MinOPOSD setup
Introduction
Some years ago Joerg-D. Rothfuchs (JR63) added UAVTALK protocol to minimOSD firmware to allow communication between MinimOSD and OpenPilot boards.The MinOPOSD is born.
Useful info still available in the following pages:
The OSD (On Screen Display) enables useful information to be superimposed on a video signal to an FPV pilot.
Connection diagram
Downloads
All OpenPilot and LibrePilot releases supported.
Description | Board supported | Analog inputs | Firmware file |
|---|---|---|---|
All analog inputs connected to OSD board. RSSI, Vbat, Current. MinimOSD or Micro KV Team Needed for CC3D who can't support current sensor. |
All boards | yes Rssi, Vbat, Current |
|
Nothing connected to OSD hardware, all information comes from flight controller. RSSI information comes from link quality UAVO. Voltage/current sensor can be connected to Revolution board, |
Revo only |
No |
|
Same as above Voltage/current sensor connected to Revo + analog RSSI connected to OSD. |
Revo only |
RSSI |
|
The config tool used for OSD configuration :
First time you update the MinimOSD board you may need the charset :
MinopOSD source code is here.
Hardware connections
All boards
Communication between flight controller and OSD is done using a serial telemetry at 57600bauds.
JST connector Main / Flexi port | Connector pin (board) | Description | MinimOSD |
|---|---|---|---|
 | 1 | GND | GND |
| 2 | VCC | +5V | |
| 3 | Tx | Rx | |
| 4 | Rx | Tx |
Please note Tx/Rx lines are crossed
Configure one port with telemetry at 57600bauds, can be MainPort or FlexiPort.
Revolution only
JST connector Revolution FlexiIO | Connector pin (board) | Description | MinimOSD |
|---|---|---|---|
 | 1 | GND | GND |
| 2 | VCC | +5V | |
| 7 | Tx | Rx | |
| 8 | Rx | Tx | |
| 9 (for programming) | DTR | GRN or DTR |
Two options are available for telemetry output on FlexiIO (receiver) port:
TELEMETRY or PPM+TELEMETRY
Programming setup
Using a FTDI device
Firmware upload
There is two chips on MinimOSD board, one is a Atmel 368P and the other is a MAX7456 (video chip)
This is a standalone application and so doesn't require further installation.
Start the config tool:
Update charset
Update firmware
OSD configuration
Video standard
Channel toggle
Channel toggle has two functions :
Allow screen switching between Panel1, Panel2 and a empty panel.
Enter Setup screen just after boot
Rssi setup
Battery settings
Panel setup
RC OSD setup
Refresh rates