Boardoza DRV2605L Haptic Motor Driver Breakout Board

The Boardoza DRV2605L Haptic Driver Breakout Board is based on the Texas Instruments DRV2605L, a powerful and intelligent haptic motor driver designed specifically for ERM (Eccentric Rotating Mass) and LRA (Linear Resonant Actuator) vibration motors. Unlike simple on/off motor drivers, the DRV2605L integrates a built-in waveform library and smart-loop control engine to generate advanced vibration effects such as clicks, double-clicks, ramps, buzz patterns, and audio-synchronized feedback.

Unlike standard motor drivers for DC or stepper motors, the DRV2605 is optimized for ERM (Eccentric Rotating Mass) and LRA (Linear Resonant Actuator) motors. It communicates via I²C, allowing you to configure, chain, and trigger complex vibration patterns directly from your microcontroller. This breakout board is ideal for wearables, game controllers, touch interfaces, mobile devices, assistive systems, and any project that requires professional-grade haptic feedback.

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Front Side	Back Side

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Key Features

• I²C-Controlled Digital Playback Engine: Includes a waveform sequencer for flexible haptic pattern generation.
• Real-Time Playback Options: Supports control via I²C, PWM, or analog input.
• Dual Drive Modes: Operates in open-loop (ERM) and closed-loop (LRA) configurations.
• Smart-Loop™ Control: Provides automatic overdrive and braking for optimized performance.
• Automatic Resonance Tracking: Includes actuator diagnostics for LRA operation.
• Automatic Level Calibration: Ensures consistent output performance.
• Battery Voltage Compensation: Maintains stable operation under varying supply conditions.
• Differential H-Bridge Output: Features OUT+ and OUT− for driving actuators.

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Technical Specifications

Model: DRV2605L
Manufacturer: Boardoza
Manufacturer IC: Texas Instruments
Device Type: Haptic Driver IC
Functions: Smart Haptic Motor Driver
Input Voltage (VDD): 2.0V – 5.2V
Interface: I²C (Standard & Fast Mode, up to 400kHz)
Control Input (IN/TRIG): PWM / Analog / External Trigger (Selectable)
Supported Actuators:

• ERM (Eccentric Rotating Mass) – Open-Loop Drive
• LRA (Linear Resonant Actuator) – Closed-Loop with Auto Resonance Tracking

Playback Modes:

• Internal ROM Waveform Library
• RAM-Based Custom Waveform Sequencing
• Real-Time Playback (RTP) Mode
• Audio-to-Vibe Mode

Drive Output: Differential H-Bridge (OUT+, OUT−)
Auto Features:

• Automatic Overdrive & Braking
• Automatic Resonance Tracking (LRA)
• Automatic Level Calibration
• Actuator Diagnostics

Operating Temperature: -40°C to +150°C
Board Dimensions: 20mm x 20mm

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Board Pinout

( J1 ) Control & Power Connector

Pin Number	Pin Name	Description
1	VCC	Supply Input (2.0V – 5.2V DC)
2	IN	Multi-mode Input (PWM / Analog / Trigger). Connect to GND if unused
3	SCL	I²C Serial Clock
4	SDA	I²C Serial Data
5	GND	Ground

( J2 ) Haptic Motor Output

Pin Number	Pin Name	Description
1	OUT+	Positive Differential Output
2	OUT−	Negative Differential Output

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Board Dimensions

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Step Files

Boardoza DRV2605L.step

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Datasheet

DRV2605L Datasheet.pdf

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Version History

• V1.0.0 - Initial Release

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Support

• If you have any questions or need support, please contact [email protected]

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License

This repository contains both hardware and software components:

Hardware Design

All hardware design files are licensed under Creative Commons Attribution-ShareAlike 4.0 International License.

Software/Firmware

All software and firmware are licensed under BSD 3-Clause License.