USB Power Controller

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Master Maker
Posts: 425
Joined: Tue Jun 24, 2014 8:25 pm
Location: Busselton

USB Power Controller

Post by parkview » Fri Mar 06, 2020 10:18 am

A string of LED fairy lights draw around 750mA. I haven't counted the number of LED's, but there is quite a few of them running in parallel. The ones we have don't do anything, they can be either off, or on, but they do look pretty. While you can buy controllers for them, I thought it might be fun to try and build my own controller for them. Ideally, they could be controlled via your mobile phone via the Blynk App.

Since I have been working on power monitoring, I thought I might as well throw some of that in as well. This is what KiCAD says the board will look like:
LED-String-USB-Controller-V1.0_PCB.jpg (195.47 KiB) Viewed 386 times
Since I have a level conversion chip in stock, I threw in a RGB Neopixel output port as well. This board will allow me to control up to 3 strings of 5V powered LED's. It does include a i2s powered MEMS microphone, so hopefully I might be able to have the strings of LEDs interact with the surrounding sound. There is also a 6DOF IC (accelerometer/gyro) included on the board to sense changes in rotation etc. This version of the board will need to be programmed via the serial port.

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