Are the voltage level from g120e compatible with arduino shields?
Of course it depends on the shield but most Arduino shields expect 5V levels. All current GHI products use 3V3 levels.
@ anthonys - The GHI modules are 5V tolerant.
GHI devices are 5v INPUT tolerant; they don’t necessarily output what a 5v module device on the shield may see as a digital 1, so you may need level shifting.
Careful. The G400 based modules such as the Raptor are not. They are max 3.6V according to the datasheet for the AT91SAM9X35.
You need to check the processor datasheet to confirm this as I see that GHI don’t list this feature anymore.
So what would be the general method to allow the connection to arduino shields? Would i need a level shifter for every pin?
The Fez Cobra 3 has no level shifting so does this mean, that not all arduino shields would work?
it means you need to know what each device is and what it needs. There’s no general rule.
Makes sense 