FAQ
FAQ of VdMot Controller
Q: How can I get one?
A: The board is available via Tindie: https://www.tindie.com/products/lenti/vdmot_controller/
Please have a view for scope of delivery, order information and costs.
Q: Which revision of the hardware do I get when ordering via Tindie?
A: At the moment (july '23) the C5 sample is the actual hardware revision available. For details on the hardware revision please see: https://github.com/Lenti84/VdMot_Controller/blob/master/hardware/hardware.md or https://github.com/Lenti84/VdMot_Controller/blob/master/hardware/assembly_kit.md
Q: Where can I find assembly information?
A: Please see https://github.com/Lenti84/VdMot_Controller/blob/master/hardware/assembly_kit.md
Q: How can I initially flash the ESP32 and STM32 with software?
A: Please see https://github.com/Lenti84/VdMot_Controller/blob/master/assembly_kit/installation.md
Q: Is there a update function for ESP32 and STM32?
A: Yes, you can update your system completely remote by the web UI. Please see https://github.com/Lenti84/VdMot_Controller/blob/master/assembly_kit/installation.md
Q: Where can I find the latest software releases for ESP32 and STM32?
A: https://github.com/Lenti84/VdMot_Controller/tags
Q: Where can I find the latest development software for ESP32 and STM32?
A: https://github.com/Lenti84/VdMot_Controller/tree/developer/releases
Q: How can I use multiple valves for one/the same room?
You have two options:
A1: Set all valves of the room with the same target value via an external control system like FHEM or IOBroker.
A2: Use the internal PI controler and configure one master valve and link the other valves to this master.
For details please see discussion: https://github.com/Lenti84/VdMot_Controller/issues/45 or https://github.com/Lenti84/VdMot_Controller/wiki/Web-UI
Q: Can I extend the cable between VdMot_Controller and VdMot_Valve? How long can this extention be?
A: This is possible. To do best use shielded cable like KNX cable (4x 0.8 mm²). A distance of 10 m was tested successfully by one user. You also can use different connectors:
Q: Which power supply should I use?
A: Please use a power supply with a voltage in the range between 10 to 24 V DC. It should be able to deliver at least 500 mA.
Q: Valve assignment between software and hardware connector seem to be interchanged.
A: Please make sure, that you have used the correct firmware file for the STM32. All hardware from C2 sample and later need file STM32_C2_firmware.bin. The hardware revision is printed to the bottom of the board or depending on the revision also on top.
Q: Software update of STM32 not possible. Neither flashing of "Boot partition" nor flashing of "Normal partition" is possible.
A: One reason might be, that jumper on X20 is not connected. X20 must to be shorted to flash STM32, regardless of "Boot/Normal partition".
to be continued...