Parker's pinball controller has gone gold! Revision 3 is being fabricated! Stephen then explores the softness factor of diodes and the SSPS returns?
Parker discusses his latest project. An electronic device to ensure his pet cat does not become a chonker. A lawd its processing!
Stephen learns to read erased IC part numbers, buys an Amazon Resistor Kits, and discusses Analog Comparators while Parker unbends tubing to bend it.
Figure 1: Overview of the Resistor Resistor PCB.
Figure 2: Close up of the 0201 resistor grid!
Figure 3: PinHeck REV7 with a Raspberry Pi Compute Module grafted onto it.
Figure 4: Stephen’s TriTrix Speakers “finished”.
Parker is an Electrical Engineer with backgrounds in Embedded System Design and Digital Signal Processing. He got his start in 2005 by hacking Nintendo consoles into portable gaming units. The following year he designed and produced an Atari 2600 video mod to allow the Atari to display a crisp, RF fuzz free picture on newer TVs. Over a thousand Atari video mods where produced by Parker from 2006 to 2011 and the mod is still made by other enthusiasts in the Atari community.
In 2006, Parker enrolled at The University of Texas at Austin as a Petroleum Engineer. After realizing electronics was his passion he switched majors in 2007 to Electrical and Computer Engineering. Following his previous background in making the Atari 2600 video mod, Parker decided to take more board layout classes and circuit design classes. Other areas of study include robotics, microcontroller theory and design, FPGA development with VHDL and Verilog, and image and signal processing with DSPs. In 2010, Parker won a Ti sponsored Launchpad programming and design contest that was held by the IEEE CS chapter at the University. Parker graduated with a BS in Electrical and Computer Engineering in the Spring of 2012.
In the Summer of 2012, Parker was hired on as an Electrical Engineer at Dynamic Perception to design and prototype new electronic products. Here, Parker learned about full product development cycles and honed his board layout skills. Seeing the difficulties in managing operations and FCC/CE compliance testing, Parker thought there had to be a better way for small electronic companies to get their product out in customer's hands.
Parker also runs the blog, longhornengineer.com, where he posts his personal projects, technical guides, and appnotes about board layout design and components.
Stephen Kraig began his electronics career by building musical oriented circuits in 2003. Stephen is an avid guitar player and, in his down time, manufactures audio electronics including guitar amplifiers, pedals, and pro audio gear. Stephen graduated with a BS in Electrical Engineering from Texas A&M University.
Special thanks to whixr over at Tymkrs for the intro and outro!
Welcome to the macro fab engineering podcast. We are your hosts, Parker Nolan
and Steven Craig. And this is episode 84.
So if you didn't hear last week, that hurricane kind of fuck shit up here in Houston.
It's a good way of putting it. Yeah.
So we're actually recording here at macro fab on our Yeti mic, USB mic.
Right? So Josh's studio, unfortunately, he did get flooded. And by flooded, we're talking five feet of water and turned into a pool. Yeah. To be honest, he was in a lower grade basement, which basements don't exist in Houston, it's sort of for this reason. And a series of events caused it to kind of be a little bit underwater, so his equipment is safe, but he doesn't really have a location at the moment. So we are recording at macro fab. And we will be getting better solutions coming up here soon. So hang in with us.
Yep. And because this is kind of a unique situation with the recording and stuff, we're going to do a special episode. Yeah, something unique. Yeah. Um, basically no art, we're
gonna talk for an hour. No,
no, no, we're not gonna do an arco or pow this week, right? I'm basically going to talk about projects that we've been working on
for a very long
time. So this is kind of like a status update or State of the Union on these projects that we have mentioned on the show and kind of either forgotten about or haven't done anything with for a long time,
will and and just to let everyone know, there's been many of you who have written in to the podcast asking about particular projects, and most of them go, hey, whatever happened to this? Are you guys ever gonna finish this or blah, blah, blah. I just want to make sure that everyone knows we certainly hear you and we're going to give you an update on all of those cool things that we were doing.
