Hi I have a question witch i cant find an answer on anywhere so i have to make this question. As i can see the Spark Core is running on 3.3V DC. Or can it also run on 5V as the Arduino ? When supporting the board without the USB power. On the GND and VCC connections. Does that mean the I/O ports…

It was my understanding that on the VIN it went through the Sparks voltage regulator to step it down to 3.3 v. Is that not the case?

Yes but are you powering the sensors with 5V or 3.3V?

I’m about to use the Spark core in a project where the RX/TX will connect directly to the TX/RX of a 5V Atmega. I could not, from the Spark documentaton, get a sense of whether the Spark RX pin is 5V tolerant. In one part of the docs it says pretty much all the pins except the analog ins and D2 can …

So does the shield shield convert everything so that the spark core is protected from over-volting? Or is it only the power into through the power supply, and not the power into the pins? Thanks!

It’s is protected by the Logic Level Converter IC used on the shield shield but always good not to have overvoltage conditions :slight_smile:

Ok, I know I’m going to smack myself after this, but where is the RAW Pin? Am I just blind or is it labeled something else?

The schematic calls it RAW, but it’s labeled VIN on the PCB.

[image] zach: The Spark Core can be fried (specifically the on-board voltage regulator) if it's provided voltage higher than 6V, but it has protection against high current draw, so it should be resilient to shorts. Hi zach, I similarly want to power my spark with a 5v/2amp power supply throug…

Hi @adellelin - yes a 5V/2A power supply would be fine, the amperage on a power supply is the maximum that can be drawn through it. Current is pulled, not pushed, and the Core won’t pull more than it needs unless you create a short circuit.

Sorry zach, I just realized you already answered the question. Thank you.

3.3V and 5V How to use on the Spark Core

Hardware

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3.3V and 5V How to use on the Spark Core

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