ModalAI Technical Docs
Search

Microhard USB Carrier Board

There are two configurations for the VOXL Microhard kits.

  • VOXL Add-on that plugs directly into VOXL’s board to board connector
  • Standalone USB Dongle

This datasheet describes the standalone USB dongle. Microhard Add-on information can be found in this Datasheet

Table of contents

  1. Specification
    1. Inputs
  2. Pictures
    1. Assembled with Cabling
  3. Board Connections and I/O
    1. Top of Board
    2. Bottom of Board
    3. USB Connections
    4. LEDs
    5. CFG Switch
  4. Slave Configuration
  5. Pairing Microhard Modems

Specification

voxl-acc-mh-block-diagram.jpg

Inputs

Pictures

Assembled with Cabling

mh-sa-assembled.png

Board Connections and I/O

Top of Board

ma-sa-top.png

Bottom of Board

ma-sa-bottom.png

USB Connections

You can connect up to two USB-clients to the USB2 Host ports on the top of the board. An MCBL-00009 cable can be used, this is a 4-pin JST to USB Female Type A cable.

You can connect the carrier board to a host computer using the USB port on the bottom of the baord. An MCBL-00006 cable can be used to connect to a host comptuter (4-pin JST to USB) or the MCBL-00010 stub cable, which is a 4-pin JST to microUSB female cable.

LEDs

Index LED Description
1 TX Flashes GREEN indicating wireless TX traffic
2 RX Flashes GREEN indicating wireless RX traffic
3 RSSI-3 Flashes GREEN to indicate the Received Signal Strength on the wireless link
4 RSSI-2 Flashes GREEN to indicate the Received Signal Strength on the wireless link
5 RSSI-1 Flashes GREEN to indicate the Received Signal Strength on the wireless link
6 CPU Solid BLUEindicates power to module and normal operation, flashing indicates boot or FW upgrade status
7 LAN TODO
8 LAN/100 TODO
9 LAN/ACT TODO
10 5V Illuminates solid GREEN indicating 5VDC USB bus power enabled
11 Port3 Illuminates solid GREEN indicating Port 3 USB power enabled
12 Port3 Illuminates solid GREEN indicating Port 4 USB power enabled

CFG Switch

Can be used to reset all settings to default values required for a Slave module.

Slave Configuration

To reset all settings to the default values required for a Slave module, press and hold the CFG Button, once the CPU LED begins to flash, continue to hold for 5 seconds, then release.

The module will then reset all settings to the default values required for a Slave module

Pairing Microhard Modems

microhard-config is a command line utility for Microhard modem configuration. Usage of this script enables communication between Master and Slave Microhard modems.

microhard-config and its usage instructions can be found at: https://gitlab.com/voxl-public/microhard-config