Connection The parts arrived for my adjustable laser diode driver! Components here are an LM317K with heatsink, 100Ω 10-turn precision potentiometer, 15-turn counting dial & a 7-pin matching plug & socket. Here is the schematic for the driver circuit. I have used a 7-pin socket for provisions for active cooling
This is detailing my portable multi-purpose power pack of my own design. Here is an overview, mainly showing the 4Ah 12v Ni-Cd battery pack. Panel Features – Bottom: Car cigar lighter socket, main power keyswitch. Top: LED toggle switch, provision for upcoming laser project, Red main Power LED, 7A circuit
Here is a Bosch 14.4v Professional cordless drill/driver, recovered from a skip! It was thrown away due to a gearbox fault, which was easy to rectify. Here is the drill with the side cover removed, showing it’s internal parts. The speed controller is below the motor & gearbox here. The