Kitbot launch motors slow

The CIM motors on our kitbot hardly seem to be able shoot the note into the speaker… Battery is at 12.3 volts, pwm controller is set to 1.0 output in code. We’ve given time for the wheels to spin up and it’s just underwhelming. Any tips?

12.3 is a bit on the lower end for battery charge. A full 12V FRC battery will generally read somewhere around 13.5V.

That said, can you describe the mechanism (or provide pictures)? I’m assuming its the everybot shooter, but just want to confirm.

Can you post a video (or a link to a video)?

Expect more of a “lob” than a “shot”.

With the compression axis across the hole of the note, there’s not really enough wheel purchase on the note to get good energy transfer.

12.3 volts sitting there or with some load on the battery? Big difference reading battery voltage with 100 amps of draw vs a few hundred mA for rio and radio. (voltage sag, can sometimes be quite substantial)

Continuing the troubleshooting:
All connections/crimps etc solid? sometimes poor connections exist in a seemingly robust crimp or connector.

Thanks for the insight- I will try and post a video later. Yes it is the everybody launcher setup. We have checked our crimped connections and they are okay as well.

We had inconsistencies in our shots at a Week 0 event, and noticed our frame twisted a little, which caused the ploycarb sheets to warp and the note drag on it.

On our everybot it made a big difference when we added some washers to give a little more distance between the top and bottom polycarb panels.

1 Like

Readings around 13.5 are typically surface charge and go away pretty immediately under load in my experience.

1 Like

While wearing my scorekeeper hat I can see voltage telemetry for every robot on the field. Even when they first connect to FMS I rarely see 13V or over.