Novemeber GARS Meeting

Ham radio meeting at Plymouth airport, the topic was Go Kits, below is a display made by KB1SRO

Clock-It Kit Clone

Burning an ATMEGA328 Clock-It kit form spark fun using AVRDUDE and the USBtiny by Adafruit. I copied the firmware in the original kit and cloned it to make more kit, we redesigned the board to a single sided PCB with 9 jumpers. This made it easy for students to mill out on our T-Tech milling machine.

Come to find out there are three hex files you need using AVRDUDE, the main program  hex file and lfuse and hfuse configure memory hex files. Most of the time I just copy with a universal programmer simple one click but this time it the programmer was broken. So with the usbtiny was a simple connection to the ISP bus. 

Here is my redesign of the Clock-it Kit, note there is no ISP connector so programming it in circuit is not possible.

Find and test communications to chip

sudo avrdude -c usbtiny -p m328p

Erase Chip

sudo avrdude -c usbtiny -p m328p -e

Burn Main Hex file program

sudo avrdude -c usbtiny -p m328p -U flash:w:clockit-v11.hex

Burn Fuses

sudo avrdude -c usbtiny -p m328p -U lfuse:w:0xe6:m -U hfuse:w:0xdf:m