Yeah. So I'll start first. Okay. The pin HEC which is the Pinball Controller that I do for spooky pinball. Yep. I think when I last left off, we were talking about the red eight end of the line edition. And that was Stephens computer's going blue? Because he got notification
on the fly recording.
So yeah, we're working on the end of the line edition, which is basically the last of the next. Whatever we come up with next will basically want to wipe the slate clean start over and come up with a new name like Minotaur or something cool like that. Oh, well, I think that names it sounds like you have already. Yeah. I really like that name because it's kind of goofy. And it fits. It fits
how this sounds cool. That's the only requirement for it fitting is.
So I started basically made that that Raspberry Pi three compute module board. And that all works. And Steven still doesn't hasn't give me a beer yet for Hey, I
gave you a six pack Azima know,
our guest gave me Azima and seamos not beer. They gave me the beer and then I gave it to you. But that's not beer. It's a malt liquor beverage.
Okay, okay. I'll
get something brewing some of your homebrew be fine with that. Yeah, I
actually have to homebrew now. Because we kind of ran out during the hurricane.
Oh, yeah, actually speaking that like so I have the generator running keeping the fridge cold. Yeah, that's like the only thing that fridge could could happen. So during the night, I had the freezer running in the frigerator that's inside the house. And then during the day, I had the my firmer tater cooling the beer down. Oh, nice. Yeah. So that was like I was trading off with the generator power. Oh, that's uh,
that beer has got to be done fermenting. It's called crashing now. Nice. So another week or
so. This Sunday, I will transfer into the keg. And then you got another week of Yeah, I usually do about three weeks of fermenting. And then I do a week cold crash. And then I do a week in the keg, usually as conditioning or dry hopping, and then I put sugar in it and condition it for two weeks.
Oh, you let it sit in the keg without priming sugar. Yes.
Well, depends. It depends. All depends on the beer. Yeah, if I dry hop I don't put sugar in it. Gotcha. But if I don't dry up then I go and put the sugar in your at your I don't just let sit there doing nothing. Ah, yeah, age, age makes all beer tastes good.
That's true. To a degree too. And then again, then it gets really really bad. Yeah,
really bad. Anyways, FinTech Yeah, I got the Raspberry Pi three compute module that all worked great.
We can you call it the pin guitar. Pretty good.
What would the animal look like? Like, would it be like a pinball machine on top of a human body? Well, that
would be like a pyramid head from exactly. Silent. Yeah. The Pignataro
you got to use that. Yeah, that's gotta be it. Okay. We got to come up with some logo for it then. If you draw anything that looks like a pen or guitar and then email it in at podcast at macro calm, and you're in the United States, we'll send you some swag. Yeah, send yours. And as you actually draw something will actually send you a t shirt. And we'll post it on Instagram. Yeah, I will post on Instagram and Twitter and Facebook.
So whatever your in your idea of what the pin ATAR is, yes.
What kind of animal is that? Oh, that is mythical creature. Okay, so the Raspberry Pi three compute module, right? And we grafted it on to the red seven board, which is what we currently use. And that all works, actually, surprisingly well how that like, it looks, I have to take a picture and put it on the podcast. No, because it's all green. It's all green, right? It's just a monstrosity of like hot glue and wires, but it all works. And so then took basically took a netlist change. And I'm applying that to the pinic board and graphing the compute module onto the current connect board, ripping off the parallax impeller and all that stuff. And we running prototypes in like two weeks. So nice. We'll have that on Twitter as well. Because that's like $1,000 I mean, it's a it's a six layer, 14 inch by six inch board that's got like, over 100 through whole and over like 200 SMT parts.
And if you throw in all the labor that you put into it, it's way more than awesome.
But yeah, it's a it's about a grand. So cool, but it's uh it's pretty nice, nice board. I like the board will probably change the color to like, matte blue or something.
I haven't seen that blue do they do they do matte blue? Hmm. I've only seen the glossy.
