# RRD Ramps 1.4 module

> The RRD Ramps 1.4 module is a 2-channel PWM expansion module for the Ramps 1.4 board, useful when there are no free PWM outputs left after a dual extruder upgrade or when adding fans, LEDs and other PWM-controlled accessories. It mounts directly on the servo pins, adds channels on D6 and D11, and supports up to 20VDC and 0.5A per channel. Compatible with Marlin by setting MOTHERBOARD 34.

- Page: https://sigmanortec.ro/en/rrd-ramps-14-module
- Price: 12.28 RON
- Availability: In stock; 1-2 zile
- Reference: 22045 · EAN: 5949495764712
- Category: Mechatronics and IoT > Shields and Expansion Boards
- Package (shipping data): 0.004 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:32 (Europe/Bucharest)

## Description

2-channel PWM expansion module for Ramps 1.4, ideal when after upgrading to dual extruder you no longer have free PWM outputs or you want to add fans, LEDs and other controlled accessories. Mounts directly on servo pins, adds channels on D6 and D11, supports up to 20VDC and 0.5A per channel, compatible with Marlin by setting MOTHERBOARD 34.
2-channel PWM expansion module (fans, LEDs, etc...), used when after upgrading to a dual extruder you no longer have free PWM channels or you want to add other components controlled via PWM. This module adds two channels on D6 and D11
It is installed directly on Ramps 1.4 at the servo pins
Max 20VDC
Max 0.5A per channel
Supported by Marlin (select "#define MOTHERBOARD 34")
See here for configuration details
Example code modified by us