AVR ISP Programmer Based On CH551G |PCB From PCBWAY.COM

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Simple and cheap AVR ISP programmer based on CH551G and couple of passive components.
My first AVR programmer was just a parallel port cable with few resistors. It worked like a charm, but I eventually upgraded to AVR Dragon. AVR Dragon can also be used for debugging and much more.
Recently I wanted to have simpler programmers, without all the bells and whistles. Parallel port isn't present in modern computers, so I couldn't use the old style programming cable.
I decided to design similarly simple programmer with USB-C port. CH551G is great microcontroller for this kind of applications, as it only needs couple of passives when creating USB gadgets.
The programmer circuit shown in this video is as simple as it gets. It supplies the target with 5V power coming from USB. For my use, 5V always wired to the VCC pin is fine, as most of my AVR circuits are designed to be powered from 5V.
Shared PCB:
www.pcbway.com/project/sharep...
Stefan Wagner's repo (I used software/picoisp firmware):
github.com/wagiminator/AVR-Pr...
CH55x files for SDCC (for compiling the firmware):
github.com/Blinkinlabs/ch554_...
Zadig -software for installing libusb drivers in Windows:
zadig.akeo.ie/
CH551G (WCHISPTool for flashing the firmware):
www.wch-ic.com/products/CH551...
0:00 AVR Dragon - The beast
0:35 My first programmer
1:00 PCBWAY.COM AD
1:40 Simpler is better?
2:00 CH551G Based Programmer
3:28 Firmware - Porting?
3:51 Firmware - PicoISP
4:23 Problems, AGAIN!
4:38 Not my fault! It works
5:15 Win10 Drivers
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