Progress update.
I ordered 4 of the ESP-01 for $8 as well as the USB-FTDI adaptor. While I was waiting for the parts I got my Webserver with PHP up and running.
First program was just to make a led turn on and off by sending commands to the ESP.
Then connected a DHT11 to it and after some
and
, I was able to read data from the ESP.
I am not very impressed with the range, signal strength drops off real quick. Might have to add an external antenna.
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Next step is to decide how am I going to store the data.