I thought I could build more of the JDM programmers and sell them to my fellow classmates. I built some and sold a few of them. Unfortunetely some of the programmers didn't work on some computers, the problem was that the JDM takes power from the serial port, some serial ports didn't seem to provide enough power, particulary laptops.

I modified the circuit so it would use an external power supply.

schematics
Schematics

I designed a PCB for it and brand it under my company name:

programmer

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You've developed an absolutely incredible and wonderful product. (Xprotolab)

Matt Bechberger

 

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