Posts in "Electronics"

19 June, 2011

Well, After five days of pulling my hair out, I’ve gotten the MCU on the BeeCNC Motherboard to respond to programming commands! The checklist for possible problems included a bad crystal/ the wrong type switched input/output lines incorrect crystal caps bad MCU chip RESET line problems Unfortunately, the list didn’t include the problem: a short on one of the crystal pins to a data line! The data line was not in use and so the crystal could not oscillate at all: the microcontroller was stuck on cycle #1 after programming.