E15
WS28xx - MPX
Abstract: WS28xx compatible multiplex LED driver (charlieplexing) with fixed voltage.
Specs
This module implements a 12 channel WS2811 emulator to drive multiplex (charlieplexing) signals. The E15 may be cascaded with WS2811 (or compatible) chips. The E15 has same functionality as the E13 but with fixed voltage only.
Features,
- Variable (auto detecting) LED count [0..12]
- Fixed LED voltage [5V]
- 256 step PWM (300Hz) per LED
- Multiplex driver
- Gamma correction (optional via firmware)
- Connects to C30, C23 or C19 modules
- Fast firmware update via debug interface
Note 1: The hardware is identical to the C37 but running different software (ROM, Bootloader & Main).
Note 2: This module connects to the P18 adapter via a FFC cable.
Note 3: The E15 may also be used with other WS28xx compatible controllers such as MobaLedLib or BiDiB NeoControl.
The number of LEDs is detected automatically (n = number of detected LEDs which can be zero),
WS28xx bus: … {led_1} {led_2} … {led_n} …
Example
Here the E13/E15 module is used to drive multiplex signals. The C30 is a quadruple signal controller, each connecting to an E13 generating the Multiplex signal for the LEDs. Technically, the E15 can replace standard WS2811 chips.
Gallery
