LED-Warrior18 is a two channel PWM controller for control of LED stripes and other constant voltage LEDs via I²C with any I²C host controller. You can use every platform for control the LW18 (Arduino, Raspberry PI, STMicrochip, Atmel, and many more) which supports I²C interface as a host.
The LED outputs and VCC input are designed for terminal blocks, the I2C interface for a 4-pin header. You can solder the wires direct on the solder pads or install terminal blocks and headers. The modules come without terminal blocks or headers. The controller needs a 5 V supply from the processor side. The I²C is compatible with 3.3 V.
All information found in this page may be changed during the KICKSTARTER campaign.
The LW18 is designed to work with any plattform that has an I²C host function. In this repository you can find some sample projects for some of the most popular platforms.
With the IO-Warrior Dongles I²C dongle we deliver our own USB to I²C interfaces. With our SDK you can use the LW18 on Windows, Linux or OSX. For more information please visit out website.
The basic features of the LW18 module:
- I2C to dual PWM LED driver
- PWM output at 730 Hz
- 2 x 16 bit PWM ranging from 0.0015% to 100%
- 8 Bit data to log and lin mapping availabe
- Synch mode for controlling multiple units
- Broadcast mode
- Default power on status progammable
- Minimal external circuitry
- 5 V supply
The LW18 uses the I²C interface for communication. The basic 7-bit I²C address is 0x20, but can be changed by software. You can use multiple LW18 devices on the same I²C bus (max. 127 devices) by changing the device address.
Based on your platform you have to write/read the I²C commands via the appropriate API (i.e. for Arduino 'Wire.h', for Raspberry PI with python 'SMBus'). Please refer to the documentation of your platform.
The programming language can be selected based on your platform and preferences (C/C++, microPython, ASM).
If your platform does not have an I²C host included but has USB you can use our IO-Warrior Dongle to have access to I²C and the LW18.
| Register Address | Byte Count | R/W | Description |
|---|---|---|---|
| 0x00 | 1 | R/W | Command |
| 0x01 | 4 | R/W | 2 channel 16 bit PWM |
| 0x02 | 2 | W | 2 channel 8 bit PWM (LIN or LOG mode) |
| 0x03 | 4 | W | 2 channel 16 bit for PWM periode |
| 0xF0 | 6 | R | Signature |
| 0xFE | 2 | W | Set I²C address |
The LED-Warrior18 support linear (LIN) or logarithmic (LOG) conversion for 8 bit input values selected by controll register.
A detailed description of the registers will be in the datasheet of LW18 which is coming soon.
| Type | Rating |
|---|---|
| LED Voltage (PWM1/PWM2 relative to COMM) | +40V max. |
| Load sink current | 4A max. |
| Supply voltage (Vcc realive to GND) | 4.5V to 5.25V |
| Operation temparture | -40°C to +85°C)) |
| Supply current (for logic part) | 8 mA max. |
| Input low voltage | 0.8V max |
| Input high voltage | 2.1V min |
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Support this device on Kickstarter.
Datasheet for the LED-Warrior18.
Company site for information on more devices.