The Olimex ESP32-POE board has been running reliably for several months, with its three sensors posting readings to an Influx DB every few seconds. The board’s PoE circuit runs hot, but the temperature is well below the rating of its industrial-grade components. The ESPHome firmware has made it easy to integrate the board into a larger system, and its features have been a game-changer for my use case. ...
The BTS7960 H-bridge is being used to drive a ventilation boost fan, which has been successfully tested and found to work well with an ESP32 controller. The fan can be controlled at any speed by adjusting the PWM output from the ESP32. However, there are still some issues to resolve, such as detecting air flow direction and dynamically adjusting the fan reverse to keep air flow stopped. ...
The ESP32-C3 Super Mini boards arrived from Aliexpress, but mine are the flawed design which puts the Wifi antenna too close to the external 40 Mhz clock, impacting reception badly. Despite this, it found an identical list of Wifi APs as my phone and reported signal strengths only a bit worse. The boards have 400 Kb of RAM, 4Mb of flash, run at up to 160 Mhz, and have a 32-bit RISC-V instruction set. They are single-cored, missing hardware floating point, but do have hardware crypto acceleration. For €1.50 inc VAT delivered, that is a whole load of computing for the money. ...
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(Last updated: 2024-10-16 08:37:32 +0000 UTC)