TB6612FNG Motor Driver
by Toshiba / SparkFun clones
SKU: PSA-CMP-TB6612
No reviews yetTypical India street price
₹120–₹250
Efficient MOSFET H-bridge — cooler and better for battery robots than L298N.
Interface: PWM + IN
H-bridge enable/direction often uses the motor overlay pins — mutually exclusive with LCD I2C.
Motor overlay uses D1 (and paired pins). Give motors their own battery.
Blockly: set_motor, motor_speed
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Concept
TB6612FNG is a MOSFET H-bridge motor driver — cooler and more efficient than L298N for battery robots.
A little theory
Low Rds(on) MOSFETs mean less voltage drop and less heat than L298 Darlingtons, so more of the battery voltage reaches the motors. Dual channels with PWM + direction inputs and a STBY pin. Logic from about 2.7–5.5 V works with both 3.3 V and 5 V MCUs. Continuous current ~1.2 A per channel with peaks higher — still not for huge gear motors. In the classroom, treat TB6612FNG Motor Driver as a intermediate part using PWM + IN. Typical India street price is about ₹120–₹250. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Wire VM (motor battery), VCC (logic), GND common. PWMA/B from MCU PWM pins; AIN1/2 and BIN1/2 for direction; pull STBY high to enable.
Classroom & project use
- Small 2WD
- Sumo
- Line follower
- Compact battery bots
Buying in India
Precautions
- Common GND
- Do not exceed VM rating
- Keep STBY high when driving
- Decouple VM with a capacitor
Specifications
| Current | 1.2 A cont / 3.2 A peak |
| Efficiency | MOSFET |
| Logic | 2.7–5.5V |
| Channels | 2 |
| Category | Drivers & Relays |
| Difficulty | Intermediate |
| Voltage | Motor up to 13.5V; logic 2.7–5.5V |
| Interface | PWM + IN |
Pinout
PWMA AIN1 AIN2 STBY BIN1 BIN2 PWMB | AO1 AO2 BO2 BO1 | VM VCC GND
