<ul><li>Custom firmware has been developed for cheaper Bluetooth thermometers, particularly the Xiaomi LYWSD03MMC temperature and humidity sensor.</li><li>Clones of the Xiaomi thermometer, sold under the Tuya brand, have also gained popularity and have their own open-source custom firmware.</li><li>The firmware, developed by [pvvx], offers similar capabilities as the original Xiaomi firmware, but requires a USB serial adapter for initial installation.</li><li>While the clones may be more affordable, it is suggested that it is worth paying extra for the original Xiaomi hardware due to ease of installation and display quality.</li></ul>

Custom Firmware For Even Cheaper Bluetooth Thermometers

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