Stephen's finally upgrades his toolkit to include a Digital Logic Analyzer and Parker repairs a Tigershark. Don't worry it's not a real shark.
The Useless Machine contest has just closed. Thank you Mouser for sponsoring our contest and our judges! The Podcast Favorite gets chosen!
Parker gets test results from his APA-102C experiments and Stephen wraps up REV2 of the MacroAmp!
MacroFab Design Contest: Useless Machine Sponsored by Mouser Electronics
R.F.O.
Arm gives up control of IP to China
Squirrels and Security — It’s a Thing!
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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!
Are you a web that needs PCB assembly? Look no further than macro fab. We've got you covered whether you need a single prototype or high volume manufacturing, including system integration. Macro fab is your solution. Use our easy online interface to upload your files. Get a quote in minutes and order your PCB assembly without speaking to anyone. A few days later, your high quality PCBs will arrive in the mail, visit macro fab.com today and sign up to get started. Hello, and welcome to the macro fed engineering podcast. We are your hosts, Steven Craig and Parker, Dolman. This is episode 175.
So we have a really big announcement this week. We have a time coming. What was that? long time coming? Oh, yeah. And we kind of alluded to it a couple of weeks ago as well at the end of the podcast, but we have a new design contest.
The second big official design contest. We've had some others in
the Yes. So this is the Mac fed design contest Useless Machine sponsored by Mouser. Electronics. Yay. Thank
you. Mauser. Yes.
So Mouser is sponsoring all the prize money. So thank you so much Mauser for enabling us to do this.
Yeah. And and also, thank you so much for getting on board with a contest. That's useless. Yes, exactly. They've been, they've been super kind to us, to allow us to do this. And they were way on board. They're like, Yeah, let's do a contest together. Sweet. Let's do it.
Yeah. So some, I guess some examples of like, projects that are useless. So Stephen, and I basically spent like an entire like, you evening, like drinking and coming up with some useless ideas. And so these were like the top four? Oh, yeah. So I think we should just read off each other.
Yeah, yeah, for sure. So
the first one is a device that sends tweets of the temperature of Mars for tourists.
If you ever want to know the temperature of Mars, at any point in time, you can have
it you have to know how to dress in the morning. Right, exactly. You have to know if it's if it's sandals weather, or like, you know, astronaut boot weather.
Right? Or if it's gonna be like, Total Recall, weather, you know,
popping out your head.
Big sand storms and stuff. Yeah. Yeah. All right. So another example of a completely useless device is a clock that isn't even right twice a day.
I was thinking about that one is like, you would set the time. And so it would randomly generate a time and then make sure it wasn't the real time.
Right? And then maintain the wrong time. Yes, constantly. Yeah. But you know what actually come to think about it. So some some laziness that maybe you've experienced this also. But at one point in time, my the clock in my truck was off by like five minutes. And I just left it there for a while. And I just knew it was off by five minutes. And I just corrected it in my head. And I eventually changed it. But it was one of those things where I just knew like, oh, add five minutes the time like my clock, this clock would need to be able to drift. But never drift. Correct. You know, so you couldn't ever predict it to like it. It actively tries to be wrong.
Yeah. Even better would be if it could sense if people were near. And so it would look like it was keeping the correct time. But the moment someone was gone, it would just randomly change through different like time. Oh, yeah. It's not like you can stare at it and says like, 330 and then you stare at it. And then it says like, 524. So it knew people were in the room, it would start at like a wrong time and just increment for a while. Yeah, but then when detected someone wasn't there. It would just change. Yeah, so you can never figure out what the offset is.
Nice. Yeah. Right. Yeah. You never be able to predict it. Yeah. Also, if it were to detect if you ever crossed a timezone, it could then pick a completely random other timezone and just start from there. Yeah,
like a timezone on Mars.
Right, right. Mars does have time zones, doesn't it? Probably. Yeah. Well, actually, I think they use what the there's some phrase for it for like, the global standardized time or, or I don't remember like NASA uses one. That was you know, that was a big that was a big engineering challenge. Like when we send the guys to the moon like how do they tell time kind
of stuff? No, so much HOURS does not have time zones. Right? Because it because it's all on one. Yeah, I guess if you don't have humans that need to wake up and go to sleep, you don't really need time zones.
