The story behind: Many people are complaining about I2C communications problems, mostly related with the NodeMCU LUA. I found out that many of the related problems are generated from a easy to fall in trap, generated by the way how code is executed in case of a step-by-step debug run Read more…
Using a 433Mhz radio link the ESP8266 CBDB Dev Board module equipped with a DHT22 temperature/humidity sensor is uploading data directly to the Konig 433 mhz wireless station with hygro-thermometer [KN-WS400N] : And the story behind: As been working to a ESP DHT22 sensors array for a Environment data logging Read more…
I was asked if MCP9008 Temperature sensor can be replaced with the less precise but widely available LM75 one. The answer is YES, it can be done without any problems, actually they can share same slot on CBDB Dev Board without any hardware changes, just choose your desired I2C address Read more…
As it was requested from you, my readers, in Part 3 of our CBDB saga, we will start building a simple, high precision, Temperature Data logger based on the MCP9808 chip, a ±0.5°C Maximum Accuracy Digital Temperature Sensor. As far as I know this is the first time NodeMCU float Read more…