Raw Voltage on Cypress

[DustinWyke]

does anyone know the raw voltage on the cypress PSoC 3?

[Mark McLeod]

3.3v using the default jumper settings.

[David Dawson]

Would that be enough to hard wire a few led's?

[kiettyyyy]

Would that be enough to hard wire a few led's?

It's quite easy to wire up a few LEDs.

I haven't seen many teams driving LEDs directly from the PSoC board without using the HC outputs.

968 developed a LED driver board that uses small power transistors to switch our LEDs. This allows us to drive multiple LEDs(5 of them) without going over the PSoC limits.

[manderson5192]

It's quite easy to wire up a few LEDs.

I haven't seen many teams driving LEDs directly from the PSoC board without using the HC outputs.

968 developed a LED driver board that uses small power transistors to switch our LEDs. This allows us to drive multiple LEDs(5 of them) without going over the PSoC limits.

My team is looking at wiring up a LOT of LEDs to its OI. I know the PSoC board is presently jumpered to give 5v and the LEDs are being driven directly from the digital outputs (I don't think from the high current (HC) ones). They're also looking to use some super-bright LEDs that I'm sure exceed the current-sourcing limit of the PSoC board.

So my real question: what is the BEST solution for wiring up a lot of LEDs on the OI?

[EricVanWyk]

So my real question: what is the BEST solution for wiring up a lot of LEDs on the OI?

How many, exactly? Are they all controlled independently?

[manderson5192]

If I remember correctly, they want to put a 7-segment LED display (or a row of LEDs) on to indicate the kicker "power level" they're requesting of the kicker (insert >9000 reference here...), individual LEDs to give camera feedback to the driver (one LED means they're aimed too far left, one means too far right, and a center one means they're ready to kick), a single LED to indicate that the kicker leg is wound and ready to release.

The idea of using "super bright" LEDs is that the driver doesn't need to wear an annoying, clunky HUD. Rather, it will be very obvious from peripheral vision and ambient light to know what the robot's state is (different color LEDs at different positions indicate different things).

[manderson5192]

An additional question: are we permitted to make an LED driver circuit, such that the cypress board sends a digital signal that turns the LEDs on, but they are powered from a small 12v battery on board the OI (I think this would required using a transistor)? I can't find anything in the rules that prohibits this, and I have a feeling this would be legal as per <R82>...

[Alan Anderson]

If I remember correctly, they want to put a 7-segment LED display (or a row of LEDs) on to indicate the kicker "power level" they're requesting of the kicker (insert >9000 reference here...), individual LEDs to give camera feedback to the driver (one LED means they're aimed too far left, one means too far right, and a center one means they're ready to kick), a single LED to indicate that the kicker leg is wound and ready to release.

Why not just use the Dashboard for all this? Our custom dashboard has a kick power meter (ours goes to 11), an "armed" indication, camera feedback with directional indicators, drivetrain status, etc.

The idea of using "super bright" LEDs is that the driver doesn't need to wear an annoying, clunky HUD. Rather, it will be very obvious from peripheral vision and ambient light to know what the robot's state is (different color LEDs at different positions indicate different things).

That scheme sounds like it would be very easy to put on the Dashboard.