The Little Frog

A budget built FrogLite basic racing quad.

Frame construction

Assemble the two plates with the arms, make not that the longer arms are towards the front.
We only need 2 screws & nuts at the moment, (lock nuts down, longer screws up for esc and flight controller to mount on)
It also pays to fit the battery strop to before everything is put together.

Attaching the motors

Mount motors onto frame. I suggest using blue loctite for extra security.
Trim the wires to about half length, solder on additional 20AWG wire so they can reach your esc then heatshrink the joins

Fit the braided wire wrap and two lots of additional heatshrink for ends of wire mesh. (don't shrink it just yet)

Once the ESC is in place, cut motor wires to correct length, solder wires to ESC and then position the braided wire wrap.

Move heat shrink to each end of wire mesh and shrink.

This leaves you with a fairly tidy and ridget bundle of wires that don't need to be zip tied down.

At this point you will want to put your battery connector wires through the frame and solder them on. Add an optional low ESR capacitor to help with any noise. (I potted mine with two part epoxy to help with vibrations causing stress.

Wiring up the flight controller

Trim and join the ESC 8pin plug to the 7pin plug of the flight controller.

Snip the camera lead to a comforatble amount (40-50mm) solder to video in pin + power pins. make not of the power jumper and change to 10v if required.

Then trim the video tx lead to a similar length, and finally size up your recieve wire. The benefit of f.port really pays off here, three wires to get telemetry and 16 channels is excellent.

Position Peripherals

Now all the connectors are attached to the flight controller we will need to get everything mounted in the frame.

Assemble the top of the frame, screw in the camera, taking care to get it up the right way.
Then with some double sided tap stick the receiver in between esc and flight controller with antena lead towards the tail of the craft.

With some more double sided tap and cable ties stick the vtx so it points out the back of the craft.

Add heat shrink to the connector to stop it loosening and shorting with the carbon fiber frame

Notes

• The racerstar motor wires are too short out of the box.
• Heat shrink anything you think may short.
• Flash the latest beta flight firmware before you start.
• The camera fits in the frame perfectly, however if you mount the alumninium parts the wrong way it wont fit. (Found this out first hand)
• I had to take the flight controller off to mount the receiver in between, also make sure the wrap the reiver in heatshrink so nothing shorts out. Its probably a good idea to bind and set the receiver fail safe while its all apart.
• Don't put the top on before you power up and test your video, as its a pain to change vtx channels when fully assembled.
• Make sure you flash your reciever with the f.port version of firmware before assmebly.
• Check the direction of all motors, if you need to swap any Blheli-Configurator is the tool you want. I had some issues once I swapped a few esc directions and had to set ESC's to pwn restart then back to DSHOT600 to get it to work.

Betaflight Configuration Tweaks

Set gyro to the faster ICM20602

set gyro_to_use = SECOND
save

The reciever (X4R-SB - flashed with f.Port) firmware attaches to TX4 (near vtx)
Set Serial Rx on UART 4 (Ports tab) disable any other Serial Rx

Configure f.port via betaflight command line with the following

set serialrx_halfduplex = ON
set serialrx_inverted = ON
save

more info on fport

Motor mapping with 4 in 1 esc

Motors 2 and 3 are transposed. So we need to run the following commands more info here

resource list

take note of the numbers by MOTOR 2 and MOTOR 3 in this case we had C07 and C08 so we swap them with the following

resource motor 2 C08
resource motor 3 C07
save

There may be a warning about overlapping mapping, but after a save and reload the motors should be correctly mapped.
I strongly suggest powering off and then verifying this with the motor tab in betaflight with a battery so you can check motor directions etc. (no props to be safe)

Configuration Tab

Set ESC motors to DSHOT 600

System Config
Enable gyro 32k,
Set loop times to 16k/16k (as 32k results in 100% cpu)

Turn on Telemetry & Barometer
Enable dynamic filtering