SparkFun Forums

[brew]

I am interested in using a LiPo battery (3.7V?) to run an Artemis ATP with a variety of sensors attached. This would be in a weather balloon payload.

How can the battery be attached? The barrel jack seems to want 7-15 Volts. From other posts it sounds like VIN wants 5 volts, although that is unclear.

1) Can the battery be attached at VIN?
2) Can it be attached somehow to the coin cell area on the bottom of the board? I don't think the coin cell itself will last long enough at 250 mAH; I am hoping to use the 2 AH battery.
3) Is there a different mechanism I should use?

[rpiloverbd]

1)Actually the whole issue is confusing enough. The Artemis module itself can run at, 1.75V to 3.63V. But as the Artemis ATP board has the same footprint as Arduino Mega, it looks like the board will not get sufficient voltage if you power it up with a 3.7V lipo battery. At least this is what I can understand.

2) According to SparkFun's Artemis integration guide, 3.3V coin cell can be used just to power up the RTC. Artemis will be in deep sleep mode.

3)You can either use a rechargeable 9V battery with a 9V to barrel jack connector like this: https://www.sparkfun.com/products/9518
Another way is to connect two 3.7V Lithium batteries in series. Connect the battery pack to the barrel jack. Like this one: https://www.techshopbd.com/detail/2993/ ... bangladesh