And because we do matte red for the current rep seven. Yep. into five, eight and line. I'll do like blue or something. Something cool. Different. Distinguish. Yeah, maybe light brown? Because no one picks that option. Is that that is an option to get brown solder mask? Yeah.
Vintage looks like old phenolic boards.
Yeah. And then the jeep. So we got the Bluetooth done all that stuff. And now I got like the paint sold on the Jeep right now I've been working on the electronics inside the jeep and and I kind of hinted with the when we were talking to John Adams, that rock satellite board. Yeah, they've been messing with, that's actually for this project. And so this way, it can beam up to the mothership and tell you where the chipset or like conditions and stuff like that. Nice. So I want to get the internal board working first because it's actually two boards. One board is inside the Jeep that basically reads all the switches, it reads the the satellite module, it reads GPS, all that good stuff, it's gonna have a lithium battery on it for backup. So that when you turn off the Jeep, it doesn't like kill every all the stuff that's doing so I'm gonna have an SD card, so you can record data. Yeah. And then there's a second board. That's the data acquisition board that goes under the hood that controls the relays and gets gathers all the information from the sensors and temperature and stuff. And then it communicate over. I haven't figured out what I want to get. I'm actually thinking about just doing USB. Okay, because it USB is twisted pair LVTs. Right. It's an all I need is Les ft 230 X chip on both ends and Bam, done. Right, right. Kind of ghetto but you know,
converted up to USB and then convert it right back down to Yes.
And just use use it will be sitting if you did Rs 45 or 232 or CAN bus you're converting up to your protocol and then back down for
a level. Yeah, anything for long distance. high noise environment noise, digital, it's
actually the distance. It's like four feet.
Let's do a little long. Yeah, you couldn't do I squared C? or SPI over four? Well maybe SPI over four feet
that may hands on the voltage level and yeah, speed. If you did like a five volt swing, you probably could get away with it. Yeah, but like a 3.3 volt swing, you might get too much noise
well and a 3.3 at at a fast enough speed. You'd have to go slow, effectively. Yeah,
you'd have to go slow. But there's not a lot of data that's going it's like give me this temperature eight, you know eight number Yeah, you know and then sending the signal to relays is going to be two bytes. 16 bits. Sure it's not like is a ton of information on this bus
Share, share, share, and it doesn't need to go blinding fast. Yeah, I could do can
but but that's a it's just cost. Yeah, like ft 230. X is like, you know, 34 cents or 35 cents or something like that. Yeah. And I already know it works.
Well, and you have everything already drawn up, you can just drag and drop. Yeah. And
the good thing about that is if, let's say, the one of the modules isn't responding, I can actually over Canvas, you can't do it. But over this, you can send a reset signal over the USB both both can do that. And it will toggle it. Oh, that's nice. Yeah, it's gonna be kind of weird because I'm playing both host and master. Or host and slave. Yeah, who's on this bus? But will this should work? Yeah. My tests, they
will work. I mean, what's there to not work? It's, it's not like you're actually like interpreting anything. You're just converting it back converting it. So it should be the same on both ends with a delay. We'll see. Maybe Maybe it might not work? Maybe not.
Yeah. So that's my personal projects that I've been working on. Yep. Steve. Yeah, you finished the the synth.
I finished the synth? Yeah, it is done. And that's actually so the synth was actually, one of the things I did in there was actually similar to what I was just mentioning with your ft 230 X. One of the points of the synth was to create like a drag and drop module. So I now have USB connection to an Arduino, done in dip trace, such that if I ever need to use that, again, I can just drop that whole module. And I know what it will work. And I know I can program it. Yeah. I did the same thing. Actually, when I designed a jig a few months ago, or actually over a year ago, with a propeller. I have like a drag and drop propeller circuit that I just know where it will work. Yeah, right. So yeah, since this done, but I have that now in case I want to do anything. But since that's done, I kind of went backwards and looked at a project that's been open for a while. We talked about it multiple times on the on the podcast if the new tube amp. Yep. So Korg released new tubes, which is a new production vacuum tube, you can go listen to our podcast, which is probably three. Yeah, maybe I don't know. It was a long time ago. It was a long time ago. The funny thing is I got the project, basically to the end and then never finished it. Yeah. Either press print, the circuit board is done. The all the parts I have in a box in my bedroom. I just need an enclosure. And so I finished the synth because that was number one in my mind. So So I the new tube amp. I basically just have to assemble it now. But I didn't really have any speakers to play with it. And I talked about it a couple a handful of episodes ago, I was building these speakers called tri Trix speakers, which I bought from parts Express Parkins. Right. Yeah, parts Express. I think that's it. Yeah. To kit. So I finished those in quotes. Finished as in the function.
