Podcast Notes
Parker
- PinoTaur Update
- 12V master voltage input
- Switching psus for the voltage rails
- ATSAMD21G18A Breakout Board
- 32.768KHZ is the external crystal?
- Lead free Smart LEDS?!
- Direct from APA Electronic
- APA-102C-5050 256
- APA-104-260-5050
Stephen
- Macroamp Update
- Tested preamp board
- ~42x gain which is much too high
- Power supply resistance is way too high at 2k
- Did not account for extra current draw from buffer Jfets
- J111 Jfet was bad out of the box – Have replaced with a BJT
- So far very low noise
- Riaa input filter still to be tested however it all works
- Tested preamp board
- Tested Shielded cable footprint from MEP EP 155: Void Copper Donuts
- Was a Success!
R.F.O.
- Hack my House: UL Certification and Turning the lights on with an ESP8266
- What is the legality of IOT and connecting them to Mains?
- Component Shelf Life: How To Use All That Old Junk
- How to know when your parts are bad?
- How old is too old?
- Surplus Stores
- EU bans lead solder for real this time
- Lead has been newly classified by the EU as toxic to reproduction as of March 201
- This means it can no longer be sold to the general public, only to commercial users
- The transitional period ended Feb 28, 2019
Visit our Public Slack Channel and join the conversation in between episodes!
Schematic for the ATSAMD21G18A breakout board.
PCB layout for the ATSAMD21G18A breakout board. USB Type-C!
Stephen’s copper donut for soldering COAX cable to PCBs.
Inside the amplifier Stephen rebuilt recently. Mike Ikes for resistors and capacitors!
Stephen’s amplifier put together and working. Here Stephen is recording the output with a microphone.
Special thanks to whixr over at Tymkrs for the intro and outro!