MATEKSYS VTX-Mini Video Transmitter 5.8G User Guide

June 6, 2024
MATEKSYS

MATEKSYS logo Video Transmitter 5.8G VTX-mini
QUICK START GUIDE

40CH(A/B/E/F/R Band), E4 & E8 are disabled by default.
Any Frequency/band can be disabled or enabled by CLI command
Variable Output Power: PIT, 25, 200, 400, 800mW
Button control and LED indicators
CMS control(Tramp protocol) via FC Uart _Tx
Switchable VTX input power via FC PINIO
Constant full frequency band power
Clean powerup and frequency switching
Built-in microphone
Upgradeable firmware
Convertible 20 to 30mm mounting
Input voltage: 6~36V(2~8S LiPo)
5V Output: 1A for Camera or FC
Power Consumption: 3.5W@ 800mW
Video-Input Impedance: 75 Ohm
Audio Subcarrier Frequency: 6.5 MHz
RF Connector: MMCX
Video Format: NTSC/PAL
Weight: 4.5g (VTX-mini only, w/o antanna)
Size1: 28284mm w/20mm_Φ3mm mounting
Size2: 36365mm w/30.5mm_Φ3mm mounting
Includes
1x 5.8G Video transmitter VTX-mini
1x MMCX 5.8G whip antenna, 8cm
1x 20mm to 30.5mm conversion plate

LAYOUT

MATEKSYS VTX-Mini Video Transmitter 5.8G-layoutIN: 6~36V DC (2~8S LiPo)
G: Ground
5V: onboard 5V regulator, output 1A for camera and FC.
Vid: Video signal
Tlm: CMS control(Tramp protocol) via FC Uart_TX
PINIO: VTX power switch via FC PINIO
Aud: Audio(A6.5) input, onboard microphone share this rail.
TX/RX: for flashing firmware and VTX firmware setting

Frequency Table (MHz)

OSD LED 1 2 3 4 5 6 7 8
BOSCAM A A 5865 5845 5825 5805 5785 5765 5745 5725
BOSCAM B B 5733 5752 5771 5790 5809 5828 5847 5866
BOSCAM E E 5705 5685 5665 5645 5885 5905 5925 5945
FatShark F 5740 5760 5780 5800 5820 5840 5860 5880
Raceband R 5658 5695 5732 5769 5806 5843 5880 5917

*** E4(5645) & E8(5945) are disabled by default.

Frequency Selection (Button)

MATEKSYS VTX-Mini Video Transmitter 5.8G-Frequency
SelectionPress Button A to select the Group, Press B to select parameters in each Group.
When LED blinks, Group & parameter can be changed
New Frequency & Power will be saved if no button action within 5 seconds.
The VTX remains the current frequency until new setting is saved.
PIT mode: Press B to enter PIT mode(1mw output), Pit LED blinks
Press B again to quit PIT mode

PINIO Power switch

MATEKSYS VTX-Mini Video Transmitter 5.8G-PINIO Power
switch

Any unused RX/TX/motor/PWM pad can be remapped for PINIO in BetaFlight
e.g. F405-CTR TX3 is used for CMS control, connect PINIO pad to RX3 of F405-CTR

MATEKSYS VTX-Mini Video Transmitter 5.8G-ctr

CLI resource to locate RX3 pin name
RX3 pin is C11 then
resource SERIAL_RX 3 none
resource PINIO 1 C11
set pinio_box = 40
save

MATEKSYS VTX-Mini Video Transmitter 5.8G-esource to
locate

Go to the modes tab and Assign an AUX channel to the USER1 mode. Click SAVE.
Flip the switch and test

MATEKSYS VTX-Mini Video Transmitter 5.8G-switch and
test

Tips
If FC has PINIO power switch built-in, e.g. F722-SE, F722-mini, no need to use this VTX PINIO function.
VTX PINIO would cut 5V output, so don’t power your FC via the VTX 5V pad if you want to use this function.

