https://github.com/nliaudat/esp32_8ch_motor_shield
An ESP32 based 8 channels motor controller (to replace Homematic IP Floor Heating Actuator)
https://github.com/nliaudat/esp32_8ch_motor_shield
actuator diy esp32 esphome floor heating homematic hydronic motor-controller valve
Last synced: 2 months ago
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An ESP32 based 8 channels motor controller (to replace Homematic IP Floor Heating Actuator)
- Host: GitHub
- URL: https://github.com/nliaudat/esp32_8ch_motor_shield
- Owner: nliaudat
- License: other
- Created: 2021-01-30T10:01:36.000Z (over 4 years ago)
- Default Branch: main
- Last Pushed: 2025-03-24T17:36:47.000Z (3 months ago)
- Last Synced: 2025-03-30T20:11:13.352Z (3 months ago)
- Topics: actuator, diy, esp32, esphome, floor, heating, homematic, hydronic, motor-controller, valve
- Language: OpenSCAD
- Homepage:
- Size: 58.6 MB
- Stars: 100
- Watchers: 17
- Forks: 17
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: changelog.md
- Funding: .github/FUNDING.yml
Awesome Lists containing this project
README
# An ESP32 8 channels motor controller (shield) | Floor heating controller for proportional actuator
(Can replace Homematic IP Floor Heating Actuator [HmIP-FALMOT-C12] ~210$ + [CCU3] ~150$)
The ready to go board costs less than 15$ (excluding shipping)
## Project rules :
This project have rules : open hardware and sources, but not open-bar :)
* https://github.com/nliaudat/esp32_8ch_motor_shield/wiki/Project-rules
## 2 Goals :
* Make a floor heating controller for proportionnal valves ([look at advantages of proportionnal valves](https://github.com/nliaudat/esp32_8ch_motor_shield/wiki/Advantages-of-proportionnal-valves-instead-of-on-off-valves) )
* ESP motor shield (done in v58 rev 1.49 )
## Functionalities :
* Can control 8 DC motors or 4 steppers motor
* Can drive 8 Homematic valve actuators [HmIP-VDMOT] (~15$ each)
* The card use a ESP32-WROOM-32D as logics and wifi connection. (You can get a 32U if you want an external antenna).
* It now supports the ESP32-C3 supermini
* The software runs under esphome to be easy to customize and linked with https://www.home-assistant.io
* Can be extended up to 16 channels (I recommend to get 2 boards for better performances, but the shifts registers can be extended up to 4 [shiftregOut](https://github.com/nliaudat/esp32_8ch_motor_shield/blob/main/shiftregOut.md))
* Use BEMF (back electromotive force) from motors to get endstops
* Can be directly linked to external temperature sensors (wifi,BLE, or via available [free pins](https://github.com/nliaudat/esp32_8ch_motor_shield/blob/main/extension.md))
* 2 onewire connectors (to have precise IN/OUT temperature control over heating circuit)
* USB-C power input or 5-12V input
* Easily [hackable](https://github.com/nliaudat/esp32_8ch_motor_shield/blob/main/hack.md)
## Fabrication :
* PCB can be ordered with chips assembled at JLPCB for 13$/unit. (:warning: For old AC version, you have to isolate the AC part with tape)
* The new version use DC input only with usb-c up to 3A (or custom 5-12V input)
* ESP32-WROOM-32D devkit with 38 pin costs approx 3.8$ . The ESP32-C3 supermini approx 2.5$
* Box is 3D printed
## Firmware :
* Floor heating : https://github.com/nliaudat/floor-heating-controller
* Motor control : https://github.com/nliaudat/esphome-8-ch-motor-controller
## The futur is : Diy proportionnal valves | smart proportional actuator (TRV) with Esp-C3 mcu
https://github.com/nliaudat/floor-heating-proportional-valve | need help !
## Produce your PCB Controller and Enclosure
We tried to ease the steps to get you going to produce the Enclosure and order/assemble your Controller-Board. Please have a look at
the [`HOWTO get going`](./HOWTO_get_going_as_floor_heating_controller.md) documentation.
## PCB sharing
[https://oshwlab.com/nliaudat/floor_heatin_controller_v61](https://pro.easyeda.com/editor#id=15bc77acaa4147fca2a36e92e8cc8681)
## Licence:
* Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC-BY-NC-SA)
* No commercial use