Saturday, May 30, 2015

Espp8266 + DS18B20 = Show temp using Ssids

Using ssids as a medium to transfer information is both fun and interesting.
Building upon my last post using the ESP8266 to transmit multiple ssids I hooked it up to a DS10B20 temperature sensor. 
Every time the temperature changes the ESP8266 creates a new ssids with the current temperature stored in the ssid string. 

In order to know which temperature is the most recent, the current uptime in seconds is prepended to the string. This is hacky but works.

Code is here:

Sunday, May 24, 2015

Ssid announcer using an ESPP8266

The ESP8266 is an interesting, inexpensive platform which offers wifi capabilities and an 80 MHz CPU.
Recent advancements include arduino IDE compatibility.
This makes development quick and easy.

A quick demo I wrote was to loop over multiple SSIDs.
This can be used to announcing the schedule of an event.

Code is here: