Idea: Keep ESP8266 on OFF mode as default External 3.3V signal (can be short or long) arrives and turns ON ESP8266 ESP8266 wakes up and keeps itself awake until a task is perfomed Send MQTT data to server Put ESP8266 back to power OFF state Implementation: ESP8266 is in OFF state, GPIO0 is low 3.3V signal […]
Extreme Power Saving of ESP8266 using External Interupt Read More »
Wouldn’t it be nice to know if your dog’s water bowl is empty? Let us build a sensor that measures the water level every 5 minutes. This value is sent to MQTT server and Home Assistant automation takes care of the rest. This sensor connects to MQTT and Home Assistant. See dogsensor.yaml for adding this
Internet Connected Water Bowl Sensor Read More »
Let’s say that you don’t have your smartphone around and someone mentions you on twitter. Wouldn’t it be nice to have a display that automatically reads your twitter mentions and show it on a scrolling display? So let’s build a internet controlled (IoT) dot-matrix display that does this for us using an ESP8266. The plan
Twitter Mentions on a Dot-Matrix Display Read More »
Building electronics is one of my hobbies and I have in the recent year developed this skill to a point that I can help inspire others to make these things that make our day to day activities easier. Activities as simple as turning on and off lights using the internet (or using voice via siri/alexa/google
Internet of Things (IoT) Read More »
