I just posted a new project on Hackster for my Photon based IoT low voltage lighting controller. I hope you enjoy it
Here’s some preview pictures…
- 12V DC input for use with LED lighting.
- On-board 5V regulator for Photon, USB power connector and NeoPixel LEDs.
- 4 Channel low side, high current (5-10ish amps) PWM FET control, Ideal for LED strips, motors, fans etc.
- NeoPixel drive from internal 5V or external for higher current (>500mA).
- On-board status LEDs for diagnostics.
- Switch input with software controllable power (e.g. push button with LED or a hall effect sensor).
- DC current monitoring.
- 5V voltage monitor (to allow for possible battery operation of the photon)
- High side switched 5V USB A connector (power output only).
- 5V PIR sensor connector.
- External light sensor (3.3v).
- On-board temperature sensor and connector for external DS18B20 sensors.
- I2C external connector.
- Links up with SmartThings. Control the lights with a SmartThings motion sensor or their app.
- Prototype area, connections available for 12V, 5V, 3v3, GND and all Photon pins.
- Photon powered (naturally )
I found the PCB to be really useful, not just for my kitchen lighting. Here’s a video of it being used in the development of a UV exposure box. It’s controlling a NeoPixel ring, a strip of UV LEDs, USB light, a 12V DC 80mm Fan (PWM’d to control the speed) and uses a hall effect sensor to trigger the different options, all whilst reporting power usage, PCB temperature and control state to the internet.