08-25-2025, 12:20 PM
Hey KRende, I just ran into the exact same as you using ESPHome for DMX. I've bought a few A6'es for this and gave them a quick spin only to discover there is no output.
When looking at the design documents (https://www.kincony.com/kc868-a6-hardwar...tails.html) and the datasheet it lists the MAX13487 chip being used for this (which is great and I've used it before). However in reality it comes with a MS2548, which is listed as a drop in replacement, but when you look for it there are plenty of posts where this was done leading to issues. (https://electronics.stackexchange.com/qu...ounterfeit for example). Going by the schematic from Kincony their design looks a lot like others (VCC to /RE and /SHDN) but I didn't validate yet. Unfortunately I have no other working MS2548 boards to compare to.
When I scope out the TX pin on the ESP32 with the ESPHome code roughly as above that works, and I get a clean DMX pattern. Nothing after the MS2548 as observed above.
@admin: Can you provide a code example which I can run to validate the hardware actually works?
When looking at the design documents (https://www.kincony.com/kc868-a6-hardwar...tails.html) and the datasheet it lists the MAX13487 chip being used for this (which is great and I've used it before). However in reality it comes with a MS2548, which is listed as a drop in replacement, but when you look for it there are plenty of posts where this was done leading to issues. (https://electronics.stackexchange.com/qu...ounterfeit for example). Going by the schematic from Kincony their design looks a lot like others (VCC to /RE and /SHDN) but I didn't validate yet. Unfortunately I have no other working MS2548 boards to compare to.
When I scope out the TX pin on the ESP32 with the ESPHome code roughly as above that works, and I get a clean DMX pattern. Nothing after the MS2548 as observed above.
@admin: Can you provide a code example which I can run to validate the hardware actually works?