Motorised Blind Controller for D1 Mini, PSU Shield and a Stepper Driver A4998
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A remote controller for my blind which contained a D1 Mini, PSU/Power Shield and stepper driver with local button
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- Źródło
- Printables
- Kategoria
- Other House Equipment
- Licencja
- Creative Commons — Attribution — Noncommercial
A simple friction fit case to hold a D1 Mini, a PSU shield and space for a A4998 with a basic button found on ardiuno kits etc.
The D1 and PSU are connected using standard length headers with the switch being soldered onto the d1 mini, The Steppers pins are soldered directly to the underside of the PSU board, I've left plenty of room inside the case for extra cable/airflow. the hole at the top is for the cable out to the blind motor.
The PSU is readily available under "WEMOS D1 Mini / Pro DC Power Shield" solder the headers and the second psu supply input (its used to backpower the driver)
The motor is housed in the motor section of https://www.printables.com/model/58395-electric-roller-blind-conversion and is a 28byj-48 motor with the bipolar fix (just scratch the middle trace off the case) and forget the middle cable.
Wiring is similar to the bottom image on https://tasmota.github.io/docs/A4988-Stepper-Motor-Controller/#wiring-diagrams I've added a poorly made paint picture of the diagram
The software is using esphome and https://github.com/RoadkillUK/Motor-on-a-Roller-Blind-for-ESPHOME/tree/master but modified to use a A4998
Line 169 - Changed to D2
Line 104 - Changed to:
stepper: - platform: a4988 id: my_stepper step_pin: D6 dir_pin: D5 sleep_pin: D7 max_speed: 600 # Optional: acceleration: inf deceleration: inf