44- NPN Light Sensor
$26.50 – $76.50
This circuit uses the output from an LDR to trigger an NPN Transistor (Q1) to drive a Relay (RY1) and fire a single detonator.
Choose “Full Kit (PCB + Parts)” for a solder kit that includes all required parts for the build, a quick reference card and support from our amazing community of makers.
Choose “Assembled and Tested” for a fully assembled and tested ready to use device and reference card.