Kk board restarting

[Phoenix.26]

When my motor 4 starts the whole circuit with the kk board restarts?

 

[mozquito1]

How do you know the board restarting

 

[Phoenix.26]

When the throttle is given at 60% the armed board tx light gets turned off.

 

[Jackson]

Which FW are you using? Did you do the ESC calibration?

 

[Phoenix.26]

i am using KK board 2.1.5 and fw is FS-CT6B. yes i did both esc and acc calibration.

 

[mozquito1]

Is this on the bench or have you tried to fly it properly. Try a quick punch out from a few inches upto about 10ft and see if it can get past the 60%.
The KK is an old FC
It was nearly my first but I got a naze although broke easy they where good at the time. Never heard of this since been on here. I know the KK is obsolete as the devs don't support it anymore along with all other F1 boards.
The only other thing I can think of is spikes from the main line.
Are you using any Capacitors on this build. Can you send a pic of your stack.

 

[Phoenix.26]

I am not using any capacitors

 

[mozquito1]

You should at least have one on the lipo pigtail.

 

[Phoenix.26]

Thank you for the information I will get back to you after I have tested it and can I get a circuit for it?

 

[mozquito1]

The cap needs to be above the battery voltage. I use 4S Lipo's so I use a 35v at 1000uf.
or for a 3S I use a 16v 1000uf mainly for my 130mm quads. But 4S is OK on this also.

 

[Phoenix.26]

I use an 4500mah battery with 11v

 

[mozquito1]

It may or may not fix it but I'd put one on anyway. Low esr capacitor is the ones you want

 

[Jackson]

KK board 2.1.5 and fw is FS-CT6B

That's your TX. The FirmWare will read something like 1.6.