2 ms·
A month of BT is going to require a pretty decent sized battery. (I seem to recall 4-5 mA idle, 40-50 mA while transmitting through one of those $40 BT modules
by joe_bleau 16y ago
A month of BT is going to require a pretty decent sized battery. (I seem to recall 4-5 mA idle, 40-50 mA while transmitting through one of those $40 BT modules.) Call it 10 mA average--you're looking at >7 Ah over a month. Assuming primary cells, that would be two C or D cells (actually, that's not too bad).
I think $5 is low. I'd guess more like $50 each for small quantity (<500) hand assembled in the US, using an off the shelf enclosure.
Does Apple even let you have access to the Bluetooth serial port profile?