Universal ROM programmer on a breadboard capable of programming even the 21V "high voltage programmable" EPROMs.
In this video we successfully program a 21 Volt EPROM and also try to erase it.

Dedicated EPROM eraser: https://s.click.aliexpress.com/e/_DmA...
(Affiliate link)

If you'd rather pay for a new (and much less DIY) T48 programmer you can use with Minipro, you can buy one here: https://s.click.aliexpress.com/e/_DBR...
(Affiliate link)

If you prefer the cheaper option I'm working on, I suggest you get a 65uino from my shop on the link below to get ready for the next video where I should have a super cheap ROM programmer shield ready for you to make/print/etch/order.

Buy a 65uino kit (ICs BACK IN STOCK!): https://www.imania.dk/samlesaethobby...
Shipping available to 51 destinations worldwide.

Schematic and KiCAD project files for the programmer: https://github.com/AndersBNielsen/Rel...

Complete schematic, source code and everything about the 65uino (including the source code used for the programmer):
https://github.com/AndersBNielsen/65uino

IC lead bender: https://www.thingiverse.com/thing:470...

Join the free clubhouse on Discord:   / discord  
Let's chat about what you like best about old chips, electronics, breadboards and hacking all sorts of things!

Check out my other 6502inspired videos:    • 6502 Computer  

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