These are some of the things I’ve made as proof of concepts in learning how to make them and place them using the ESP8266.
I’m using the ESPEasy system, which is really easy to set up. Use the OpenHAB MQTT Protocol.
I did make most of these a while ago when I was using another setup. I have been slowly been integrating them into HA as I’m learning. They all talk back to HA via MQTT.
This is in a bathroom. A 1st gen NodeMCU. Has a DHT 11, piezo buzzer, PIR, Pushbutton switch and a DS18B20 Temp sensors on the hot water pipe. It’s the first one I made a couple years ago. Ideally it is supposed to monitor the hot water pipe and buzz the buzzer when the water reached temperature. Know when someone entered and start a timer for when their in too long. The button is the cancel if the buzzer is alert or a toggle for the lights. Haven’t integrated it in that capacity yet.
This is the shelf where the RPI running HA is currently. It was in the dead center of the house and running on wifi about 60’ away though 4 brick and mortar walls from the router (which is in the background). However the performance sucked. I moved it here to get on a wire, but lost the front half of the house Z-Wave. Deciding whether to put it back on a wire (which means running a wire), getting a z-wave repeater or a Wifi dongle for the PI.
There’s another NodeMCU which is collecting temperature data from 4 rooms via DS18B20s running over the old phone lines. It also gets data from a DHT11, PIR and Light Sensor (below pic)
I took the pic before I added the Light Sensor.
This was originally for a temp/humidity sensor but the heat from the voltage converter was skewing the result. Since I had to move it out of the case for now I added a light sensor to the room.
This I guess would be v2 of the one above. Different design to try and mitigate the heat. Same sensors.
This one I made in the idea of a stick that could be inserted into the end of USB charger and stuck in remote areas of the basement.
The boxes are Dual Ethernet wall boxes. I got a ton of them went RadioShack was liquidating and closing stores.
All the parts I got cheap on the slow boat from China. Each sensor cost no more than $10. Most half that.
Theres not a lot of electronic knowledge needed. Just soldering skills at the least. The rest just understanding and making the connections. Your limited to the sensors that ESP Easy has available if you go that route, there it is a full spectrum of stuff that should cover basic wants.
