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LILYGO T-Embed SI4732 is an ESP32-S3 development board with an AM/FM radio, a TFT display, a rotary encoder, a built-in ...
Valetron Systems VALTRACK-V4-VTS-ESP32-C3 (or ... 4 MB flash Wireless – 2.4 GHz Wi-Fi 4 & Bluetooth 5.0 Cellular and GNSS connectivity SIM7672G 4G LTE Cat 1 module with Global LTE band, 2G fallback, ...
After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.
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