Hi Daniel,

I have used the very common modules available on Ebay, the ones that show up as 'Linvor' by default. Could you give more information on the one you have?

If you just power them up, without even connecting them to a micro, they show up on an Android for sure.

And sure, they work great with pics. The range is a bit modest, though.

Remember they are 3.3 volt devices, unless you buy the ones mounted on a pcb with a 3.3 volt LDO, in which case they can be powered from 5 volts. The USART pins are still 3.3, though.