Matter-compatible CCT LED dimmer
Description
is a new standard for IoT automation. Unlike previous standards it does not require a special radio protocol but can work over plain WiFi.
While some devices and controllers exist there are very few LED light controllers, and all of the ones I could find are RGB.
Espressif provides a Matter SDK customized for ESP32 and examples of LED controllers, although without sufficient power to drive a LED strip.
On the other hand, examples of driving a LED strip with Arduino are abundant.
Some copypasta in KiCAD should make it possible to get an ESP32 board that can drive a LED strip with enough GPIO to mount physical switch controls.
Goals
Find a generic ESP32 board schematic that can be adapted
Select additio)nal parts and expand the schematic
Get schematic and BOM that can be used to have a PCB produced by a PCB manufacturing service
Resources
Some tutorial for ESP32 Matter SDK
Another tutorial for ESP32 Matter SDK
High voltage PWM with Arduino pMOSFET
High voltage PWM with ESP32 nMOSFET
All MOSFET type switching schematics
Another site with transistor switch circuits with MOSFET gate resistor example
Looking for hackers with the skills:
Nothing? Add some keywords!
This project is part of:
Hack Week 24
Comments
-
-
about 2 months ago by michals | Reply
random bypass diode WND08P16DJ, random eFUSE LS2406ERQ23
Some protection ICs provide reverse voltage protection but require external MOSFET for that anyway. Using a separate diode is simpler.
There is the problem that typical power protection ICs have voltage rating up to 60~80V but with LED controller it is not hard to imagine it could be connected to mains giving 240V. Also the eFUSE specifically is not intended to work independently, and has an EN pin that needs to be pulled high to enable the eFUSE.
-
-
about 2 months ago by michals | Reply
found ESP32 board designs but none is directly usable
https://github.com/makermoekoe/Picoclick-C3 opensource but using proprietary Eagle software
https://www.roboticworx.io/p/build-custom-esp32-boards-from-scratch using kicad but proprietary HW design files
https://github.com/TobleMiner/ESP32-Devkit-Type-C fully open but using some obsolete or very obscure main chip
While https://www.instructables.com/Build-Custom-ESP32-Boards-From-Scratch-the-Complet/ and https://docs.espressif.com/projects/esp-hardware-design-guidelines/en/latest/esp32/index.html provide detailed instructions there are quite a few things that have to be done right for the board to work, and consequently most designs require multiple iterations.
Looks like adding the extra parts to an existing design is not possible due to limitations of available existing designs.
-
about 2 months ago by michals | Reply
Less random protection diode is SPV1001D40TR which an obsolete part and is in fact a device based on a MOSFET internally so a MOSFET based protection can be used instead https://components101.com/articles/design-guide-pmos-mosfet-for-reverse-voltage-polarity-protection. Less random overcurrent protection that is widely available is LM5069MM-2/NOPB which does use an external MOSFET as well. I think adding at least one extra MOSFET for reverse voltage protection is advisable, that's most likely connection problem.
Similar Projects
This project is one of its kind!