Category: Misc Hardware

Atari 2600 Controller Shield PCB Design

This is an Arduino Uno shield format PCB for hooking up two Atari 2600 style controllers to an Arduino. Note: this iteration of the design doesn't really do the paddles very well, but it works fine for joysticks and keypad controllers. Atari 2600 Controller Shield PCB Build Guide There are some updates here: Atari 2600 Controller … Continue reading Atari 2600 Controller Shield PCB Design →

Diagnosing and attempting to fix a Yamaha DX100 – Part 3

At the end of part 1, I've established that the basics all seem ok (PCB, interconnections, power) and that basic digital logic stuff is happening. In part 2 I checked the ROM, reflowed a number of the solder joints, and started to look at the connectors between the main PCB and the LCD, but still with … Continue reading Diagnosing and attempting to fix a Yamaha DX100 – Part 3 →

Duppa I2C MIDI Controller – Part 4

This is revisiting my Duppa I2C MIDI Controller this time using a Waveshare Zero format device. Part 1 - getting to know the devices and testing them out. Part 2 - adding MIDI to the LED ring and I2C encoder. Part 3 - adding normal encoder, plain potentiometer, and endless potentiometer control. Part 4 - revisits the idea with … Continue reading Duppa I2C MIDI Controller – Part 4 →

Forbidden Planet “Krell” Display PCB Design

This is a PCB to support one of my dual Forbidden Planet “Krell” Displays. Rather than using ready made programmable LED rings, this is using through-hole APA-106 programmable RGB LEDs. Forbidden Planet “Krell” Display PCB Build Guide Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any … Continue reading Forbidden Planet “Krell” Display PCB Design →

Duppa I2C MIDI Controller – Part 3

This is a follow up post to Part 2 expanding on the code and adding in some of the alternative control options I mentioned. Part 1 - getting to know the devices and testing them out. Part 2 - adding MIDI to the LED ring and I2C encoder. Part 3 - adding normal encoder, plain potentiometer, and endless potentiometer … Continue reading Duppa I2C MIDI Controller – Part 3 →

Duppa I2C MIDI Controller – Part 2

This is a follow up post to Part 1 where I'm starting to look at MIDI applications and a range of control options. Part 1 - getting to know the devices and testing them out. Part 2 - adding MIDI to the LED ring and I2C encoder. Part 3 - adding normal encoder, plain potentiometer, and endless potentiometer control. … Continue reading Duppa I2C MIDI Controller – Part 2 →