Shared Projects

This board is untested. When it arrives and gets tested (and maybe when someone reminds me), I’ll replace this message.

power distribution board version 2.

For using Teensy 4.1’s Ethernet

1   Ethernet Magjack            Cetus J1B1211CCD, Digikey 1278-1052-ND
1   Capacitor, 0.1uF         Vishay K104K15X7RF5TL2, Digikey BC1084CT-ND
2   Header, 3x2, 2mm pitch      Digikey 1849-1000-ND
2   Socket, 3x2, 2mm pitch      Amphenol FCI 89361-706LF, Digikey 609-3139-ND
1   Ribbon Cable, 120mm      Digikey HF06S-5-ND

This board and the required parts are also available as a kit from PJRC (but with a green PCB - not glorious OSH Park purple of DIY builds)

https://www.pjrc.com/store/ethernet_kit.html

Takes a gate (10v-15v) and converts it to a Buchla-style pulse with a transient of the input voltage followed by a sustain with a voltage set by RV1.

TSL1401R-LF breakout board, narrow

https://drive.google.com/file/d/1OSwQ6lUrDPc83HERk8sExm0cPPtqaNjS/view?usp=sharing

psu to XT60 Adapter

Originally designed by Cherie-Kim Modified to include pads for 0603 SMD Resistor

V-USB breadboard ready PCB

Resamples 3-wire serial digital audio to 48, 96, or 192 kHz and outputs S/PDIF over coaxial and/or optical. It enables S/PDIF output for consoles and arcade boards that don’t produce a standard sample rate (e.g. Nintendo 64, Neo Geo MV1C, etc.).

A full description of the project is here: https://shmups.system11.org/viewtopic.php?f=6&t=66767.

4-Digit Display board for Power Designs PD6050D with Volt and Current indicators (2 of 2)

4-Digit DPM for PD6050D with Volt and Current indicators with display (1 of 2). Absolutely no modifications are required for this upgrade. This project uses the existing 15 pin edge connector and DPM housing bezel that the old DPM fits to in the power supply. The voltage resolution is increased to 10mV and the current resolution increased to 1mA. Due to the limits of the module case size, the “E” and “I” indicator 7-segment display position is used for the 4-digit resolution and therefore separate bar type LEDs are used to indicate “Volts” or “Current” just below the segment displays via the front panel switch.

Low distortion Wien Bridge Oscillator - High Performance Version. Selected values for 400 Hz frequency output at 26 volts peak to peak. C1, C2 are precision film capacitors for low drift and distortion. IC1 is an OPA1612 ultra-low noise and distortion audio op-amp. VR4 is an external 10K potentiometer for adjusting output level. R2, R3 are for adjusting series and parallel bridge frequency circuits. R1 adjusts the negative feedback of the oscillator. L1, L2 are 14 volt incandescent bulbs used in the negative feedback circuit. Changed resistors to 1206 low noise type, capacitors changed to 1812 size to accommodate 0.22uF film. Revision 1.2

LK201 keyboard emulator, for USB keyboard For software, documentation, and design files, see Github

Hewlett Packard 3456A Digital Voltmeter C5 Capacitor Adapter for A10 Board. Replaces the 4,000 uF @ 15 volts capacitor with 4,800 uF @ 25 volts, using 4 1,200 uF capacitors. Impedance 4.25 mOhms. Replaced obsolete Sprague 5 pin unit. Revision 1.1 https://www.barbouri.com/2020/06/24/hewlett-packard-3456a-digital-voltmeter/

HP 3456A C5 capacitor adapter Rev 1.1

Push Button On/Off Controller PMIC based on Attiny10 with integrated LDO