Monthly Archives: October 2019


Temperature, humidity and light sensor in one simple package for almost no money!     Links to buy the stuff ESP01 and programmer https://ebay.to/2IvlzFA GY49 Light sensor module I2C https://ebay.to/336Z6Xi SHT21 Temperature Sensor I2C https://ebay.to/2Opqc89 3.3VDC Step down module https://ebay.to/2LS1rQi Flexible silicone wires https://ebay.to/2olbZOM Ferrules and tools https://ebay.to/35h9w8C Crimper and […]

Universal MQTT wireless sensor based on ESP-01