Right? How long is the day on Mars?
I don't know. What like a standard Earth Day. Are you talking about a rotation of Mars? A rotation
you'd like for the sun to come up in the sun to go down? How long is it says
one day in 37 minutes. So it's actually really close to Earth.
Yeah. Cool. All right, what's another? What's another Useless Machine example? So
a GPS that tells you where the furthest bathroom is?
Yeah, like the other side of the Earth.
I mean, we got this idea from that GPS that told you where the nearest cheeseburger was. That was actually kind of useful. Yeah, this though. Yeah.
The furthest away bet. Yes, at all times. It could it could figure out exactly where the farthest away. I love that. Yeah, that's fantastic. All right. So here's here's one, another one. Remember that kid kids toy that was like a plastic circle and you'd pull it a little handle on the side and the little arrow would spin around it and land on an animal and I'd say the cow says, moo or whatever, have have that exact same thing. But all the sounds are wrong. Just absolutely wrong. In fact, haven't we're all the sounds are not even animal sounds. They're like, it lands on a cow. And it's like a jackhammers
checking cars, car tires squeak.
Right, great.
I love that. Yeah. So that's kind of like the things we're looking for, for people to build in this contest.
Hang on. I'm gonna I'm gonna pause you there. Earlier today, I actually came up with a couple more that I wanted to share with you. So Parker, I heard these ones. So I put a little thought into it. And this, this is a project that, in my opinion, is infinitely useful, but also infinitely useless at the same time, so a perpetual motion machine that just has enough energy to power itself. So like a solar panel and a light bulb that's on like a continuous feedback loop.
So you have like a superconducting circuit,
you have 100% efficient circuit. It's amazing. It can't happen. But if somebody were to actually invent it would be, we'd have to rethink all of physics. And it would be useful in that sense. But in terms of just a light bulb that powers itself through a solar panel, it doesn't do anything. It's completely useless. Right? Yeah. So the most useful, because we'd prove that we could do that, but also the most useless thing. So here's another one, a device that tells you if you're in space or not, like all the time, it just says yes or no, you're in space or not. And then the last one is a light activated light bulb. So it only comes on when it's light. When it senses light.
I've had Okay, so on that one, I've actually had those, like those light sensitive fixtures. Yeah, right. Except that I had a I had, it was like a module that you can just like put on the wall, when you wired it into a fixture. So I had it sitting below the light, where the light would come on. If it since it was too dark out, it would turn on, and then it would shut itself off. Because everything got bright again. Just cycle and be like it was just oscillate. Yeah, would oscillate about every five minutes, it would turn it off and on.
I guess you don't I guess professional products can end up being useless devices.
Yes, if you don't use them correctly.
Okay, so the idea behind this, this whole contest is for you to design you being anyone to design a useless device and show it to us. And we have four prizes that you can win. So first, we'll let's go ahead and say it's broken up into two kind of categories here. So one category, just like our last contest we did is going to be judged by four guest judges who we will be announcing over the next couple of weeks. So, those guest judges will judge all of the entries and they will apply first, second and third place. So first place will win $1,000 Second place wins 500 and third place gets $250. So then, just like the last contest, there is a second category which is called the mech fab engineering podcast favorite, which basically Parker and I get to pick one lucky winner and you will win $1,000 And mainly that's if you listen to the last contest, just if we thought It was funny. That's basically Yes. Cut out like it's big. I mean, if it's interesting, I mean, there's a lot that goes into it. But yeah, we'll announce you on the podcast. And on top of the $1,000 cash prize, what do they win burger?
They'll also get a useless trophy that Stephen and I have designed. Yeah, so we didn't built,
right we are we? Well, we've already begun designing it. We started a while ago, actually. But we're actually going to build a pretty nice, yet useless trophy. And you will, in addition to the $1,000, you will get the useless trophies empty.
