Plan C | Breadboard DRAM Tester for Retro Computers Using ATX PSU + Spectrum Stuff @Plan-C | Uploaded January 2019 | Updated October 2024, 4 hours ago.
How to use an ATX Power supply with a Dram-arduino. Cheap, easy testing of 4116 RAM as well as 4164 and 41256. Useful for testing RAM in retro computers such as C64, Spectrum, Apple II and arcade boards etc).
Original Idea, schematic and code:
forum.defence-force.org/viewtopic.php?t=1699
Meanwell PSU mod for 4166 RAM by Muttley Black:
youtu.be/LPavFz61ifM
BOM: £3 Arduino Nano clone, breadboard, jump wires, ATX power supply, a couple of leds and a few resistors.
Also brief overview of reverse polarity protection for zx spectrum and how to use 4164 ram in place of 4116 if you need to.
Good luck All.
How to use an ATX Power supply with a Dram-arduino. Cheap, easy testing of 4116 RAM as well as 4164 and 41256. Useful for testing RAM in retro computers such as C64, Spectrum, Apple II and arcade boards etc).
Original Idea, schematic and code:
forum.defence-force.org/viewtopic.php?t=1699
Meanwell PSU mod for 4166 RAM by Muttley Black:
youtu.be/LPavFz61ifM
BOM: £3 Arduino Nano clone, breadboard, jump wires, ATX power supply, a couple of leds and a few resistors.
Also brief overview of reverse polarity protection for zx spectrum and how to use 4164 ram in place of 4116 if you need to.
Good luck All.
