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
Specification
Block Diagram
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
Board Connections and I/O
Top of Board
Bottom of Board
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