And so in the useless trophies, actually the example project that's in the blog posts, so if you go and click the hackey.io, like example project, you can see our progress on it. There's not a lot of progress there yet. But we are collecting parts and stuff at the moment to further get down the road or the design.
Right. Yeah. So we're actually yeah, we're putting some real effort into this. So there's mechanical design that goes into this, we're getting boards made. It is actually usable, there will be things inside of it. And the goal is to actually make it look nice, but yes,
useless, but useless. Cool. And then, so the, how can people enter Stephen?
Okay, so three things that we need you to do to enter this progress project. Sorry, not project contest. First, you have to build an electronic project that is useless. Now useless is kind of in the eye of the beholder. That is up to you, you get to decide what that means. We gave you some examples. And those were all things that probably fit maybe a little bit more into the portrait, Steven podcasts favorite because we think they're funny. Yes. But but those are, those are examples of a useless project. It I guess it has to do something right. It can't just be a paperweight. But it has to be useless.
Well, paperweights are useful. Oh, good points.
So yeah, number one, build an electronic project that is useless. Number two, document it as a new project on hackaday.io. If you haven't been there yet, go to hackaday.io. Look at other people's projects, kind of get a feel for how projects are done there, create an account, and then you will have to upload your designs and everything to hackaday.io. That's where our judges are going to see all of the projects. That's where Parker and I will see all the projects, if you don't do that, we can't judge your project. Correct. And then number three, we we need you to tag your project with the phrase macro fab design contest, Useless Machine.
So that way, we can basically go to the ginormous lists, that is the Hackaday IO project list. And we can just click our tag and we will get all your projects.
And last time, we got a lot of entries. And it was fantastic. It was awesome. Hopefully this time we get a lot more than that. Yes. Yeah. So let's let's, let's remind one more time, build an electronic project that's useless, document it on hackaday.io and tag it with macro fab design contest, Useless Machine.
And so some of the contest rules is the contest runs from 8am, central time, June 1, which is was last Saturday, at the time of the recording of this podcast, and then it runs through 8am Central August 10. Of this year, projects must be documented submitted through the hackaday.io source code schematics and board layouts. The project must be posted in the file section or in a public repository such as GitHub, so that, you know judges can look at it. People should be able to replicate the project. Like there shouldn't be enough information about your project that people can make sure it's legit.
Right? Yeah, not not just not just a 3d render and say this is it
or like a CG thing. Right? Yes. All entries will be judged by judges appointed by McWrap. Those judges will be announced over the next couple of weeks. And then macro fab Mouser. Electronics and judges or family of any of the proceedings are not eligible to take part of the contest. So sorry, Steven, you will not be able to we can't enter our trophy into the contest.
I've made plenty of useless machines. I don't need to make more.
And there's also no age limit for the contest. Right?
So come up with your ideas, throw them up on Hackaday data.io and document them as best as you can. We do recommend well maybe not recommend but taking videos of your thing working. Those are always big thumbs up just because it is It gives us a little bit more of a description. We don't have to read as much. But yeah, this will be a ton of fun. So Parker, how are the judges going to rate the contestants projects?
And so the first the big one is like, how interesting is the entry? How well is the project documented? Are there description, details, instructions? Components? Is there a build instruction set up for it? Does it does the useless thing actually work? And so based off all those things like and how much of the contests as topic is in the project, that makes sense? Like, how useless is it?
It's not like, we need a useless scale.
Yeah, useless scale. So judges will pick their top three projects and rank them from one to three. So the top, their top project gets three points, there's second place project gets two points. And the third place project gets one point. And so we basically combine all their top three projects. And then whoever gets the most points gets one, two, and three. And then the macro engineering podcast favorite gets chosen by Stephen and I usually do it. So last year, we did live on the podcast as well. Like, we both got our favorite lists, and then we compared them on the podcast and which ones we liked the most. And then got a winner. Yeah. And actually,
it was it was cool. Last year, I think our lists were fairly similar. And we each had come to the conclusion for the number one pick that it was like, guaranteed like that one. Correct. We just agreed right away. That was fun. Yeah. Okay. Yeah. So number of points scored from the judges. And I don't think that this has given away any secret sauce. But we do have a a nice variety of of judges. So it's not going to be like one mindset, you're going to have a really interesting scope of all the judges. Yes. And
I think it's gonna be a lot of fun announcing all the judges as well.
