ElectroCraze 20D-BD v2 – Dual Channel 20A Brushed Motor Controller

The ElectroCraze 20D-BD v2 is a high-power dual-channel bidirectional brushed motor controller for demanding RC and robotics applications. It delivers 20A continuous and 24A peak per channel from a 12–24V (3S–6S LiPo) supply and takes standard servo (PWM) signals from any RC receiver.

A 3-way hardware slide switch selects Normal, Mix or Mirror mode without any transmitter configuration. Combined with Invert Mode through a dedicated signal wire, it is well suited to combat robots, 4WD platforms and high-current ground vehicles. Signal loss protection stops the motors if the RC signal is interrupted, and the integrated 6V BEC powers your receiver without a separate BEC.

Key Features:- 

• Dual-channel 20A control: independent, mixed or mirrored control of two motors
• 24A peak per channel: handles high-current bursts without tripping
• 3-way hardware switch: Normal / Mix / Mirror mode, no transmitter setup needed
• Invert Mode: keeps drive direction consistent after the robot flips upside down
• Integrated 6V BEC: powers the receiver, no separate BEC required
• Signal loss protection: safeguards motors automatically on RC signal loss

Operating Modes:- 

• Normal Mode (switch in the middle): both channels work independently through servo cables 1 and 2. Use transmitter mixing if you need combined control.
• Mix Mode (switch to the left): a single throttle input drives both channels together, ideal for differential-drive robots even without transmitter mixing.
• Mirror Mode (switch to the right): servo cable 1 drives both motors together. Connect only servo cable 1 and reverse the Motor 1 wires so both wheels spin the same way.
• Invert Mode: assign a transmitter toggle switch to servo cable 3 to reverse the outputs after a flip. Works in Normal and Mix modes, not in Mirror mode. Leave servo cable 3 disconnected if you don't need it.

Note: Restart the controller after changing the switch position.

Applications:-

4WD combat robots • Differential drive robots • RC ground vehicles • Heavy robotic platforms • RC boats & crawlers • High-current custom builds

LED Indicator Guide:-

Wiring & Mode Setup:-

Full wiring diagram, channel assignment tables and transmitter stick layouts for each mode are in the datasheet PDF available in the Downloads tab on this page.

Important Usage Notes:-

• Check battery polarity before connecting power. Reversed polarity causes irreversible damage.
• Designed for 12V–24V only. Voltages above 24V cause permanent damage, so verify battery voltage before connecting.
• The board gets hot during use. Do not touch it right after running or place it near low-melting-point materials.
• Do not wrap it in insulating material; heat must dissipate to maintain rated continuous current.
• Keep conductive materials away from the PCB to avoid short circuits.
• In high-vibration builds, secure the heavy components (power capacitors) with silicone or epoxy.
• Compatible with 370/520 series and 550/555 series motors for light-duty use only.

Package Includes:- 

• 1 × ElectroCraze 20D-BD v2 Dual Channel 20A Bidirectional Brushed Motor Controller (with pre-attached wires and servo connectors)