ESP32 to VNH7100BAS Connection Guide

flux

Yes — here’s a simple connection diagram for controlling speed + direction from an ESP32 DevKit V1 to a VNH7100BAS DC motor driver, with current sense unused.
Basic connection table

Table

ESP32 DevKit V1VNH7100BASPurpose
GNDGNDCommon ground
GPIO25INA / IN1Direction input A
GPIO26INB / IN2Direction input B
GPIO27 PWMPWM / ENSpeed control PWM
3V3Logic supply / VCC if requiredLogic reference, if the board exposes it
—VS / Battery +Motor supply voltage
—OUTAMotor terminal 1
—OUTBMotor terminal 2
—CS / Current SenseLeave unconnected if unused, unless datasheet/board requires resistor
—DIAG / EN / FAULT if presentOptional; can leave unused or pull up depending on board
Control logic

Table

INAINBPWMMotor action
00XBrake / off, depends on driver truth table
10PWMForward speed control
01PWMReverse speed control
11XBrake, depending on driver truth table
Text diagram 
Text
ESP32 DevKit V1              VNH7100BAS Motor Driver

GND  ----------------------  GND
GPIO25 --------------------  INA / IN1
GPIO26 --------------------  INB / IN2
GPIO27 PWM ----------------  PWM / EN

Motor Supply + ------------  VS
Motor Supply - ------------  GND

OUTA ----------------------  Motor terminal 1
OUTB ----------------------  Motor terminal 2

CS / Sense ----------------  Not connected
Important notes
  • ESP32 GND and motor supply GND must be connected together.
  • Use a separate motor power supply for VS; do not power the motor from the ESP32.
  • Put a large capacitor near the motor driver supply, typically 470 µF to 1000 µF, plus 100 nF ceramic close to the driver.
  • ESP32 PWM works well at around 10–20 kHz for motor speed control.
  • ESP32 GPIO is 3.3 V logic. Confirm your VNH7100BAS board/input accepts 3.3 V logic. Most ST automotive drivers do, but verify the exact module/datasheet.
  • If your breakout board has pins named SEL0, SEL1, EN, DIAG, CS, PWM, INA, INB, send the pin labels and I can map them exactly.
Map module pins
Add motor circuit
Check logic compatibility
Recommend ESP32 PWM
No schematic yet

Talk to Flux to get started.

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Tense Purple Battle Mech

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