PCB etching timelapse (Patreon)

PCB etching timelapse

Music: Drops of H2O ( The Filtered Water Treatment ) by J.Lang (CC BY 3.0) http://ccmixter.org/files/djlang59/37792 This is 32x time lapse of etching a PCB using sodium persulfate (Natriumpersulfat). 50g Na2S2O8 + 250g hot water. It was kind of slow this time. I guess the water could be hotter. Recommendation is 50°C. I got once faster results using almost boiling water. I used toner transfer and supported some thin parts using a marker. The PCB is a breadboard fanout for the HM-10 BLE module with TI CC2540 chip. Subscribe my channel to see some applications using Bluetooth in future.