Solar Charger Shield

The solar charger is a stackable shield to Arduino compatible platforms, enables adaptive battery power and act as energy harvester for in-field charging. You may use various batteries just to shift up for 5V output, or put on Li-ion battery and solar panel to form an autonomous sensor unit.
Model:INT107D3P

Features

Change

Auto adjust charging current according to source capability
Designed for inconstant supply like solar panel
Optimized charging curve for Li-ion batteries
Charging status indicator

Supply

0.9-4.2V wide input voltage
5 VDC regulated output
Max 500mA output
Max 87% conversion efficiency
Build-in 1A over current protection

Application Ideas

Application1
Application2
Application3

Cautions

The warnings and wrong operations possible cause dangerous.

Schematic

Solar Changer Shield Scheme

Specification

Key Specification

PCB size	5.3 x 6.9 x 0.16 cm
Indicators	Charging ,complete
Power supply	4.4VDV-6VDC
Power Connector	Mini USB / JST
RoHS	YES

Charging

Specification	Min	Norm	Max	Unit
Input voltage	4.4	5	6	VDC
Low power threshold		3.7	3.9	VDC
Charge voltage	4.158	4.2	4.242	VDC
Precharge threshold	2.9	3	3.1	VDC

Power Supplying

Specification	Min	Norm	Max	Unit
Battery voltage	2.8	3.7	4.2	VDC
Output voltage	4.6	4.8	5.0	VDC
Output current	200	4.2	500	mA
Level up efficiency	70	80	87	%

Charging curve

Pin definition and Rating

Mechanic Dimensions

Usage

Hardware Installation

1. Stacked setup, put battery between the pin headers, please note the polarity while connecting the wires to the battery jac.
(Red to +, black to -).

2. Solar panel or other energy sources should be connected to PWR1, solar panel Jack.

Energy Source: (4V To 6V output)

5V Solar cell
Regulated Motor output
Rechargeable battery (3.7V To 4.2V)
Lithium Battery
NiMh Battery
Regular battery (from 2.8V to 4.2V)
AAA
AA

Programming

Includes important code snippet. Demo code like :

Demo code
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Example

The projects and application examples.

Bill of Materials (BOM) /parts list

All the components used to produce the product.

FAQ

Please list your question here:

Support

If you have questions or other better design ideas, you can go to our forum or wish to discuss.

Version Tracker

Revision	Descriptions	Release Date
Solar Charger Shield v1.0	Initial public release	May 01, 2010

Bug Tracker

Bug Tracker is the place you can publish any bugs you think you might have found during use. Please write down what you have to say, your answers will help us improve our products.

Additional Idea

The Additional Idea is the place to write your project ideas about this product, or other usages you've found. Or you can write them on Projects page.

How to buy

Here to buy Solar Charger Shield: http://www.seeedstudio.com/depot/solar-charger-shield-p-594.html?cPath=104_107

Resources

The resources need to be downloaded, like Eagle file, Demo code, project or other datasheet.

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.

External Links

Links to external webpages which provide more application ideas, documents/datasheet or software libraries