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***IMPORTANT***  Without soldering anything to the board, please apply power to the board using alligator clips and make sure the Green LED is on. Contact us immediately if green LED doesn't turn on! Return and Warranty claims are only considered on units that have not been soldered! Do not connect the RROSD 5V connector to any external voltages, doing so will destroy the RROSD

The RROSD PRO PDB is an all-in-one mini OSD-PDB board (36mm x 36mm) designed for the mini-quad community. On top of all the all the must-have features that we feel every mini quad should have, we are introducing a brand new feature that’ll make fpv quad racing even more fun, the lap counter. 

Download the manual here!

Follow the RCGroups forum here!


  • Dimension 36mmx36mm (30.5mmx30.5mm mouting holes)
  • Built-in power distribution and regulators to handle 3S - 6S Lipo
  • Built in multi stages power filter for Video Transmitter and Camera with pre-installed conveniently located connectors
  • 12V and 5V output: can be used for FPV cam and accessories
  • NTSC and PAL can be easily selected using the onboard button
  • Plug and Play (PnP) OSD information: Flight pack voltage, current draw, total current consumption, RSSI, flight timer
  • Maximum motor current 100A total
  • Automatic flight timer shows actual flight time
  • Additional lost model buzzer sounds off 5 minutes after the quad has crashed
  • Auto RSSI detection (FRsky and analog compatible), displays in percentage
  • Battery pack alarm feature blinks the battery voltage when pack voltage hits the set limit
  • Onscreen menu allows user to calibrate pack voltage reading, rssi input, battery alarm level…etc....
  • Firmware upgradable through FTDI (optional programmer is needed)

 Optional Features:

  • Lap counter
  • Lost model siren (buzzer is required)

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