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. Block Diagram
    2. Part Numbers
    3. Physical Specification
    4. Power Consumption
    5. 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

Specification

Block Diagram

View in fullsize

voxl-acc-mh-block-diagram.jpg

Part Numbers

Part Number Silkscreen Marking Description
MH-SA-2 M0048 REV A * Added proper power input connector (SM02B-SFHRS-TF)
* Moved to LAN7500 ethernet controller for better compatibility with Android
MH-SA-1 M0012 REV A Initial Release

Physical Specification

Specicifcation Value
Weight 12g
Dimensions 49 x 40mm
Antenna Connector ?? UFL-R-SMT-110
Recommend Antennas  
USB2 Host Connectors 4 Position JST GH, Vertical, BM04B-GHS-TBT
USB2 Host Mating Connector JST GHR-04V-S

Power Consumption

M0048 Configuration 5V Power Consumption (mA)
Baseline (USB Hub, Glue Logic, All LEDs ON) 315
Baseline plus Qty-2 USB Peripherals at Max 500mA* 1375
Baseline + Qty-2 DS USB* + Microhard 900MHz @ 10dBm 2800
Baseline + Qty-2 DS USB* + Microhard 900MHz @ 30dBm 3700
Baseline + Qty-2 DS USB* + Microhard 2400MHz @ 10dBm 2500
Baseline + Qty-2 DS USB* + Microhard 2400MHz @ 30dBm 3100

*For each of the two downstream peripherals removed from the hub, subtract 500mA plus ~30mA logic from the power requirement.

Inputs

External 5VDC input required. Included in the kit is the 5V Stand Alone Dongle Cable, v1 MCBL-00017.

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. A 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 Port4 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