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FYSETC / FYSETC-E4

FYSETC Board - The E4 board is a minimal 3D printer control board based on the ESP32 microcontroller from ESPRESSIF, with built-in Wi-Fi and Bluetooth.
https://www.aliexpress.com/item/1005001703930983.html
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Servo Usage, which pin is accessible? #12

Open theomega opened 3 years ago

theomega commented 3 years ago

I want to use a servo instead of the Z-Axis Stepper motor. The servo would be PWM controlled which is something the ESP32 firmware can support on every GPIO pin.

Is there any GPIO pin from the ESP32 accessible on the board that can be used for this?

Tigger777 commented 3 years ago

I used GPIO0 for a Z-probe ABL servo. You need to solder a wire to the ESP32 (bottom pin on the RHS). You also need a pull-up to 3v3 else it won't always boot. I had already installed everything so I just tied to to 5V with a 39k resistor.

E4尺寸图

lols commented 3 years ago

you can use the z-min plug for servo but you need to see the board pcb i use the z min as bltouch power/servo pin -remove the opto isolator + filter cap + 3.3v pull up resistor(red box) -bridge the opto isolator pin(green line) you will now have the 3 pin +5V SIG GND render sch

OR Should work, i never test, i use the above method -Connect SIG (blue box) -remove this resistor(green box) alt

car-par commented 1 month ago

Hi, I'm new to this and I would like to use a BLTouch on a Fysetc E4 but idk where to connect the PWM cable... and I didn't really understand what you all said in the comments above... Please could someone help me?

Tigger777 commented 1 month ago

Hi, I'm new to this and I would like to use a BLTouch on a Fysetc E4 but idk where to connect the PWM cable... and I didn't really understand what you all said in the comments above... Please could someone help me?

Look above at my screenshot, the orange arrow is pointing to GPIO0, thats where to connect the PWM signal. Can you build the Marlin code? This has been quite an undertaking for me every time there have been updates.

car-par commented 1 month ago

Hi, sorry if I'm replying after a week, I didn't see you had replied. Ok I understood that I had to connect the PWM to GPIO0 but as for the rest it's not clear to me how to proceed. And yes I can build the code. Thanks for your reply