Yeah, you didn't do the finishing part. That's right, they are finished
but not finished. In other words, the boxes are built, but they're not painted.
They have primer, but not sanded yet.
So the the the part that takes the longest I haven't done but they I built the crossovers. I actually had Parker 3d print crossover like plates that holds all the parts. I started that all up and this last weekend, I got them installed in my living room and they are awesome. It sounds good. They sound really good. I've been doing a B tests against just my television speakers versus those and they are killer. They're absolutely killer. In fact it's kind of jarring because of how much of a difference which is not really hard to beat the TV speakers that I had but it but it's nice to have that AB test so now I have the speakers which drives my desire to have the amp that drives them yeah, that's kind of an update on what I will be doing
Yeah, so And on a side note is I don't think we've ever said this project and I actually before this podcast I was like we will not say anything about any other projects that we've never not mentioned before. Okay, that's something that makes sense maybe I maybe I'm based Yeah, do not mention new projects
basically keep this a secret guys Yeah.
But we had this idea based off the new to amp all Yeah, we wanted to do is this is like ultimate like hipster
like Oh yeah. Total way Yeah,
yeah. Is put a new Make a cell phone holder. Yeah, like another box like an otter box that's got the new that basically has a new tube tube in it. Yeah. So you plug your phone into it and then you can plug your headphones into the otter box or whatever will cause Yeah, the new two box and Though now you have a a tube powered headphone amp that is with your phone.
So you can get The purest of tone. Yeah. As your interview digital three and a half inch jack on your phone.
Yeah. Well, unless you have an
apple. Oh, yeah, right? Well, then you'd have to digitize it, broadcast it. Re turn it into analog, and then you can massage it with a two. Yeah, I wonder
if it's actually. I wonder if it's cheaper because the thing with Apple devices that plug into an Apple product like iPhone, is you have to have that special Apple part. Right, right. Yeah, but they don't make that requirement for Bluetooth. Who's they? Apple? Oh, apple, an Apple device will connect to any Bluetooth device? Yeah. Okay. It doesn't need a special Apple part to talk to a BLE. Yeah. Apple Bluetooth Low Energy able. Able. So yeah, the don't steal that apple. Yeah. So I wonder if it's cheaper to just because how inexpensive these Bluetooth modules are getting to, for an Apple device. Don't want to reconnect physically just do Bluetooth. So like, your doc that you have beside your bed or whatever, and you put your iPhone instead of connecting to the Lightning connector, and then having to talk to that expensive Apple chip. It just Bluetooth connects
that that might actually be cheap. Yeah. be cheaper. Yeah. You might have to sign fewer contracts. Yeah, sign fewer
contracts. Yeah. It might be if you say it's Apple compatible, yet have that chip. Who knows?
I bet it's there's probably so many hoops that you have to jump through. Yeah, yeah. What go back to having a jack on your phone.
Nothing. And so I was gonna put a battery in it. So the new tube is pretty thirsty. Compared to you know?
It is and it isn't. Yeah.
You put it to tubes. It's not thirsty. Oh, compared to a solid state amplifier?
It is. Yeah, it's it's in the range of a hungry op amp. Yeah, Hungry, Hungry, Hungry, Hungry. That should have been the the secret code
word. And we're just making the title of the podcast.
