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Despite still being earmarked as new, the offline-only IKEA VINDRIKTNING air quality monitor has already been disassembled, analysed, and hacked.
The TallyWhacker was built to annoy neighbours and consists of an ESP8266, an RC servo, a battery, and, most importantly, a spring doorstop.
This update includes a full integration of the Bosch BME680 sensor, support for GROW fingerprint readers, a BLE client and sensor, and much more.
ESP-XX modules from Ai-Thinker are popular with enthusiats due to their low cost and small size