PCB fabrication
FabISP in-circuit programmer
I chose the to print Valentin's board mainly because it has a built-in USB male connector
First attempt with the mill - not too bad
Almost done. Notice how much milled materials there is
Done milling and cleaning (with water and soup!)
I couldn't find 18 pF capacitors, so I used two 10 pF in parallel (soldered them on top of each other). Also, for the bypass filter, I used 10 uF instead of 0.1 uF since that was the closest I found
Done stuffing. This was my first time soldering SMD; my impression was positive because the process turned out to be easier than I thought
I have an AVR programmer (avrisp2) that I used to program this usbtiny. The only change that I made for the makefile is this line: AVRDUDE = avrdude -c avrisp2 -P com3 -p $(DEVICE)
It only took about 10 seconds to flash the firmware using WINAVR and it was all done
After removing the programming jumpers by breaking the extension that was attached to board
Done milling and cleaning (with water and soup!)
I couldn't find 18 pF capacitors, so I used two 10 pF in parallel (soldered them on top of each other). Also, for the bypass filter, I used 10 uF instead of 0.1 uF since that was the closest I found
Done stuffing. This was my first time soldering SMD; my impression was positive because the process turned out to be easier than I thought
I have an AVR programmer (avrisp2) that I used to program this usbtiny. The only change that I made for the makefile is this line: AVRDUDE = avrdude -c avrisp2 -P com3 -p $(DEVICE)
It only took about 10 seconds to flash the firmware using WINAVR and it was all done
After removing the programming jumpers by breaking the extension that was attached to board
Done stuffing. This was my first time soldering SMD; my impression was positive because the process turned out to be easier than I thought
I have an AVR programmer (avrisp2) that I used to program this usbtiny. The only change that I made for the makefile is this line: AVRDUDE = avrdude -c avrisp2 -P com3 -p $(DEVICE)
It only took about 10 seconds to flash the firmware using WINAVR and it was all done
After removing the programming jumpers by breaking the extension that was attached to board