CMS control

Protocol: Tramp(TR)
*** CMS would override the button control if CMS control is enabled.

TR power level vs VTX power level
TR PIT — VTX PIT
TR 25 — VTX 25mw
TR 100 — VTX 200mw
TR 200 — VTX 200mw
TR 400 — VTX 400mw
TR 600 — VTX 800mw

MATEKSYS VTX-Mini Video Transmitter 5.8G-CMS control

CLI
vtx_low_power_disarm = OFF
Allowed values: OFF, ON, UNTIL_FIRST_ARM
If ON and the flight controller is disarmed, the video transmitter output power will be set to 25mw
Otherwise, the video transmitter output power will be set to the configured value.

VTX CLI command

MATEKSYS VTX-Mini Video Transmitter 5.8G-VTX CLI
command

  1. Connect VTX TX/RX to one of FC UART VTX RX to FC TX, VTX TX to FC RX, Common ground

  2. Connect FC USB to your computer

  3. Connect FC to BF configurator

  4. Power ON VTX

  5. Type Serialpassthrough code in CLI & press the keyboard “Enter”
    If using the FC UART1, Type “Serialpassthrough 0 115200” ……
    If using the FC UART6, Type “Serialpassthrough 5 115200”
    *** Following command is in VTX firmware,
    It is not related to BF commandMATEKSYS VTX-Mini Video Transmitter 5.8G-VTX
CLI command 1

  6. Type “help” after FC forward the port

  7. Type “config list” to check VTX setting
    E4_5645 and E8_5945 are disabled by default

  8. Type “set freq 5645 = enable” to enable E4
    Type “set freq 5945 = enable” to enable E8

  9. You can also enable/disable whole band e.g. “set band A = to disable”

  10. If Freq/band is disabled, button control will jump over it.

  11. Unplug USB & battery, Serialpassthrough mode will be invalid.

MATEKSYS VTX-Mini Video Transmitter 5.8G-2

Firmware Update

USB-TTL module

MATEKSYS VTX-Mini Video Transmitter 5.8G-Firmware
Update

  1. Set VTX power output to 25mW
  2. Connect VTX(5V/G/RX/TX) to USB-TTL module(5V/G/TX/RX)
  3. Connect USB to your computer, make sure USB-TTL PC driver is installed
  4. open MatekConfigurator.exe
  5. select the COM port of your USB-TTL module
  6.  Click “Connect”
  7. Once connected. CLI will display “Bootloader version:…….”
  8.  Click “OpenFile” , then select “vtx_mini_app_v1.x.x.bin”
  9. Click “Upgrade”
  10. Once new firmware is uploaded, new firmware version will display in CLI

MATEKSYS VTX-Mini Video Transmitter 5.8G-
MatekConfigurator

FC Serialpassthrough

MATEKSYS VTX-Mini Video Transmitter 5.8G- FC
Serialpassthrough

  1. Connect VTX_RX to FC spare UART_TX,
    VTX_TX to FC spare UART_RX
    VTX power(IN and G) to power source on FC

  2. Connect FC USB to your computer

  3. Connect FC to Betaflight configurator

  4. Power ON VTX

  5.  Type Serialpassthrough code in CLI & press keyboard “Enter”
    If using FC UART1, Type “Serialpassthrough 0 115200”MATEKSYS VTX-Mini Video
Transmitter 5.8G- press keyboard……
    If using FC UART6, Type “Serialpassthrough 5 115200”

  6. Keep USB connected to PC, Disconnect Flight controller from configurator

  7. open MatekConfigurator.exe

  8. select COM port of your Flight controller

  9. Click “Connect”

  10. Once connected. CLI will display VTX “Bootloader version:…….”

  11. Click “OpenFile” , then select “vtx_mini_app_v1.x.x.bin”

  12. Click “Upgrade”

  13. Once new firmware is uploaded, new firmware version will display in CLI

  14. Power cycle to exit Serialpassthrough

References

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