Basic Information: Printer Model: Custom MCU / Printerboard: Bigtreetech Manta M8P Hi all! I have a photoresistor and I want to make sure that the motor does not move in the dark, but moves in the light. Is it possible to implement such an endless check? Is there a demon like in RepRap?

Hello @TheDoshs ! [image] TheDoshs: that the motor does not move in the dark What motor?

I have quietly spinning motors that are attached to the board (axles and extruders) And I want to implement this function with a photoresistor on any of these motors :yum:

So you don’t want any movement on the printer during darkness but keep the heaters on?

The sensor will react to the light from the LED, if it is not there, then the motor movement must be suspended. If the sensor catches the light, then it is necessary to resume the movement of the motor. I don’t use heaters

Could you take some time to explain exactly what you are doing? People here look at printers with the expectation that they are FDM which means they do have heaters and are expected to work at all times.

Not knowing more of the project like has already been asked. If I wanted this type of condition, this may be oversimplifying it, but I would simply use a gpio pin, add it as a filament sensor that triggers a special pause macro that saves your current state, and will resume when cleared. If your no…

[image] mykepredko: Could you take some time to explain exactly what you are doing? People here look at printers with the expectation that they are FDM which means they do have heaters and are expected to work at all times. I need to make the supply of dry cement according to the above-menti…

Could you tell me how you would do it through GPIO? :blush:

It turned out to implement this idea using [gcode_button]. Thank you very much!

Hello again! Unfortunately, when using [gcode_button], the printer does not stop/resume the extruder during printing, which is responsible for feeding the dry mixture. [gcode_button my_gcode_button] pin: PC5 analog_range: 1, 10000 press_gcode: M117 "lights on" SYNC_EXTRUDER_MOTION EXTRUDER=tran…

Photoresistor and motor

General Discussion

Sineos December 1, 2023, 9:34am 12

Partially your issue might be due to design, partially it might be some currently unknown issue. Refer to Bug found with gcode_button for some background discussion

Topic		Replies	Views
Changing rotation_distance during printing depending on sensor readings General Discussion	13	293	April 14, 2024
How to turn on/off GPIO LED based on state General Discussion	6	15174	June 6, 2025
Error: tmc virtual endstop requires diag pin config General Discussion	4	1167	October 2, 2024
Problem with printer configuration - PT1000 sensor, motors not moving General Discussion	6	8373	May 14, 2024
Runout sensor problem General Discussion	4	716	July 1, 2023

Photoresistor and motor

Related topics