i’m currently working on a Fuse Box for SK6812 LED Strips, since all of the 15m Strips would at full brightness end up using 38,4A i’m going to seperaten them into 2m pieces each which and end up with 4.8A per Trace and Wire.
My Idea behind the Box is that i’m going to use a Wemos D1 mini which monitors the Voltage and current of the 8 LED Strip Lines and shuts down the line as soon as it hits 4.8A with a Relay the Fuses behind it, are just a Fallback and Fast Blow 5A Fuses.
Also i tryed to at least do all of the traces that are Ground to the Bottom of the PCB to do a mass fill later.
I think most of the traces should’nt be a Problem but i’m still running into 2 issues.
I don’t know how i’m going to measure the 5A since the limit of the INA219 is 3,2A i did a sketch using a ATiny and a ACS712T but that one is limited to current measure and i don’t know if i can just put one of the ATiny Pins on the Phase or not.
I’m still confused because originally i wanted to use SSR Relays to shut down the Lines but now i have read somewhere that it’s not so easy if you are using DC Current like i do. And Heat will be a big Problem… So i’m a bit lost there now.
Everything else should be straight forward the 74hct245 is a logic level shifter to stabilize the DIN on the Strips.
PCF8574 is a bus expander to control the relays and the TCA9548A is a i2c expander which was orginally for the INAs.
I also asked the some questions on the fastLED and Teensy forum but… Someone i want get any help there.