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7:21
YouTube
Sameer Gupta
DTMF 8870 Decoder using Arduino and Relay
A complete tutorial video to learn the basics of tone encoding and decoding where dialing pad of phone is used to control the relay to operate any light, fan, tv etc. Required items: MT8870 Module https://amzn.to/3A86jKz Node MCU https://amzn.to/3OmQPGW Relay Module https://amzn.to/3NjJHda Download the program & image files https://drive.google ...
2.6K views
Jun 25, 2022
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