Closed charlespax closed 9 years ago
Can you re-program the MCU by ICSP port with LilyPad Arduino USB bootloader?
I cannot reprogram the bootloader with any of my programmers on my OSX machine or on another Windows machine.
On one of the boards I removed the 32u4 and soldered on a new one. I successfully flashed the bootloader via ICSP.
I think there is a problem with the power being supplied from the wall. I can sometime feel a buzz on my computer. From now on I will not plug the T400 into my computer while it is plugged into the wall.
It seem the computer is not grounded properly. http://apple.stackexchange.com/questions/10545/is-it-bad-that-my-macbook-air-is-passing-me-electricity
At a coffee shop running on battery power I just killed another board! It seemed to happen after I accidentally released the SW_PWR button while the firmware was uploading.
I closed my laptop and went home where I unsuccessfully reflashed the boot loader using a TinyISP programmer using the Arduino IDE. The error I get is below.
avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x00
I was then successfully flashed the firmware via USB using a short USB cable. Then I was able to reflash the firmware using the USB cable I was using in the coffee shop.
This is very weird.
I think this whole thing was a ICSP programmer issue. Closing.
I have two Electronics version 0.9 assembled boards from @samchoy88. I've have been flashing them via USB as I develop T400 testing firmware. One board mysteriously stopped working. Now the second board is not recognized by OSX. When I plug in each board I get the following error after running
sudo dmesg
.