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 ] | + | 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 18:57, 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 | PCA9685]
Example