Even though we're not talking about
is you have to you have to make the electrons go through a vacuum barrier.
That's not hard.
But going through substrate,
that's harder. You just pull a magnetic field or any field and they just fly right across. Yeah, but that's the whole point of it. Yeah,
but the you hit the general,
oil them off. That's the hard part. Getting them to move ain't so hard. It's releasing them from the metal underneath. You got to you got to just pump a bunch of juice into it. And then whatever. It's tough, it is right. It is tough. So yeah, these tubes are a little bit hungry. And they probably won't work super well, at five volts, I think you have to, you have to bump them up to 12 volts, just to get a usable one
range. And so I was going to what was it 18 volts, they work pretty well, I can't remember.
Yeah, we played around with I think they can run up to 30.
I wonder if we should just build a you know, I was going to have some lithium cells in there. Because it's also going to act as like a battery pack that that you can use for your phone. And probably just be that's just a boost to type 24. You know, if you want to get real fancy with it, and you put a quarter inch jack on it for your head, fancy headphones.
Oh my god, she's gonna make the box. So
at that point, you're like 18 650 cells. Yeah, even thicker.
Okay, get this get real fancy with it. So you got five volts coming out of the phone, right? So you can charge a cell up to five volts. So have a charging circuit that puts all the batteries in parallel when you're charging. So you charge them all to five volts. And then as soon as you're done charging, it puts them in series, such that you
get Yeah, actually, it's, well, no cells go to five volts. Well, sure. 3.7 is nominal. Yeah. And then 4.2 is your charge state?
Sure. So set it up so that you can charge to that and then put them in series until you get 12 volts put three of them series, which is a boost circuit. Yeah, but it's it but but you lose that you lose that audio file quality if it's got all that switching noise in it. Ah, you do. I'm going to Yeah, yeah. So if you have a pure DCF that's like cream of the crop right there.
You can say it's like know how to have that same where it's like a true sine wave inverter.
Yeah, yeah. Yeah. Even though there's no way they're doing.
What have you had same jargon is like
true DC powered signal. Yeah, cuz a signal is not gonna be like T ru, where the UE has to Ooh, lots of fun stuff. Through DC through DC, you know, funnily enough in college, we I was taking power management class or I don't want to have no idea what the name was. But we were looking at inverters. And our professor was telling us about these true sine inverters. And we actually had a lab where he bought a garbage inverter that had like those buzz words. And he showed us on on a on a scope. This inverter only had three states, it had zero, it had positive voltage and negative voltage, and it just rammed in between all of those in at 60 hertz. So so it was a square wave at 60 Hertz. It was, well, yeah, it was basically a square wave that had a little bit of an offset. So it just sort of, it was like a PWM. And it relied on whatever, you plugged into it to filter it out. So if you put your laptop on that, whatever caps you have on the front, oh, I hope they smooth it out. But he paid like 20 bucks, but the thing is like no, don't trust these, you know, don't trust in burn.
So you had a high impedance input. You could see that. Yeah, gotcha. Yeah, it was some I'm seeing some inverters that the pricey ones, because I've been looking at like a 2000 watt inverter to put into the jeep. Yeah. And you can get some, quote, true sine wave unquote, ones that actually put out a pretty good sine wave.
Yeah, you know, I mean, whatever the resolution is, if it's, if it's two bits, you get a good resolution there. So be wary, because those can really mess up your day.
So speaking of true sine waves, yeah. SSPs, the super simple power supply.
So this was talked about on episode 112. So we introduced the SSPs. We are now on Episode 83, or 8484. And we're talking about the same project. So we have
the basic concept is in on boards, it's in PCBs, and it's been tested. Oh, it
works. Yeah, it flat out does where we have most
of the stuff sitting over there on that bench collecting dust. Yeah. And it weighs
like 90 pounds. That's generous.
Yeah, that's like 140 pounds transformed.
The transformers are monstrous.
So with the completion of the sin, yep. And when, when Steven gets the speakers and the do tube amp done, we're gonna actually start working on that.
