Test Equipment Kits

This 3 state logic probe design includes power connection leads and utilises the LM339N chip to provide logic states when checking circuits, output pins on boards etc.

(SC April '04) Allows quick "in-circuit" detection of defective electrolytic capacitors. 0.01-99Ω autoranging. Includes case & fully screened & punched front panel.

Utilises photoplethysmography sensing to detect blood flow and heart beating. This project is ideal for interfacing with Arduino projects requiring biometric monitoring. Published in DIYODE Magazine November 2017.

Designed by Altronics. A decade box is a really handy device for trying resistor values in-circuit before you select the final value to solder down.

Designed by Altronics. (SC Aug. 2014). A decade box is a really handy device for trying capacitor and resistor values in-circuit before you select the final value to solder down.