There is a cheap brandless ESP32 circuit board that comes with a 320 x 240 LCD display with touch that a number of Chinese businesses seem to be selling, also via AliExpress and Amazon. There's a ...
The $20-per-month ChatGPT plan is more than enough for occasional bug fixes and feature addition runs. Here's a prime example by yours truly.
MCUs are ideal MQTT clients because the protocol is lightweight and designed for low-bandwidth, low-RAM environments.
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