(Can replace Homematic IP Floor Heating Actuator [HmIP-FALMOT-C12] ~210$ + [CCU3] ~150$)
The ready to go board costs less than 30$
- Make a floor heating controller
- ESP motor shield (done in v58 rev 1.49 )
- 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)
- 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)
- Wide range of input power 3.3 to 12V
- Easily hackable
- PCB can be ordered with chips assembled at JLPCB for 8.5$/unit. (:warning: For old AC version, you have to isolate the AC part with tape)
- The 3.3v power (or 5v) can be HKL-5MX or HKL-PMX (under 2.75$) . The new version use DC input only with a XL1509M module (5-40V input) (under 0.5$)
- ESP32-WROOM-32D devkit with 38 pin costs approx 3.8$ . The ESP32-C3 supermini approx 2.5$
- Box is 3D printed
- Floor heating : https://github.com/nliaudat/floor-heating-controller
- Motor control : https://github.com/nliaudat/esphome-8-ch-motor-controller
https://github.com/nliaudat/floor-heating-proportional-valve | need help !
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 documentation.
- Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC-BY-NC-SA)
- No commercial use
- Actually I did not share the PCB source