This drill press was built to drill through-hole printed circuit boards. [Rhys Goodwin] didn’t want to shell out for new equipment, so he dug through his scraps to see what he could accomplis… ...

PCB, Case, Knob for VR1, Red and Black 4mm Terminals, Mains Flex, Expo Reliant PCB Drill. This project, including all text, images and diagrams, is copyright 1991 - 2003 Paul Stenning.

Rejoice ! The latest Wemos D1 mini version (3.1.0) has mounting holes. But it lost the metal shield, which concerns me a bit. By the way the version shown here are not from the genuine Wemos shop ...

PCB Drilling Speed Control Circuit Schematic. In this circuit, the renowned timer chip LM555 (IC1) is used as a PWM circuit. The whole circuit can be powered from a standard 12VDC supply, capable of ...

Using a power supply adaptor with a speed regulator like the one featured here can certainly improve the performance of the drill. Schematic of the Mini Drill Speed Control Circuit. The speed ...

PCB drill bit maker Topoint warns of weak 1Q23. Topoint eyes growing sales of drill bits for IC substrates in 2022 ... BIWIN Mini SSD unleashes the potential of ultrabooks. Wednesday 16 April 2025.