globe motors

[arabsponsor]

Help!! Can anyone tell me if we can connect the globe motor to spikes instead of the speed controller?

[cdawzrd]

yes.

[JulieB]

any place where i find that in the rules

[jrocket567]

Im not positive.. i dont have the rule book in front of me right now, but I am 95% sure that ALL motors must be connected to the victors- no matter if you just need an on/off switch or a true speed control.

[cdawzrd]

that is not true.

only the fisher-price and CIM motors must be connected to Victors, as per the Electrical section rules:

http://www2.usfirst.org/2005comp/Sec...-The_Robot.pdf

<R78> CIM motors and Fisher-Price motors must be connected to Speed Controllers. They may not be
connected to Relay Modules.

[JulieB]

Originally Posted by cdawzrd

that is not true.

only the fisher-price and CIM motors must be connected to Victors, as per the Electrical section rules:

http://www2.usfirst.org/2005comp/Sec...-The_Robot.pdf

<R78> CIM motors and Fisher-Price motors must be connected to Speed Controllers. They may not be
connected to Relay Modules.

i need to know about the GOBLE

[cdawzrd]

since they only mention that CIM and FPs _must_ be connected, that means that other motors do not have to be connected. in short, you are fine connecting a globe motor to a spike.

[Joe Johnson]

I concur. Unlike in prior year's this year FIRST has not been as explicit as they have in past years about what can power what and which fuses with what motors, ect.

The closest they have come is listing two motors that a Spike CANNOT drive (namely the CIM and the FP). They have also said that you must use a 20A breaker with the Spike (probably to keep the contacts from welding closed on the Spike).

What is not forbidden is allowed. So... You CAN use the Spike to drive a Globe motor provided you follow the other applicable rules (wire gage, breaker size, etc.).

Joe J.

[jrocket567]

thanks for clearing that up- that will save us a couple hundred bucks buying more victors!!
j

[dez250]

Once again in 2005 FIRST has released an electrical diagram/schematic for use in aiding to your design. This document is located at http://www2.usfirst.org/2005comp/Dra...STRIBUTION.pdf. In this document it shows the Globe Motors connected to a victor for control. As the Spike Relays will work to control the Globe Motor that is included in the 2005 FRC KOP, I would highly recommend you though to use a Victor 884 to control the Globe motor.

[Cory]

Originally Posted by dez250

Once again in 2005 FIRST has released an electrical diagram/schematic for use in aiding to your design. This document is located at http://www2.usfirst.org/2005comp/Dra...STRIBUTION.pdf. In this document it shows the Globe Motors connected to a victor for control. As the Spike Relays will work to control the Globe Motor that is included in the 2005 FRC KOP, I would highly recommend you though to use a Victor 884 to control the Globe motor.

There's absolutely no reason to use a speed controller if all you need is for the motor to turn on and off. It's just a waste of money.

[sanddrag]

From Robot Section 5

<R78> CIM motors and Fisher-Price motors must be connected to Speed Controllers. They may not be connected to Relay Modules.

EDIT, looks like I got beat to it. Anyhow, window, globe, and van door may connect to relays.