ESP8266 Dash Button with AAA Batteries

Well, i loved the dash buttons. I had a tool running on a pi to detect when one of them come up and then my home automation server got a request and one of my lamps turn on or off. Now the batteries are dead and the dash buttons do not work anymore.

Well... Now i have a ESP8266 dash button. I will not explain here how you'll have to flash a firmware, which one is the best and how it works.

My code is self written... Pretty simple. In the Setup just do:
* Connect to WIFI
* wait until Wifi Connection is available
* send HTTP request to my Loxone Home Automation Server
* ESP.deepSleep();

Underneath the coiled up copper wire you see in my Pictures is a little bit of space so you can put there a ESP-01 (with reset connection), ESP-07 or a ESP-12. What ever version you want if it has a rst cable connected.

I used some 0.25mm² CCA copper wire and in a second one just some CAT 7 Network Cable wires;). It is stiff enough to create some resistance when you put the batteries in th