I use the G400-S in an own PCB(prototype). 1 of 2 operates normally, but the other one can’t update the loader.
The device manager shows me “AT91 USB to Serial Converter(COM20)”.
When i follow the instructions at this Website [url]https://www.ghielectronics.com/docs/336/g400-bootloader-installation[/url] then i stuck in point 9. The update is never over. Knows anyone how to solve this problem?
@ Dave McLaughlin - Yes, i know that’s not recommended
to the Images: the PCB has 4 Layers. it should be in the right order(1-4), the via’s are covered but i don’t think that they’re tented.
I can’t see the USB connector in your images but do you have any ESD protection on the USB lines? It should be located near the USB connector itself. Plugging in the USB cable can generate transients on the USB inputs so you should really have protection. I am pretty sure the G400S does not have this onboard.
@ lmu - There should be a log file in C:\Users[user]\AppData\Local\Temp with a name starting with “GHI Electronics G400 Loader Update Log-”. Find the latest one and post its contents here.
@ John - I tried the 2016 R1, but still the same Problem. This Board doesn’t work before:( I use 3 different PCs to update. At the first PC the board is everytime decected like “AT91 USB to Serial Converter(COM18 )” and at both other PCs is it an unknown device(after connecting pin 8 on socket 3 to ground)