This is an interesting voltmeter project that display the measured voltage on a TV screen, in giant digits as well as with analog bar. It also records the maximum and minimum values of measurements. The project was built by Alberto Ricci Bitti and was published in the May 1999 issue of Elektor Electonics.
The circuit uses Atmel’s AVR 90S1200 microcontroller with the Maxim’s MAX192 analog to digital converter that has 8 channels multiplexer for its 10-bit ADC. The hardware to generate the composite video signal is extremely simple. The complexity goes to the software part because the video synthesis requires very accurate timing measurements.
For more detail: Turn your TV into a Digital Voltmeter using Atmel’s AVR 90S1200 microcontroller
About The Author
Ibrar Ayyub
I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.
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