SyRen 20A regenerative motor driver
Price: $74.99
Weight: 55g / 1.9oz
International Shipping: $2.50
This product has been replaced by the SyRen 25.

Product Description

The SyRen motor driver is one of the most versatile, efficient and easy to use motor drivers on the market. It is suitable for medium powered robots - up to 50lbs in combat or 180lbs for general purpose robotics.

Out of the box, the SyRen 20 can supply a single DC brushed motor with up to 20A continuously. Peak currents of 30A are achievable for a few seconds.

Overcurrent and thermal protection means you'll never have to worry about killing the driver with accidental stalls or by hooking up too big a motor.

With just one SyRen driver you can control a motor with: analog voltage, radio control, serial and packetized serial. You can build many different robots of increasing complexity for years to come with a SyRen. Owning two SyRens allows you to build differential drive (tank style) robots because they can work in tandem with built in mixing.

The operating mode is set with the onboard DIP switches so there are no jumpers to lose. The SyRen features screw terminal connectors - making it possible for you to build a robot without even soldering.

SyRen is the first synchronous regenerative motor driver in its class. The regenerative topology means that your batteries get recharged whenever you command your robot to slow down or reverse. SyRen also allows you to make very fast stops and reverses - giving your robot a quick and nimble edge.

SyRen has a built in 5V BEC that can provide power to a microcontroller or R/C receiver. The lithium cutoff mode allows SyRen to operate safely with lithium ion and lithium polymer battery packs - the highest energy density batteries available.

SyRen's transistors are switched at ultrasonic speeds (32kHz), meaning no one will be able to hear your robot ninja army approaching.

Use of our motor drivers with cheap AC adapters is not recommended. Use a battery or at least put a battery in parallel with a DC supply.

Servo pigtails are available here.

Product Specs

Model: SyRen 20
Specifications: Up to 18V in: 20A continuous, 30A peak
24V in: 16A continuous, 20A continuous with additional heatsinking/airflow, 30A peak

Synchronous regenerative drive
Ultra-sonic switching frequency
Thermal and overcurrent protection
Lithium protection mode

Input modes: Analog, R/C, simplified serial, packetized serial

Size: 2.4” x 2.3” x .8”
61 x 58 x 21 mm
Applications: Combat robots up to 50lb
Normal and hobby robots up to 180lb
Differential drive robots
Electric vehicles, ride-on toys, scooters

Easy speed/direction control for pumps, conveyors, automation and any application that uses a brushed DC motor
Documentation: SyRen10-20.doc (3.3mb)
SyRen10-20.pdf (2.0mb)
SyRen DIP switch wizard
Motor driver efficiency comparison
Sample RPM versus throttle graph
Application notes: Using a SyRen with an ATX (or similar) DC power supply

Controlling a SyRen with a BASIC Stamp II
Customer contributed projects: Simple Serial Mode test using PICBASIC

Simple Serial Mode controlled with a pot using PICBASIC

Interactive tour of SyRen

SyRen DIP switch wizard