Yeah. Yeah, we kind of talked about it the other day, we were just like, yeah, we need the real it's not that far away. No, it's not. The biggest hurdle right now is not actually getting it to output a voltage. We've done that and it outputs. I mean, it's, it's pretty good. It's cooling it down. That's going to be the hard part. Yeah. But we have the parts to do, we just kind of need to assemble it. And really, with all the green wires that I have on the board on on the analog board, I really should do a second board spin. Yeah, we're getting on
the board spin. And we'll finish up the digital side. And then you know, I'm, I'm thinking we'll probably get done next three months.
That might be as generous as the wait.
We could reset we can try. We can increase that by 30%.
Then right? Okay. Yeah, there we go. Yeah, there we go.
And then another project would be the LED clock. Yep. I have one prototype segment done. I am ordering the rest of the segments. Probably next week. I had to finish the it's really funny. Cuz I got like, the big segment done. Yeah. Which is like
the the official segment. Yeah. The
I need to make like squares that go in between, like, the hours and minutes and seconds. Yeah. And that part I haven't got done yet. It's like the it's easier because less work. Yeah, the document yet. And then I need to make the control board. And then somehow power it.
That's gonna be your hardest part. Yeah, cuz
it needs like point seven ish amps per segments.
We're talking about those? Yes. Okay. I thought just came there's
like, 40 amps that like 1.7 volts.
I guess I just had a thought though. Could you connect each segment to a solid state relay? And PWM it just on and off for incredibly small amounts of time? You can. Yeah. And there you go. You don't have to have a power supply just running on mobile. Yeah, I mean, that's dangerous. But
I mean, we're running the LEDs without current limiting. Yeah, yeah, they could go nuts. No one what I should do is design a, what is it? 48 channel, so it's gonna be it's gonna be like a 54 channel, constant current power supply
that you'd have to burn off For the resistor size of a bench
it's making a space heater. It's been a resistor size of a bench. Oh, this is probably
the project that's been asked about the most
the resistor resistor, or the greatest resistor in the world or other names. We've called it. Yep. PCBs arrives. And we got a couple this time. Yeah, I have five PCBs over there. Yep. And they look amazing. Yes.
And they will actually fit inside of our machines, because we checked for that this test, we check to
make sure yeah. So all we're waiting on now is basically some free time on the picket
lights, because it's going to take a couple I think we said three hours, right? Yeah, it's
6000 components an hour. It actually runs faster than that. So we'll probably get like 8000 components an hour. 6000 is like normal every because
that's more like four to five hours of downtime. Yeah, continuous continuous
four hours of runtime, assuming there's no issues. Yeah. And one thing we haven't tested yet is, if the picking place can handle 40,000 Fine items. I wouldn't think it would be able to or or software crash? Well, I guess we'll have to find whether they use an eight bit number or a 16. bit number. 16 bit should be enough, right? 64,000? Something
65 535? Yeah, so 616
bit number behind?
Yeah. 16 bit. Yeah. And I bet you they're using 32 or 64? Bit 32? Yeah. Yeah. That's it's probably rare that they run into situations like this, but I bet you can handle it. Yeah. And this time, so when I first decided I chose every part as Oh, 603. Yeah. You went two sizes smaller. I went,
Oh, two, one. Oto. And this is Steven designed to an eagle. Because his choice license wasn't like a high enough tier to handle that many parts.
I have. I have the one beneath the most expensive so I can handle 2000 nets. No, not sorry, not to 2000 components. Yeah. So I can't do 44 40,000 Yeah.
So you didn't Eagle because the free version allowed him to do that? Yeah, yeah, that's right. And then I did, I did the new design. But this time, I actually did a schematic and made an Steven didn't knock this thing out in like, a day. Actually, it looks like an hour. Yeah, it was
it was just copy and paste. It was it was binary copy and paste. Do one then two, then four, then yeah.