Yeah. And we'll be announcing that on Twitter. And we'll probably well, not probably, we're for sure. going to be talking about here on the podcast. Yes. For sure. So let's see here. Let's go. That was June 1 to August 10. through August 10. is the last day that you can enter in. So that's plenty of time to come up with something crappy and take a video of it. Yes. Yeah. And then, yeah, if you want to make it look really professional, or if you want to do it by hand or whatever, that's entirely up to you.
Correct. So do you want to go on to the RFO section?
Yeah, I think we talked about this contest,
or the rapid fire opinion.
We need to say that every week now I think so too. Yeah. We've we've had longtime listeners be like oh, that's fine. Yeah. All right. What do we got?
So the first one is arm gives up control of IP that China so this is off the like arm was having to pull their their license agreements with who a and, and so basically Softbank who owns arm gave, I guess 51% of the shares of arm China to the Chinese government? I think it's the Chinese government.
That's probably where it ends up. Right? Yeah, it's
probably where it ends up.
Yeah. So what what all? I mean, what does that even mean? For?
I think all that means is, like, its shares of the company. So they, they're on the board. And I guess that means they have access to all the, the IP now. Interesting. There's not a ton of information about this. I couldn't really find too much.
You know, this might be click Beatty, but I was reading some articles earlier about predictions, that processor and semiconductor sales are going to kind of be in a slog for the next 10 years or so. Well, I think that's a little bit due to global politics and what certain nations are doing to other nations right now. Interesting, though, because is, is are the Chinese manufacturing a lot of arm products? I mean, I might be showing some ignorance here. I guess they are right.
I mean, yeah, arms, arms. IP isn't a lot of different microcontrollers, which run you know, practically almost every single product out there.
Yeah, yeah, sure, but I thought a lot of that was manufactured outside of China, but I guess they're just holding interest, right?
Well, no, they make a lot of semiconductor. So cool. Yep. The next one is a topic we always like to talk about, because they're always great, because always great is the major make. Google had a major service outage this week, which caused basically the whole Google Cloud back end, any service that was using the Google Cloud back end, just stopped working. And so this caused YouTube Gmail and Oh, my God, Snapchat, the fail working. I actually noticed that Google Chat like the Hangouts chat, it worked, but you couldn't upload pictures. So the, the chat part was still working, but not the uploading picture part. And so this actually caused the nest, like ecosystem to go down. And so people were without controlling their air conditioner, or opening up their doors while this was down,
right, because they have like, the IoT locks on their doors and stuff. smart locks. Remember smart locks? Yeah, right. Right. That's
smart locks,
smart, smart locks that shut off, right?
Yeah. The moment they can't talk to the mothership. And
so is the price that nest doesn't have like, offline mode, right? Like,
don't you think that sounds necessary? But then you'd have to carry a key with you? Well,
I mean, for your for your AC, but then again, I guess, you know, that's, that'd be very necessary.
I think there is a manual mode, but the whole point of the Nestle's that handles it for you. So
you know, I've got a My house was built in 96. And I think I have the original thermostat in there. And there's one thing that just books, the living snot out of me, at this time of the year, the will in Denver, the temperature fluctuates a lot. It could be 80 today, and it could be 35. Tomorrow, my thermostat doesn't have the ability to switch itself from heat to cold. You have to you have to tell it, you're in heat mode or cold mode. You don't it can't flip between those. So there will be times where it like it was warm in the afternoon. So I've got the AC on. And then it drops like crazy at night. And I wake up and it's 58 in my house because my house decided not to heat up. Yeah. How hard would it be for it to just like have a setpoint? And flip around that? setpoint? I don't know like That sounds really are correct.
There's a lot of old thermostats are set up that way. And I wonder why.
Oh, it's super annoying.
