Use this opportunity to get a limited available prototype version of the Signal Tracer/Injector Pen for a reduced price. This helps us to fund the next generation 🙂
This prototype comes fully assembled with all SMD parts and only switches and speaker for you to put on.
NOT WORKING: The testsignal is not 100% sine. The amplification may be to loud: remove C7 or replace with 1k resistor.
Watch the video linked in the product image!