Category: Misc Hardware

ESP32 S3 DevKit Experimenter PCB Design

This a version of the ESP32 WROOM Mozzi Experimenter PCB for the latest ESP32-S3 DevKitC board I've found. For the background on the boards themselves, see my notes here: ESP32 S3 DevKit. ESP32 S3 DevKit Experimenter PCB Build Guide Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible … Continue reading ESP32 S3 DevKit Experimenter PCB Design →

Arduino Pro Mini USB Host Proto PCB Build Guide

Here are the build notes for my Arduino Pro Mini USB Host Proto PCB. Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! If you are new to electronics and microcontrollers, see the Getting Started pages. Bill of Materials Arduino Pro Mini … Continue reading Arduino Pro Mini USB Host Proto PCB Build Guide →

Arduino Pro Mini USB Host Proto PCB Design

This is a prototyping board for an Arduino Pro Mini and mini USB Host shield. Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! If you are new to electronics and microcontrollers, see the Getting Started pages. The Circuit This is mostly … Continue reading Arduino Pro Mini USB Host Proto PCB Design →

Atari 2600 Controller Shield PCB Build Guide

Here are the build notes for my Atari 2600 Controller Shield PCB Design. Recall from my design notes that this version doesn't deal with paddles very well Here is an updated version that supports paddles better, but at the expense of requiring more complex code to read them: Atari 2600 Controller Shield PCB Revisited. Warning! I strongly … Continue reading Atari 2600 Controller Shield PCB Build Guide →

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 →