Quick Notes #1

In the latest SKD 1.0.0 I've seen an interesting function: system_update_cpu_freq Function:   Set CPU frequency. Default is 80MHz. Proto...

New SDK version ( 1.0 )

Espressif the producer of the ESP8266EX chip has announces availability of a new SDK. If you want to download the latest SDK click here. So...

Attention on mounting DHT11 sensor

If you have this development board and you want to mount the DHT11 temperature and humidity sensor that came with the board, you should NOT ...

Publish data from your ESP8266 to thingspeak.com

On this posts ( post#1 , post#2 ) I've presented how to create a channel, fields, API KEYS on thingspeak.com Now will publish some data ...

Example: Blink a LED

Like in the Arduino case one of the first thinks to try it is to blink an LED. The following link contains the code for blink an LED. Mater...

ESP201 dev board - One more finding #2.

Perfect ! The last piece of puzzle was found. How to control the relay on the ESP201 development board. The on board relay is connected to D...

Problems reading VCC

In the SDK there is a hidden function called readvdd33() that returns the internal measured VDD. 000004f8 T readvdd33 On my setup board I am...

ESP201 dev board - One more finding #1.

Good news today! I have managed to find why the GPIO15 connected to the RED RGB LED was not working ! The answer was under my nose. DIP pin ...