Tests and Measurement - Circuits - Electronic Blog for hobbyist

Atmega8 measures ambient temperature and relative humidity using HSM-20G sensor

Simple device, for measuring temperature and humidity.

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Category: Tests and Measurement | Views: 1852

2.5 GHz Frequency Counter with Blue 2x16 LCD display

A frequency counter is one of the most important measuring tool we need as homebrew's of RF electronic. This frequency counter has very high performance and still is very easy to build and to use. Anyone can build it and have a professional frequency measuring tool. The counter is based around a LCD display with 2 lines and 16 chars. ... Read more »

Category: Tests and Measurement | Views: 5497

LC meter with pic16f628a

This LC meter design is pretty old but since it is a perfectly good device there was no need to design/build/debug one of my own. So, I just changed the original firmware a bit and added few electronic goodies to it to make it more compact. ... Read more »

Category: Tests and Measurement | Views: 4726

Frequency Meter

Here is my new Frequency meter who was done with a LCD's cellular phone!!! This is a simple project. The Frequency is passing through an op-amp to convert it in a square wave. The ouput of the op-amp is feeding the 3*8 bits counter (24 bits) who can accumulate at a maximum of 16777216 count. ... Read more »

Category: Tests and Measurement | Views: 1111

Inductor and Capacitor Meter (LCMeter)

Here is my new inductance & capacitance meter. I had took the analog oscillator part from a well know schematic found on the internet and adapt it for a AVR. It's impressive to have a very accurate result with a so small circuit. The way it's work is simple you chance a oscillator frequency with the part you want to find is value.

Category: Tests and Measurement | Views: 1325

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