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Description
Pololu Dual MC33926 Motor Driver Shield for ArduinoThis shield makes it easy to control two brushed DC motors with your Arduino or Arduino compatible board. Its dual MC33926 motor drivers operate from 5 to 28 V and can deliver a continuous 3 A per motor. These great drivers also offer current sense feedback and accept ultrasonic PWM frequencies for quieter operation. The Arduino pin mappings can all be customized if the defaults are not convenient, and the motor driver control lines are broken out
This shield makes it easy to control two brushed DC motors with your Arduino or Arduino-compatible board. Its dual MC33926 motor drivers operate from 5 to 28 V and can deliver a continuous 3 A per motor. These great drivers also offer current-sense feedback and accept ultrasonic PWM frequencies for quieter operation. The Arduino pin mappings can all be customized if the defaults are not convenient, and the motor driver control lines are broken out along the left side of the shield for general-purpose use without an Arduino.This motor driver shield and its corresponding Arduino library make it easy to control two bidirectional, brushed DC motors with an Arduino or Arduino clone. The board features a pair of Freescale MC33926 motor drivers, which operate from 5 to 28 V and can deliver a continuous 3 A per channel, and includes current sense circuitry, protection resistors, a FET for reverse battery protection, and logic gates to reduce the required number of I/O pins. It ships fully populated with its SMD components, including the two MC33926 ICs, as shown in the picture to the right; stackable Arduino headers and terminal blocks for connecting motors and motor power are included but are not soldered in (see the Included Hardware section below).
This versatile motor driver is intended for a wide range of users, from beginners who just want a plug-and-play motor control solution for their Arduinos (and are okay with a little soldering) to more advanced users who want a dual MC33926 carrier that requires fewer I/O pins to control. The Arduino pin mappings can all be customized if the defaults are not convenient, and the simplified MC33926 control lines are broken out along the left side of the board, providing a convenient interface point for other microcontroller boards (see the right connection diagram below). This versatility, along with an option to power the Arduino directly from the shield, sets this board apart from similar competing motor shields.
Features
- Wide operating voltage range: 5 – 28 V 1
- Output current: 3 A continuous (5 A peak 2) per motor
- Inputs compatible with both 5 V and 3.3 V systems
- PWM operation up to 20 kHz, which is ultrasonic and allows for quieter motor operation
- Current sense voltage output proportional to motor current (approx. 525 mV/A)
- Motor indicator LEDs show what the outputs are doing even when no motor is connected
- Can be used with an Arduino or Arduino clone (through shield headers) or other microcontroller boards (through 0.1″ header along the left side)
- When used as a shield, the motor power supply can optionally be used to power the Arduino base as well
- Arduino pin mappings can be customized if the default mappings are not convenient
- Arduino library makes it easy to get started using this board as a motor driver shield
- Detailed user’s guide
- Reverse-voltage protection on motor supply 3
- Robust drivers:
- Transient operation up to 40 V
- Over-current limiting via internal PWM
- Over-temperature shutdown and hysteresis
- Under-voltage shutdown
- Output short-to-ground and short-to-Vcc protection
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4.3 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 1
Uncomfortable
Color: Light Beige, Size: 38DD
In my search for a comfortable well-fitting bra, I came across this one. Reviews were good, so I ordered one. Half way through the day, I had to take it off. This is the most uncomfortable bra ever. This one went on to the "uncomfortable pile" pretty quick
Not full coverage and not supportive. Side coverage is pretty good but straps are thin and do not lift.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Best Bra for Top Heavy Girlies!
Color: Light Beige, Size: 40C
I tried HSIA in the past but non of the bras fit right but this bra is the best! I’m glad I gave HSIA another chance because this is the best bra I’ve ever had! I’m already top heavy and doesn’t add extra bulk. It’s comfortable and breathable. In top of all that it’s affordable!
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Reviewed in the United States on April 25, 2026
★★★★★ 3
Much smaller cups
Color: Light Beige, Size: 36I
This has much smaller cups than indicated
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good Price, Great Bra
Color: Dark Pink, Size: 44G
These bras are outstanding! Both the band and cup size fit are exactly as they should. Having bottom heavy breast means I always have to have a underwire. Lace material with underwire can be tricky for us with larger bra sizes, as the underwire can be uncomfortable and the lace tends to be hard and scratchy on the skin. A beautiful garment can become uncomfortable and tear easily, if not made well. That has not been my experience with these bras at all. I have purchased them several times. The material is nice and softens after it has been washed. They maintain shape and hold well. For this quality and delicacy, I would normally pay upwards of $60 per bra. With these, I get great price, quality material and excellent comfort, style and fit.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Holy S*** this bra is amazing.
Color: Black, Size: 42G
I’m sure you are coming here reading reviews thinking “I don’t know. No bra has ever fit me right before. How will I know this bra is any different?” And let me be the first to tell you I was right there with you. I have been bra shopping for what feels like forever. For context I am a G cup and finding bras that fit nice seems like something I’d only find in my dreams. I have gotten bras from Torrid, Victoria Secret, Lane Bryant, Kohls, Walmart, you get the idea. Yes I know there are plenty of other sites but I don’t want to spend $80+ for a bra! Between them either hurting like hell from the wire, feeling like I was wearing a corset that was made for a door, or having absolutely no support/coverage, I contemplated just wearing no bra at all. I had such “luck” that I thought “maybe if I wear a sports bra all the time these problems would go away.” You guessed it! They in fact did not. I even tried no underwire and sure the wire pain was gone but good ol back pain came in at full swing. I would have constant issues with spillage and not feeling supported (and DONT even get me started on the uniboob)that I began to think I was the problem. Fortunately, a couple of days ago, I had discovered HSIA. I can’t stress enough to you how wonderful this bra is. It’s not only supportive but it’s also comfortable, breathable, and full coverage. And a added bonus: IT LOOKS AMAZING. This bra has changed my depressive outlook on bras to the most positive outlook. So much so I’m wearing this bra FOR FUN. 10/10 would recommend. It fits true to size. Straps are comfortable, no pinching. Under wire is very comfortable and does not dig into my rib cage. There is no padding, but still feels/looks great. Some shirts you can see the lace material but they have another bra that is smooth (I bought that one too) that fits just as great. I personally did not experience any itching like some other people were saying but I’d say just give it a try. If you made it this far reading this just buy it and see for yourself :)
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Reviewed in the United States on October 25, 2025