The ESP module can control things with it's build-in GPIO output pins. We can turn these on or off or we can set these pins to a special Pulse modulated value (PWM output). And it's also possible to send short pulses (single puls) to one of these pins to control specific devices that are switched with a single short high or low signal.
It's best to connect a LED to the GPIO to test your setup. You could dim this LED with the PWM mode commands. Be aware that the ESP8266 only supplys 3,3v at a max current of only ~10mA.
You dont need a Device definition (task) to control basic GPIO output. You can always control all the pins by HTTP.
|Command||GPIO||Value||Information||HTTP example||MQTT example|
(topic: <MQTT subscribe template>/cmd)
|GPIO,<gpio>,<value>||0...16|| 1 (HIGH)
|Basic on/off. We can control a pin with simple http url commands. To change the pin to high or low steady output|| http://<espeasyip>/control?cmd=GPIO,12,1
|0...16||0...1023||To set a certain PWM level. If you have set a certain GPIO to a PWM level and want to use it as a regular HIGH/LOW pin you need to reset by setting the PWM level to 0. You can use the duration (ms) parameter to create a fading.|| http://<espeasyip>/control?cmd=PWM,13,500
|Pulse,<GPIO>,<value>||0...16||<state>,<duration>||To send a short pulse to a certain pin. Example to send an active high (1) pulse on GPIO 14 for 500 mSeconds. Pulse duration is in milliseconds. State is 1 or 0.||http://<espeasyip>/control?cmd=Pulse,14,1,500||Pulse,14,1,500|
|LongPulse,<GPIO>,<value>||0...16||<state>,<duration>||To send a long pulse to a certain pin. A long pulse is basically the same as the plain pulse. The only difference is the time base in seconds rather than in milliseconds. So it's more suitable for longer duration. Example to send an active high (1) pulse on GPIO 15 for 10 minutes.||http://<espeasyip>/control?cmd=LongPulse,15,1,600||LongPulse,15,600|
|Servo,<value1>,<GPIO>,<value2>||0...16|| value1: servo number
|To control a Servo Motor. We currently support a maximum of two servo motors so you can build a pan & tilt device if you like. Example to set servo 1 on GPIO 2 to a 90 degree position and servo 2 on GPIO 16 to a 45 degree position.|| http://<espeasyip>/control?cmd=Servo,1,2,90
Tones, melodies and ringtones
For using tone and rtttl commands you should head over to the Buzzer (RTTTL) section.
Caveats: User Beware!
The ESP8266 is a small chip with a lots of possibilities.
There are many pins called GPIO but be aware: These pins differ even they are all called GPIO!
The GPIO16 (D0) is a good example: Besides GPIO it is used for waking up from deep sleep.
So internally it is connected to a hardware timer and does not have all possibilities of other GPIOs in exchange.
So a DS18B20 will not work on GPIO16 neither will any plugin using interrupts work.
For a full list of GPIO pins and hints what's conencted inside the chip see []