Friday, August 9, 2024

Resurrecting The Met One MSO Weather Sensor

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  We have three defective MSO weather sensors from Met One Instruments that have been sitting in the junk box for over 7 years. Upon checkin...
Tuesday, July 9, 2024

Measuring the Impedance of a UHF Quadloop

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  Quad loop antenna is indeed has a 100ohms impedance at the feed point. I tried to build a UHF version of the quad and sweep its frequency ...
Monday, October 16, 2023

DIY 30W Power meter using 10dB Attenuator

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  While browsing the internet I came across a 100W/10dB attenuator resistor with a surprisingly low price. This sparked an idea in my mind -...
Monday, September 11, 2023

Advantech WISE-4220-S231 IoT Wireless Module

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Today, I will be sharing the advantages of using IoT devices such as the Advantech WISE-4220-S231 wireless sensor. The  WISE 4220 series is ...
Tuesday, June 20, 2023

DIY Arduino Uno Data Logger

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Another great project that you can make with arduino is the datalogger. The basic design of a logger calls for a timer, a memory and convert...
Wednesday, September 28, 2022

Homebrew SWR / Power Meter for HF and VHF

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  A friend is asking if I can fabricate a low-cost SWR/power meter with accurate performance up to  144MHz. One of the designs I have attemp...
Monday, September 26, 2022

Digital Tank Level Meter

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At my current workplace, we operate with large tanks designed for storing huge quantities of chocolates. Regrettably, these tanks lack built...