Inside the SerialChiller is an ESP32, a MAX3232 line driver ... Rather than using the SerialChiller as a simple serial to WiFi bridge, [Lasse] is actually implementing a complete web-based ...
The latest is the TTGO T-Call, an ESP32 breakout board ... that have more Gees than a 2G module. That said, if you’re looking for a WiFi and cellular bridge for fifteen bucks, you could do ...
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