RPM Filter (Old)

How to enable bidirectional Dshot, it will let Beetle flying more smooth.

Offical Betaflight Wiki

Bidirectional DSHOT and RPM Filter

RPM filter will let beetle fly much better.

Enable RPM filter will lose LED function! on V1.0

Blheli_S ESC Setup

1 : Download the special firmware of ESC.

Link - J_H_30 ESC firmware for TransTEC 25A ESC. (16.9)

2 : Connecting the ESC to computer and then click Flash Other.

3 : Select the file previously downloaded.

4 : Click YES in the next steps.

Remember flash all of the ESCs

5 : Waiting for it flash done, and then click OK.

Complete the rest ESC in order. It will show ESC version and check if it is correct.

6 : Setup Blheli_S default parameter

Set start up power to 0.38. Set PPM Max Throttle to 1640.

Betaflight Configuration setup

1 : Open Betaflight Configuration and go to CLI.

If you want to keep LED blink, set the LED color first and then follow this guide.

2 : Type following command in CLI.

#resource LED_STRIP 1 none
#set cpu_overclock=120mhz
#save

Only TransTECF411 need type this CLI, TransTECF7 doesn't need.

3 : Go back to Betaflight Configuration enable Bidirectional Dshot.

Set the motor poles value to 12. (12 for 110X series motor)

4 : Set Betaflight Dynamic Notch Filter value.

Dynamic Notch Filter Range - MEDIUM Dynamic Notch Width Percent - 0 Dynamic Notch Q - 200 Dynamic Notch Min Hz - 90 For Betaflight - 4.1.X

#set dyn_notch_width_percent = 0
#set dyn_notch_q = 250
#save

For Betaflight - 4.2.x

5 : Check if the Bi-Dshot work correctly in motor tab.

It will show E: 0.00%, indicates that it works great.

Blheli_S ESC only support Dshot300 on RPM filter.

If it show E: 100%, means Bi-dshot doesn't work. You should check setting again.