The Wolf PDB v3 is the successor to the Wolf v1 and v2 and is the first hardware implementation to implement a graphical OSD

• 3S-6S battery input
• STM32L452 processor
• On-board current and voltage sensor
• 5V camera power
• 5V or 7.5V VTX power
• Tramp Telemetry and SmartAudio support
• Camera control
• GPS and Mag support
• LED strip support
• Microphone

The Wolf PDB is designed for the Reverb frame and mounts to the upper main plate using double sided silicone tape. The holes in the PDB are 6.6mm in diameter to fit around the outside of the press nuts on a Reverb frame and are located in a 30.5mm square.

Although it is something we haven't directly tried, it should be possible to adapt the Wolf PDB to mount in many other frames. To help you in making a decision as to whether this might work for you we have provided the physical outline of the board in DXF format. You should be able to print this out and test the fit.

Wolf DXF Outline

Warning: Because the PDB sits flush with the carbon plate on a Reverb the USB port is located close to the frame. We have found that in some rare cases certain USB cables have too much plastic around their connector to be inserted cleanly in to the Wolf PDB when it is mounted. Please take care and don't force anything! If you are in doubt, please try to find a USB cable which has less plastic around the connector.

The Wolf PDB has a single connector for communication with your flight controller and ships with a pigtail which allows plug and play operation with KISS V1 and V2 flight controllers. For Betaflight you can remove the connectors from the pigtail and direct solder the power, motor signals, serial port and optionally ESC telemetry wire.

NEW (V39.12 and higher): Direct CRSF and SBUS support. Remove the connectors from the pigtail and solder PDB RX to CRSF TX or SBUS (see Betaflight schematic below "To Betaflight FC"). CRSF users can optionally solder PDB TX to CRSF RX if you wish to receive battery and GPS telemetry on your radio. NOTE: This is intended for users that wish to use ImpulseOSD products on a wing or different FC (e.g. FlightOne, FalcoX etc.) that is not directly supported. If you use KISS or BF please connect the FC instead. GPS info will be forwarded to your radio telemetry automatically in that case.

The flight controller/receiver is automatically detected and configured, no interaction or settings are required to determine the type connected.

The Wolf PDB is only powered by the Lipo input pads and not via the USB port. To connect via USB and change settings using the desktop Config Tool you must also supply power via the Lipo input pads.

The Wolf PDB has dual cascading switching and linear regulators to clean up the noisy power coming from the input so that you get the very best performance from your camera and video transmitter.

The 3S to 6S Lipo input feeds a 7.5V regulator with a 2.5A capacity. This in turn feeds a 5V regulator with a 1.5A capacity. In out testing this is more than enough to power any standard FPV camera and video transmitter, as well as a GPS. We do not recommend powering extra devices from the PDB as you are at risk of overloading the regulators, this includes cameras such as the Runcam Split series which have high current requirements.

If you would like to ease the load on the 5V regulator and create some more headroom we recommend running an HV video transmitter from the 7.5V rail.

We strongly recommend that you power your VTX from the power outputs on the PDB, as well as also powering your camera directly from the dedicated camera power outputs on the PDB. Trying to power your video transmitter from Lipo power or powering your camera from the 5V output of your video transmitter can give undesirable results in certain situations.

If you experience slight video noise under throttle when running a 5V video transmitter you can power both your camera and video transmitter from the same 5V pads on the PCB rather than using their own separate 5V and ground pads.

The Wolf PDB is shipped with an electret microphone in the kit. This can be directly soldered to the pads at the front of the PDB, however the connection is sensitive to polarity. Please be sure to match the plus symbol on the microphone with the one on the PDB.

For the best audio performance it is highly recommended that you block the microphone from direct airflow. The preferred way to do this is by using a piece of open cell foam. Another method is to use one of the red plastic caps which commonly come as protective packaging on SMA connectors.

When the microphone is soldered to the PDB it should hang slightly below the PCB. This works perfectly well in the Reverb because of our split main plate design. If you are installing in another frame you can relocate the microphone somewhere more convenient using some short wires.

For classic camera control the Wolf PDB has a dedicated true analog output. This allows you to control the OSD embedded in your camera and change camera settings in the field.

We have also included a serial port specifically for the newer generation of camera with digital control. This includes controlling recording of the Runcam Split as well as many other camera via the Runcam control adapter.

To get the full video transmitter control features of ImpulseOSD it's important to connect your Unify SmartAudio or Tramp Telemetry wire directly to the PDB and not to your flight controller!

Please connect your video transmitter control wire to the TX pad of the dedicated VTX serial port on the PDB. The video transmitter is automatically detected and configured, no interaction or settings are required to determine the type connected.

The Wolf PDB has a comprehensive set of GPS enabled features that work across both KISS and Betaflight.

Given that KISS flight controllers have no native GPS support you should connect your GPS directly to the Wolf PDB.

For Betaflight boards you can connect the GPS either directly to the PDB or to your flight controller. The Wolf PDB will intelligently detect your configuration and display GPS data as usual. If you are not using any specific GPS enabled flight modes we strongly recommend that you connect the GPS to your PDB, this will enable the best performance of the OSD features as well as remove any extra processing load from your flight controller.

The Wolf PDB also supports GPS devices with an included Magnetometer. In certain situations this should give a more accurate and responsive home arrow and compass display, however all GPS related features are fully working without a Magnetometer connected.

The WolfPDB has two status LEDs. The green LED is directly connected to the 5V power and should always be lit when a lipo is connected.

The red LED should be flashing in a one second rhythm (we call it the "heartbeat"). That means everything is OK and the OSD loop is running normally.

If it does not flash or is off or on, the OSD loop does not run.

If it flashes in an irregular rhythm it is looking for a flight controller connection or the connection to the flight controller has been interrupted.