If you have a pro Trinket You Probably Know It's the perfect Little Size For A-Project. This LiPoly Backpack makes it Really Easy To Do. Instead Of Wiring 2 now 3 boards together to make a system for this little PCB sits on top of the Pro Trinket and has LiPoly/Li-ion battery to plug in. When the pro Trinket USB port is powered, the battery is recharged automatically. Unplug the USB port and the pro Trinket will switch over to the rechargeable battery.
Ideally, this backpack is for use with the 3.3 V per drinket, so that the battery voltage (3.7 V-4.2 V) will get regulated down to 3.3 V on the pro drinking board. However, Many Times, You Can Run has 5 V per Trinket ACCESSORIES Off Of The ~ 4 V from the LiPoly Battery with no problem. (Technically ITS overclockable target We ve Never Seen That Affect The Pro Trinket itself, AVRs are happy to Overclock without Complaint).
Run the backpack man with the extra long header so that it can still plug into hat breadboard, gold clip the long header leads shorts afterwards for a slim package. There are Two LEDs - One Red and One Green. While for, the red LED is bed. When the battery is Fully Charged and Ready for use, The Green LED turns man. SERIOUSLY, IT Could Not Get More Easy.
If you want to add Jahr On/Off Switch, we also Made That really Easy. The Two 0.1 & # 34; holes with a box Around Them are the battery Output Line. Carefully cut the tracks between them with a hobby knife and replace with two wires from a switch like this slide switch, gold this pushbutton one, for example.
For is PERFORMED IN THREE Stages: First a PRECONDITIONING load, then has constant-current fast charging cable and Finally has constant-voltage trickle charging cable to keep the battery topped-up. The charging cable current is 100 mA by standard, so it will work with any size battery and USB port. If you want you can change it over to 500 mA mode by soldering closed the jumper on the bottom, for when you 'll only be for batteries with 50