You got to think is the solution to that problem. Stephen is doesn't need to involve the Internet
didn't cross my mind for one second. The other day, I was like, Maybe I should go buy a nest. Because I lived in a house previously that had a nest in it. And they were great. It was fantastic. I loved it. And but you're right, I don't need to go spend $250 and retrofit my thing for it to be able to switch from heat to cold
get an Arduino a temperature sensor and then throw it on your wall with some sticky tape.
Get No here's even better get an Arduino to control a servo that flips the switch from hot to cold.
That's actually really funny. I like that.
Actually, you know what? As of right now, I should go as an alias and enter my thermostat into the Useless Machine Contest because it's not doing what it needs to.
That's great. Okay, so the last RFO for the night. Squirrels and security, it's a thing. And the quotes on this thing is amazing, like the subheading is they're cute, they're fuzzy and they pose a major threat to our cyber infrastructure.
So what's it What's this all about?
So this is basically squirrels chewing on power lines and on on cable lines causing outages of services. And squirrels are the number one threat to electronic wires out there
they are squirrels are two times as large as the next threat on the list.
Yes. It's, it's like people always worry about being hacked or stuff like that. It's like no squirrel squirrel is going to get you.
Actually, you know, it's funny this list. Okay, well, let me let me back up just a second. There's There's a website called Cyber squirrel one.com And that's the numeral one and apparently This is like a this is a website that shows every outage in the world or every one that is known to be due to, I guess a living thing. Animals. Yeah, well, but the list at the very bottom has humans. So apparently, three of these are due to humans somehow ticking down the lines.
I like how it says it has an asterix to but doesn't explain what that asterisks is.
asters we're not really sure if they're human or
aliens man
but oh wait, no, no, they got a thing over here. All of the claim nation states cyber attack. Okay, I'm not going to read that on the whatever it says it says three or for some reason they call it an agent three agent humans have successfully taken down three power grids. So I love this I've been kind of scrolling around this map and looking at different animals taking out stuff. So in India apparently there was an elephant that took out a power line. Oh, hopefully he's okay. Also, there's there's some monkeys who have done that apparently 12 of them.
That's the is this one I clicked in in Kenya. A nation wide blackout caused by it just says rogue monkey like riser descriptor there
apparently in Japan there's a there's a city called metsu a Ma Te SUV I don't know how to pronounce that. But maybe I got it right. Where? Let me click on it. Update jelly fit jellyfish back off at Japan National Nuclear Power Plant. Okay, so somehow a jellyfish took out a nuke
so apparently in in Sri Lanka, a squirrel shooter cable that killed three soldiers. What? Yes, a a electrical cable fell on a van. And all three of them jumped out and fell on electric cable and electrocuted them.
Oh, gosh. Actually in that one would it be best to just stay in the van?
I guess so.
I don't know. Yeah.
And then there's like there's outages in Hawaii, which was this one. A mongoose took out some it says a mongoose was loose power went out.
I wondered like I guess did they hand right? I mean, does is there somebody who enters a hole of leads into a database.
So it pulls and looks like it's pulling news articles about power outages and it pulls like the I think someone probably manually goes in and puts the animal in. But like the title a mongoose was loose. That's the title of the art that article.
Oh, okay, I got it. Yeah. Cuz there's somebody just having fun. Oh, yeah. So I got a story about this. That's that's kind of funny. I may have told this on the podcast before. So if anyone remembers, let me know. And I'll never tell the story again. But I had a internship at a power company in North Texas during my college years. And one of the projects I had to deal with was a one of the presidents of my department, he delivered an Excel spreadsheet that had over 200,000 lines on it. And every single one of them was power outages throughout their entire power grid. And he said he wanted me to do statistics on it and figure out if I can find anything that was significant in the data, and I spent two weeks looking at this Excel data sheet, just try it. I'm not datasheet sorry, spreadsheet trying to find something. And there was so much information in it. I mean, not only just like time and location and things like that, but like there was written descriptions of each thing in this this huge spreadsheet. And what I found what was interesting is if you took the data and you plotted like the locations of everything, and then you look up the migration patterns of squirrels, everything lined up perfectly. And on top of that, if you looked up, if you looked up weather patterns and lightning strikes, it also lined up nicely. So we ended up creating effectively an algorithm that could loosely tell was it a lightning bolt or was it a squirrel? And we found out that squirrels were the biggest threat to the power company out of anything.
