PCB process
pcb-making procedure for the WiFi-logger prototype
boards:
After soaking in water. |
Ready for etching. |
Ferric Chloride. |
After 20 minutes ... |
... 25 minutes |
.. 30 minutes. Ready for cleaning. |
1st version: part-drilled. |
Just lucky with the 2nd version. The corner-circles match the box. |