Chicklet Amps

[Fab.Master]

the reason we were asking was because the rules state it can be powered by any 7.2 volt battery and I wanted to make sure that a 4200mah battery would fry a $120 chicklet because our mentor would kill me

[whytheheckme]

Originally Posted by Fab.Master

the reason we were asking was because the rules state it can be powered by any 7.2 volt battery and I wanted to make sure that a 4200mah battery would fry a $120 chicklet because our mentor would kill me

Nah, as long as the voltage is right, you won't fry anything. Even if it couldn't supply enough current, it wouldn't break anything.

Jacob

[Al Skierkiewicz]

Originally Posted by Fab.Master

I wanted to make sure that a 4200mah battery...

That's a really big battery to have at the player station.

[Mike Copioli]

The 500 mA current rating on the Chicklet matches the USB spec. The actual current draw varies based on the device being connected. Of all the supported devices, the Microsoft mouse draws the most current at 100mA. You can use as large of a battery as you wish so long as the voltage does not exceed 15 volts DC. Voltages higher than 15VDC cause excessive heat and could damage the Chicklet.

[whytheheckme]

Originally Posted by Mike Copioli

The 500 mA current rating on the Chicklet matches the USB spec. The actual current draw varies based on the device being connected. Of all the supported devices, the Microsoft mouse draws the most current at 100mA. You can use as large of a battery as you wish so long as the voltage does not exceed 15 volts DC. Voltages higher than 15VDC cause excessive heat and could damage the Chicklet.

I made this mistake the other day.
http://www.chiefdelphi.com/forums/sh...40&postcount=3

While you most certainly could use a 7.2-15v battery, it would not conform with the rules:

Originally Posted by GDC - The Robot
<R106> Devices connected to the joystick ports of the Operator Interface via a FIRST-approved USB adapter (the only approved USB adapter is IFI Part Number USB-CHICKLET) are excluded from Rule <R105>. If used, this USB adapter must be powered with a 7.2V battery functionally identical to the back-up battery. Power from the competition port or any other source shall not be used to power the USB adapter. The USB adapter must be positioned within the OPERATOR CONSOLE so that the indicator lights may be seen during inspection and operation in a MATCH.

*sigh*

Jacob