Arduino The Best 100 Projects

[LeeAndro]

English | 2022 | ISBN: N/A | ASIN: B0BBD62728 | 1100 pages | EPUB | 13.3 Mb

The base for this project is the code of Rodolfo Broco Manin (RodLophus on GitHub) which contains a beautiful analog scale on 16x2 LCD.​

I modified his code by adding two analog meters for reading the signal strength and frequency, "stereo" LED, and "auto /manual search" LED. Also, as a retro detail, I added four memory keys whose frequencies are predefined in the code, so the radio gets a completely antique look. Audio outputs of the TEA5767, via a stereo potentiometer, are connected to the D class power amplifier module with the power of 2x3w which is quite enough for this purpose. To the amplifier are connected two 2-way speakers with adequate power. The high-tone speaker is separated from the bass-midrange speaker with 1mf capacitor. Аnalog meters are from an old defective radio but you can use any meter, and a full deviation of the needle will be adjusted with trimmer potentiometers. The device is powered by two lithium batteries in series through a 7805 stabilizer, so we have stabilized 5V source.



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