Yeah, the one of the houses I used to live at the Internet was like spotty. And I had, I had like four different technicians come out and like they would test everything. Check all the wiring. Everything was good, right. And eventually I found that it was when it got a little windy, the cable would sway on the line, right? Yeah. And so I've got the tech over. And he was testing it, and he did not believe me that the wind would cause it to fail. And so while he was doing that, I went outside and poke the cable. It's not electrical cable guys. It's, it's a just a coax cable data. Yeah. And I poked it, and I caused the Internet to drop out. And so the guy finally believed me. But he wasn't the technician that could climb the pole to fix it, because he had to run a whole new line. So of course, the next day guy comes out, he pulls it down. A squirrel had chewed off, like three feet of the outside of this cable. But it still managed to somewhat function is amazing. That's great. Yeah. This is one of my favorite projects I've seen in a long time. The Cyber squirrel one.
Where do you find this article? That was what E web.
This one was on E Web. Yeah. But the the cyberscoop one is they listed as this map lists all unclassified cyber school operations that have been released to the public. It's like the squirrels are against us.
You know, I might be making a giant mistake here. But why is it cyber squirrel? one.com? In other words, what is cyber squirrel? I might I might be visiting something I shouldn't here.
Well, here's the Twitter account is cyber squirrel, but the mentioned is cyber school one. So I wonder if there's a cyber squirrel?
Cyber squirrel.com. Let's see here.
Hmm. Okay. So I bet you have someone.
It redirects you to technology dot find law.com. For legal professionals. Yeah. Cyber squirrel is, yeah, it's must be parked.
And cyber squirrel. The Twitter account was created April 2009. And Edie only has six tweets and says this count is protected. So someone has an unlock. So I bet you when the real cyber squirrel came on the scene in March 2013, he couldn't get it without a one. Right? That's like the I think we've talked about this before. But like, basically, in the future. If you find like someone with a username that doesn't have numbers on it. It's like, yeah, they're like the OG.
Yeah. And well, yeah. I mean, our parents, our parents are going to swear, parents are going to start passing their user names down to their children if they don't have numbers, right? Yes. Like it's gonna be in their will. You can have my user name, Viper,
Viper, Viper 42. What was it when we were talking to Joe grande about his like online handles? Oh, yeah. Yet like,
what was it? He had some odd names? Yeah. Cuz he was back in like listserv days, right? That sounds correct. Yeah, yeah. Yeah.
Let me see if we have his because his current one is king pin. Right, right.
I'm sure one of his original was CIA has all of his. All of his usernames. Yeah, his original one was black ninja. Yeah. FBI agent didn't he come up with that name when he was like 14 or
something like that. Then FBI agent, Astros zombie and the youth that's great. That's great. Yeah.
Well, shoot. Where are we? Are we are we going pretty quick on this? Yeah, I
think the good little short podcast is I mean, we've had some monster podcast recently. Yeah, we really have and before I forget June 7, high noon Texas standard time hashtag badge life
Cool. All right. That was the macrophage engineering blog guests. We're your hosts Stephen Craig and Parker
Dolman.
Take it easy later everyone.
Thank you. Yes, you our listener for downloading our show. If you have a cool idea, project or topic. Let Stephen and I know Tweet us at macro fab at Longhorn engineer or at analog E and G or email us at podcasts@macro.com. Also, check out our Slack channel. at all if you're not subscribed to the podcast yet click that subscribe button that way you get the list of episode right when it releases and please review us wherever you listen as it helps us show stay visible and helps new listeners find us
Stephen's finally upgrades his toolkit to include a Digital Logic Analyzer and Parker repairs a Tigershark. Don't worry it's not a real shark.
The Useless Machine contest has just closed. Thank you Mouser for sponsoring our contest and our judges! The Podcast Favorite gets chosen!
Parker gets test results from his APA-102C experiments and Stephen wraps up REV2 of the MacroAmp!