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3 Feb 2012

This is a tiny, easy to make USB Lithium-Polymer battery charger. It’s based on the MAX1555 charger IC.

Tiny USB Li-Po battery charger - [Link]

6 Oct 2011

RGB LCD Arduino Intervalometer @ The Custom Geek. [via]

I am getting ready to sell some kits and wanted a good way to photograph the assembly without fumbling around trying to hold a camera in one hand and a project in the other. The answer? An intervalometer. A device that can send an IR signal to my Nikon, triggering the shutter. The video above explains all of the features including; automatic delay calculation, auto stop, multiple LCD and LED feedback options, Li-Po charging, FTDI headers, and manual control via button or plug-in foot switch.

This project will work with most Nikon DSLR cameras without changing anything, but can easily be adapted to work with Canon, Sony, or any camera that will accept an IR remote.

RGB LCD Arduino Intervalometer - [Link]

18 Oct 2009

l_dsc_0100

Alex at Tinkerlog writes:

For my latest projects I used a lot of single cell LiPo batteries. They are really nice. High power density, low self-discharge, no memory effect and they can deliver quite an amount of current. But LiPo battery handling is a bit more complicated than other rechargeable batteries. You have to take care of under voltage and over charging as that may destroy the battery.

I used the Sparkfun LiPoly charger, based on MAX1555, for some time and it works really well. The only thing I missed was a way to control the current. After some research I decided to try another chip, the Microchip MCP73833. [via]

LiPoly charging with MCP73833 - [Link]

15 Feb 2008

charger_2.jpg

This is a Li-Po charger and balancer project for R/C hobby.The charger circuit is based on the circuit of Electron head and all folks in the DIY electronics topic on the rcgroups.com. [via]

Li-Po charger and balancer - [Link]




 
 
 

 

 

 

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