Power your LED hoop with a single AA battery, rechargeable or alkaline. It can power 21 LEDs for about 3 to 4 hours and can be swapped out for a fresh AA at any time. Perfect for hooping off the grid, in the desert or on the road. Carry a few AA’s and you are set for hours of hooping. Swap batteries in a flash. Never wait for a charge again!
The basic kit includes one AA circuit module and one AA battery holder. You’ll need to solder the AA module to the switch, LED wires, and battery holder according to the diagram below. So this is not recommended for beginners or those who have not soldered before. Read full instructions before purchasing this kit.
If you want a kit that includes these 2 parts plus the connector, wire, and switch you will find it as option 2 on the Maker Kit page.
In order to swap out the battery you’ll need to open your hoop, so you will want to file down one end of the tube connector so it can be easily pulled apart, if that had not already been done.
NOTE: you must use a minimum of 7 LEDs in your hoop with this system. Connecting this system to fewer LEDs will over-drive your LEDs with too much current and damage them. So do not connect less than 7 LEDs even when you are first attaching you LEDs to your wire.
In order to check the 1st to 7th LED during your build you can use 2 or 3 AA batteries, a 3V lithium coin cell, or buy a used lithium test battery.
Click circuit diagram picture to enlarge.