Difference between revisions of "PWM GPIO"
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This feature can be used to dim lights, control (DC)-fan speeds, etc. | This feature can be used to dim lights, control (DC)-fan speeds, etc. | ||
| − | Be aware that the direct GPIO has currently an "heartbeat" issue where flickers can occur. If that is critical to your application you can use the [[PCA9685 | PCA9685] | + | Be aware that the direct GPIO has currently an "heartbeat" issue where flickers can occur. If that is critical to your application you can use the [[PCA9685 | PCA9685]] |
=== Example === | === Example === | ||
[[File:Nodemcu pwm mosfet.png | 640px]] | [[File:Nodemcu pwm mosfet.png | 640px]] | ||
Revision as of 18:58, 22 April 2017
PWM control
It is also possible to output an PWM signal on the GPIO pins.
To set a certain PWM level:
http://<ESP IP address>/control?cmd=PWM,<pin>,<level>
This feature can be used to dim lights, control (DC)-fan speeds, etc.
Be aware that the direct GPIO has currently an "heartbeat" issue where flickers can occur. If that is critical to your application you can use the PCA9685
Example
