OK... this fixed it... ?Talk about Monkey Wrenches in the machinery.
1) ?I deleted the latest version (v1.4) of the Chinese ch341 driver
2) ?Restarted
3) ?Purchased and installed the mac-usb-serial.com ch341 driver for OS X 10.12
4) ?Restarted, debugged and tested for several hours per the mac-usb-serial.com instructions.
5) ?As a last hail Mary, I set the options under the Arduino Tools Menu to - Processor: ?Atmega328P (Old Bootloader)
6) ?It worked! ?I set the Arduino Preferences to Show verbose output during upload.
7) ?Restarted and tried again. ? It still worked. ?
It is interesting that I do not have to select ?- Processor: ?Atmega328P (Old Bootloader) on my old MacBookPro to get a good upload.
This is only a temporary fix. ? There is an entirely different mac-usb-serial.com driver already released for OS X 10.13. ?When I upgrade to 10.13 the current driver will need to be removed and the new one installed. ?I expect everything to break again for other future OS updates.
I am still avoiding CH34x chipsets like the plague. ? They are very high maintenance if they work at all. ? So please no more products with CH34x chipsets! ? Mac users everywhere will thank you. ?
Thanks to?
Andrew? VK6WAM ? for the link to?.
73?
AB2TS
