Table of Contents

• Description
• Features
• Specifications
• Pinout
• Modes
  • DC Motor Driver
  • Bipolar Stepper Driver
  • Lorren Ipsum
  • Pin / ID Default Assignment
• Dimensions & Mounting

Description

Lorren Ipsum

Features

• Dual H-Bridge motor driver (DRV8847SPWR)
• USB Type-C connector
• 2x LSS connectors allow for daisy chaining
• Unpopulated A3 pin under the USB Type-C
• LED (red): Tx-Rx USB serial activity (Tx & Rx)
• LED (green): Power LED (PWR)
• Arduino bootloader installed & Arduino IDE compatible
• Lynxmotion Smart Servo (LSS) mounting pattern
• Same form factor as the LSS - Power Hub / LSS-2IO Board / LSS-5VR Board

Specifications

• Microcontroller: ATMega328P
• USB-to-Serial IC: CH340E (Driver Download)
• Logic voltage: 5V
• Analog voltage: 5V
• 5V maximum current: 200mA
• Number of analog pins: 1
• Input voltage via LSS connector: 6V-12V
• Maximum rated current through LSS connectors: 2A
• Default baud rate in 2MC mode (with LSS-2IO Arduino program pre-loaded): 115200 

Pinout

Top External Pins
		Vin: Input voltage supplied by LSS bus (6V to ~12V)
		Ground (G): Common ground
		LSS Rx
		LSS Tx
		H-Bridge Output #1
		H-Bridge Output #2
		H-Bridge Output #3
		H-Bridge Output #4
Bottom External Pins
		Pin A3: Solder pad only
		5V Out: Low current output for sensor when used with A3
		Ground (G): Common ground
Internal Pins
	Pin D14: Controls the tri-state buffer (IC3) on the ATMega328P Tx serial line (pulled-down)
	Pin D7: Controls the tri-state buffer (IC4) on CH340E Tx / ATMega328P Rx serial line (pulled-up)
	H-Bridge Input #1: Arduino D9 pin
	H-Bridge Input #2: Arduino D10 pin
	H-Bridge Input #3: Arduino D3 pin
	H-Bridge Input #4: Arduino D11 pin
	H-Bridge i2c: SDA/A4 & SCL/A5
	H-Bridge NSleep: Arduino D2 high to enable
	H-Bridge NFault: Arduino D8

Power

		LSS Connectors: The board is meant to be powered from ONE of the two LSS connectors. Vin will supply the two on-board 5V regulators (logic and Vout) and to the Lynxmotion Smart Servos connected on the bus. Refer to LSS Voltage rating in LSS - Specifications
		USB: Connecting only the USB will only provide voltage to the logic. It won't power Vout rail nor LSS connected on the bus.
**NOTE:** USB and Vin power source are isolated and there are no issues connecting both a USB and a powered LSS bus at the same time

Modes

Lorren Ipsum

DC Motor Driver

Lorren Ipsum

Bipolar Stepper Driver

Lorren Ipsum

Pin / ID Default Assignment

The following pinout is used in the sample code so as to not interfere with any other guides or manuals. This pinout can be changed in the Arduino program.

Dimensions & Mounting