Is there a library which contains the python code on how to communicate with this device?

For this product, we only have library for Arduino https://github.com/CytronTechnologies/CytronMotorDriver. However, we have made a tutorial for a similar motor driver (1Amp dual channel) using the phtyon code https://tutorial.cytron.io/2019/03/06/getting-started-with-maker-drive-and-raspberry-pi/. Please check if it helps.

Why is there an asterisk for the direction? from the graph does it not say that if you set dir to high then it goes forward and low then it goes back

Forward or backward is just a representation. Actual direction is depending on the motor connection. i.e. reverse the motor's wire terminals at the board (MA & MB) will reverse the motor spinning direction. Thank you.

I see that you have a arduino library, has it been tested or work with esp8266 or esp32?

Although we are not tested on esp8266 or esp32, but it is compatible. Just make sure the correct pin for PWM and DIR is selected

Does this board have diodes (for reverse current) to take care of back emf from the dc motor?

The MOSFET already has the diodes built-in. This motor driver is a regenerative motor driver and the energy generated by the motor during deceleration will be pumped back to the power source. Make sure a rechargeable batteries is used to power the motor driver so that it can absorb this regenerative energy.

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Cytron 20Amp Bi-Directional 6V-30V DC Motor Driver Speed Controller 60A Peak

Cytron 20Amp Bi-Directional 6V-30V DC Motor Driver Speed Controller 60A Peak

Product ID: 118008162

Details

Brand
Cytron
Color
Black
Material
Plastic
Plant or Animal Product Type
plant
Recommended Uses For Product
Automation

⚡20A continuous current

🔄Bi-directional motor control

🌡️Temperature & undervoltage protection

₨999

Duties & taxes included

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Description

⚙️ Drive Smarter, Not Harder — Power Your Projects with Precision!

PLUG PLAY TESTING - Onboard test buttons and motor output LEDs let you verify functionality instantly without extra setup.
BUILT TO LAST PROTECT - Active current limiting, temperature protection, and undervoltage shutdown safeguard your motor and driver from damage.
UNIVERSAL COMPATIBILITY - Works flawlessly with Arduino, Raspberry Pi, PLCs and supports 1.8V to 12V logic inputs for versatile integration.
SEAMLESS DIRECTIONAL CONTROL - Bi-directional H-Bridge design enables precise forward and reverse motor operation with ease.
POWER THROUGH WITH CONFIDENCE - Supports 6V-30V motors delivering up to 20A continuous and 60A peak current for high-performance applications.

The Cytron 20Amp Bi-Directional Motor Driver is a robust speed controller designed for brushed DC motors operating between 6V and 30V. It delivers continuous 20A current with 60A peak capacity, featuring advanced protections like overcurrent limiting, temperature shutdown, and undervoltage lockout. Compatible with popular microcontrollers via PWM and DIR inputs, it offers easy testing with onboard buttons and LEDs, making it ideal for automation, robotics, and high-demand motor control applications.

Specifications

ASIN	B07NP6XNPR
Best Sellers Rank	#230,466 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #208 in Motor Speed Controllers #1,337 in Tool Sets (Tools & Home Improvement)
Customer Reviews	4.9 4.9 out of 5 stars (23)
Date First Available	February 12, 2019
Manufacturer	Cytron

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