The BeeCNC uses the salvaged 7V EPSON steppers, which draw about 0.
A salvaged EPSON motor from an old printer serves to drive one of the BeeCNC axes.
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.
The first version of the BeeCNC uses a motherboard I designed myself to test my steppers and the usability of the Teacup firmware on an Atmel ATmega328P chip.
I’m still working on the BeeCNC.
I am looking into buying an Arduino Cookbook, and I wanted to extend a warm thanks to the team at O’Reilly Publishing for its support of DRM-free eBooks.
I took a look at the great work David Carr has done with his Mantis CNC mill for PCB fabrication.