Open shashfrankenstien opened 2 years ago
@shashfrankenstien In the fear of bricking one of those, I found a video a couple of months ago that shows how to unbrick it using a TL8666ii Plus https://www.youtube.com/watch?v=oY_f5JrJ6y8
Here in Colombia it's around $100 USD which is very expensive compared to the $2's ATTiny85.
I would really appreciate it to hear about you back using this programmer and knowing whether you were able to unbrick it.
Hi @wholder,
I've been trying out your debugger setup as you've described in debugwire2. I've been testing this with an Arduino Uno as ISP and an ATtiny85 as target.
My first few tests went great! I was able to set DWEN fuse, step through code, exit and disable DWEN fuse.
I wanted to write some python code to interface with the debugger over the serial interface and automate checking register states at breakpoints. However, while trying to get this working, I must have done something wrong. I lost the ability to change the DWEN fuse.
I thought I bricked the chip. So I broke open a fresh one and started over. But now, though I can load the program and set DWEN fuse, I can't disable it.
I've check and rechecked my connections, everything looks right. Is there a possibility the Arduino GPIO pins are misbehaving? I am hoping you've come across something like this. If so, please do let me know!
My current solution is to build a 'High Voltage programmer' as described in this article to try and rescue the chips.
F
B
L0000
EXIT
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