And so I did. I did the same thing. I bind it on the schematic. Yeah. Is I did you know, copy paste that? And then I mean, next. Yeah. I didn't know Stephen didn't do that. That's eagle has a really hard time with 40,000 le resistors. And having to deal with all the nets associated with that as well, right. I had no net. Yeah. And so I actually wrote custom your P scripts to do stuff because it took so long to move stuff. I'm like, Okay, I'm just gonna write the script to do it for me. And let it run overnight. Yeah.
So I brute forced it. Yeah. And you want the the intelligent way? Yeah. Throughout
mine actually took longer to do though Mine took way less? Yeah.
The brute force way was the brute force. No netlist way was definitely the way to go on it. Well,
yeah, I mean, it most of the time, brute force isn't as elegant and doesn't take as much. And it's inherently less elegant. And it gives you a lot less. But in this situation, I think it works.
Yeah, it works way better. Yeah. So I'll put the, the code and stuff for those scripts I wrote in the, in the links
below, in case somebody else wants to run their thing. Overnight. Well, it's also
a good example of like doing maths, like arrays and stuff, because basically, it's like, it took the whole thing. And instead, and depending on the number of the resistor or the capacitor, resistor depend on none of the resistor, it would move it to a certain spot in the array. So it built the entire array up.
Right, right. You see, yours inherently just works. If there's no way it couldn't work. Mine was very reliant upon me following a very strict set of steps. If if I copied and paste incorrectly, then the numbered of the resistors would be off. So I had to do things very specifically and very
properly. Yeah, I haven't had a script that so I have one script that placed the parts on the PCB. And then I had another script that would draw the polygons. Yeah. And then at the very end, it ran you know, the rat's nest and then filled everything out. Sure. And then took like 10 minutes to process the Gerber's. Yeah. My face this is my favorite thing. And this is kind of it's really funny. Is the resulting Eagle file, Brd file was only two megabytes, okay? Because you know how they had the thing were what's called Zip bombs. It's a zip file. It's only a couple of kilobytes. But when you unzip it, it's like a runtime error. And so you get like, gigabytes of data. That's just garbage. Yeah, this is an eagle. Bob. You're right. Yeah. So when you run and make the camp file, it makes like 40 megabyte files out of a two meg file that comes to Eagle bomb, because the best thing is, you can upload it to like OSHPark. Just fine. It takes forever to do in Windows Park, actually. Oh, no, it crashed. Okay, I was. And I haven't read it on on our site, too. It bombed out eventually.
Yeah, yeah. I would think that most viewers, online viewers would would crap themselves. Yeah.
Because well, because you turn a two meg file into like 2020 meg files, or even bigger. You know,
there's a guy on the back end of OSHPark being like, what do you know, I bet you they've seen crap like that before.
Oh, yeah. And I guess another thing we should mention is, we have a Slack channel. This is kind of a weird spot in the podcast announce that though. This is
a no. Yeah. Okay. So macrophage has a Slack channel.
Yeah. So we're, we're trying to build up kind of like our community, and bring it out of the email age. That's where all our community is that now. And on Twitter as well, but try to bring like we thought about IRC. I think that's too old. Plus, I It's very
plus I like gifts
and emojis and stuff, which, which IRC doesn't really support too well, right. So we have a Slack channel, there'll be a link in the podcast description. Click it. Come join us. Laugh. Have fun. Give us questions about the map. That kind of stuff. Yeah. And so that's
what's the name of the chin? Macro. Yeah, Mac fab.slack.com. There we go. Okay.
And that was this week's Mac fat engineering podcast. We are your hosts pokitto
and Steven Greg lane, everyone. Take it easy.
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Parker discusses his latest project. An electronic device to ensure his pet cat does not become a chonker. A lawd its processing!
Parker's pinball controller has gone gold! Revision 3 is being fabricated! Stephen then explores the softness factor of diodes and the SSPS returns?
Stephen learns to read erased IC part numbers, buys an Amazon Resistor Kits, and discusses Analog Comparators while Parker unbends tubing to bend it.