Guest
PicoMiteVGA boot-to-BASIC computer built from a Raspberry Pi Pico using the circuit designs and code available on Geoff Graham’s website here: The PicoMiteVGA was created by Peter Mather, Geoff Graham and Mick Ames, also building on work by Miroslav Nemecek, as detailed on the aforementioned page. My previous video about the PicoMite, where we look in more detail at MMBasic and GPIO control, is here: The Siliconchip PicoMiteVGA kit that I could not order in the UK, but which looks excellent, is here: If you wish to build a PicoMiteVGA, everything you require is available at However, I have shared the STL files for the solderable breadboard brackets I created here: :5754090 And my breadboard layout is here: For information, the parts I ordered from Pimoroni and CPC Farnell were as listed below. Please note that I have no association with either company. MicroSD card breakout: -- also available from Pololu here: Raspberry Pi Pico H: Female headers to mount Pico: 2N7000, TO92 package MOSFET -- two required: 1N4148 TR diode (100V, 200mA) -- two required, but minimum order quantity of five: Trimmer (trim pot), 25 Turn 200R - 3296W-1-201LFx1: 100 nF capacitor, one required, but minimum order quantity of five. This is a bypass capacitor for the SD card wiring, and as explained in the video, in the end I did not need to fit it. But you may need to add one of these capacitors for stable SD card operation: 15-pin D-Sub (VGA) socket: Mini DIN 6-pin (PS/2) socket: Large perfboard (solderable breadboard): Reset switch -- the one I had in stock was very similar to this: I also has in stock the required resistors, namely: 220Ω resistors (red, red, brown, gold), or higher -- seven required. 10KΩ resistors (brown, black, orange, gold), or higher -- four required. Buying resistors like this individually is hard! These are the cheapest packs of these values I could find on CPC Farnell: 220Ω - and 10KΩ - Also used were eight M3 nuts and bolts, about 12mm long, and some wires. I actually cut up a Pimoroni jumper pack, as again buying a lot of different wire colours in small quantities is difficult: For additional ExplainingComputers videos and other content, you can become a channel member here: More videos on computing and related topics can be found at: @explainingcomputers You may also like my ExplainingTheFuture channel at: @explainingthefuture Chapters: 00:00 Introduction 01:15 Plan A 05:07 Plan B 07:24 The Components 09:56 Brackets & Firmware 12:19 Making Progress 16:37 Assembled 19:02 Final Demo 23:10 Wrap #PicoMiteVGA #MMBasic #BASIC #explainingcomputers
