Posted inMeters & Detectors
Sound level meter circuit using LB1409
This project is a sound level meter circuit that easy and very cheap, can drive 9 LED display,The LB1409 is used as base of this circuit makes small size.
Posted inMeters & Detectors
Digital temperature meter using LM335 or LM135
This is digital temperature meter circuit that has High the accuracy temperature measurement. it use ICL7107 for LED 7 segment display and LM335 or LM135
Posted inMeters & Detectors
Digital capacitor meter projects easy to build
I recommend the digital capacitor meter projects. It can measure capacitors ranging from 1pF to 2,000 uF. Which covers almost all of capacity. And cheaper [...]
Posted inMeters & Detectors
Multi function digital frequency meter circuit 0-100MHz
The Multi function digital frequency meter circuit 0-100MHz, is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures sector…
Posted inMeters & Detectors
Cheap alcohol tester circuit
Party is a lot of fun. Alcohol makes us happy. And. we should make an alcohol tester. Why? We do not need sad about it, right? Imagine your friends who…