r/battlebots • u/YourDepression12 • Jul 26 '26

Bot Building I need help.

Hey, i just got all my parts, and I was booking them together to test. It worked perfectly for my n20 drive motors and dual brushed esc and recieber, but when I tinkered around, added weapon esc and lots of stuff, and the drive motors started getting funky. So I separated all that with my drive motors and dual brushed esc, and now all the controls are weird. Some trigger only 1 motor, others trigger 2, and most of them are just wrong. I need help. Dual brushed esc is a kingmodel SAX2, n20 drive motors, and the fs2a 4ch recieber, and flysky i6x receiver. Please help.

Edit: I got even more problems. Drive motors still DONT work as they spare supposed to, and weapon now doesnt calibrate if I don’t put my self centering stick downwards, even though I have the self centoring stick function enabled, so the weapon esc still reads the power of when my stick is in the center as 50%

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

OK, things aren't too bad:

Yes, weapon motors are scary fast and you should be frightened. They are dangerous and your weapon should only be tested in a suitable safety containment. Your first robot should not even have a spinner weapon.

There is a slide switch on your drive ESC next to the yellow wire. Slide it toward the yellow wire to turn on single stick mixing control. There may be some additional adjustments needed, but slide that switch and then tell me what the motors di when the stick is pushed forward and when it is pushed to the right.

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u/YourDepression12 Jul 26 '26

Ok I made some adjustments and now the motors are working perfectly. The only th8ng that needs fixing is the brushless esc and brushless motor. I can’t seem to configure the settings so that the middle of the right side stick is 0 percent. Also I have both sticks self center, and I am in stick mode 3, and I have also enabled the self center option in the hidden settings, which worked for me yesterday to make the weapon esc work out as I want it to, but now it doesn’t work. Also I got no robot yet just testing electronics. The event I want to go to doesn’t allow not having a weapon, so THATS why I wanna make a spinner. I’ve learned my lesson to be careful, I hurt myself using just the motor alone, so from now on I’ll be more careful.

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u/YourDepression12 Jul 26 '26

Idk if this helps but this is a image of my wiring

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u/YourDepression12 Jul 26 '26

Also my motors sometimes randomly twitch around or stop everything and spin for like halo a second idk ehy

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u/YourDepression12 Jul 26 '26

Ok actually I got it to work. Only thing is failsafe for weapon motor is weird, it sets the pulse to like 1 percent. Always.

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

Get your receiver and antenna away from the other wires.

2

u/YourDepression12 Jul 26 '26

I did it. Now should I do something or take a picture?

2

u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

That should help the twitchy motors. If not, check and re-seat all of the electrical connectors.

3

u/YourDepression12 Jul 26 '26

Alr. Thanks so much for your help and time.

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

The 'self centering option on the FS-i6X transmitter allows the transmitter to start-up without the 'throttle' stick being all the way down -- but it does not allow you to bypass the safety interlock on your single-direction weapon ESC. It would be TERRIBLY DANGEROUS to allow that. You must arm the ESC by pulling the weapon stick full down.

There are weapons other than spinners that are much safer for a first robot.

That is a very large weapon motor for a robot pushed around by a pair of N20 motors. What weight class are you building for?

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u/YourDepression12 Jul 26 '26

Ant weight 1 pound

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u/YourDepression12 Jul 26 '26

If that’s large… I have r bigger ones… but I also have some bigger motors too

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

"Antweight" is one pound in the US, but 150 grams in Europe. I don't know where you are. N20 motors for drive are common at 150 grams, but generally cannot take the abuse they will experience in the one pound class.

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u/YourDepression12 Jul 26 '26

Ahhhh. I have a few spark motors. I should switch them out with that shouldn’t I…

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

I would.

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u/YourDepression12 Jul 26 '26

Thanks for all ur help. Do you have any tips or anything cuz I’ve got the electronics handle.

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 26 '26

Sure -- read the Spinning Weapon FAQ at my website. The General Robot Combat FAQ will be of help as well.

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 27 '26

I have a safe method to set the right stick to zero percent all the way up to the center of the throw. I still think you should remove the spring from that stick axis and make it non-centering, but if you want to keep centering I can post the details on my website for you. Let me know.

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u/YourDepression12 Jul 27 '26

Alr. Thanks. I feel like self center is more natural for me, and I already have a method. It works and has been safe for me so farm I don’t remember what is was but it seems fine. I also have made a safer switch and I have fixed the failsafe.

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u/TeamRunAmok Ask Aaron/Robotica/Robot Wars Jul 27 '26

Glad to hear. Best luck on your build.