Shared Projects

Please visit the MSP432 feather board GitHub repo for additional resources, parts list, and other technical resources.

GitHub: https://github.com/skerr92/msp432-feather

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.

Amiga 1200 Clockport Expander II

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

Want to Support my work? Feel free to Donate!

Amiga 1200 Clockport Expander

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

Want to Support my work? Feel free to Donate!

Github Repository

MBC30 Flashcart for 4MB roms

BOM

Changelog:

1.1:

• Rewired WE on the ROM chip to Pin 31 on the cart bus to fix an issue where it would not write to a bank.

1.2:

• Changed the PCB to fit inside Japanese Pokemon Crystal shells

• Added inverted silkscreen to the board to make it look more like the original

1.3:

• The pinout for the MBC30 listed online is wrong, thanks to Alex over at InsideGadgets for providing a fixed MBC30 pinout.

1.3.1:

• Moved C2 to make it easier to close the shell

1.4:

• Switched cart bus footprint to djedditt’s replica of an original one

• Replaced the flash chip footprint with a TSOP-40 footprint.

• Redid the ground plane by hand, it should now look much better.

• Moved the battery receptacle footprint 0.5mm to the left.

• Renamed Y1 to X1

• Removed JLCJLCJLC marking for OSHPark project.

1.4.1:

• Fixed missing trace for Ram_CS

Github Repository

MBC30 Flashcart for 4MB roms

BOM

Changelog:

1.1:

• Rewired WE on the ROM chip to Pin 31 on the cart bus to fix an issue where it would not write to a bank.

1.2:

• Changed the PCB to fit inside Japanese Pokemon Crystal shells

• Added inverted silkscreen to the board to make it look more like the original

1.3:

• The pinout for the MBC30 listed online is wrong, thanks to Alex over at InsideGadgets for providing a fixed MBC30 pinout.

1.3.1:

• Moved C2 to make it easier to close the shell

1.4:

• Switched cart bus footprint to djedditt’s replica of an original one

• Replaced the flash chip footprint with a TSOP-40 footprint.

• Redid the ground plane by hand, it should now look much better.

• Moved the battery receptacle footprint 0.5mm to the left.

• Renamed Y1 to X1

• Removed JLCJLCJLC marking for OSHPark project.

1.4.1:

• Fixed missing trace for Ram_CS

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 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

Pushbutton On/Off Controller PMIC using Attiny10

Simple board to adapt a ps2 controller to a psp2000 ribbon signals. Board has tx/rx swapped by mistake, and also needs a 10k pullup resistor on the ps2 data line.

Includes SN74141 binary to decimal driver. Nixie on front of the board, components out of sight on the back. Standoff holes accommodate #4 or M2.5 screws.

Rev 1: Increased isolation to 12 mil, modified footprint on 20k resistor, removed unnecessary header designators.