LED Dimmer
Operation Principle
A LED light in a form of LED strip or a 12V LED lightbulb can be connected to each channel. Upon connection, each of the channels can control brightness individually, via the Home Assistant Web interface, or as a part of automation.
Depending on light type connected to the module different behavior can be achieved. For example, if you connect a 5 meters of 12V RGB LED strip, you can control its color and brightness, as well as use it in scenes and setup various effects like rainbow transition.
Please note, this module can control traditional single-color, CWWW and RGB lights, but can not control digital addressable LED strips such as Neopixel. If you would like to control addressable LEDs please see Addressable LED Module.
Design Features
Power line is disconnected from the digital (module) power line.
It is possible to connect a total of 8 LED dimmers with 8 channels each which gives capacity of 64 dimmer channels to a single Unit module. The I2C address selection is performed with an on-board micro switch.
LED strips are connected with a common +12v with the module acting as a sink to the ground. Moreover, load power line is disconnected from the digital (module) power line.
Efficient (low Rds) output MOSFETS to ensure best thermal design and dissipate less heat during operation.
What's inside
Specifications
| Property | Description |
|---|---|
| Mount | DIN-rail mounted enclosure, 3-unit width (52.5mm) |
| Communication Interfaces | I2C |
| Chip | PCA9685 PWM Driver. 12-bit resolution (4096 steps), 46 Hz to 1526 Hz PWM frequency |
| Power | DC 12V separate line for LED power, 2-pole, ground only. 2 poles are connected together to enable module power chaining |
| Interface Terminals | 2x module interface: I2C+Power via standard JST 4-pole cable (opposite) |
| LED Strip Load Terminals | 2x 4-pole spring 2-part connectors for driving LED strips and lights |
