Instructables
Picture of Arduino Solar FM Radio
cct.jpg
strip_design.jpg
stripboard.jpg
* Solar charging, via the panel on the back.
* 12 position switch to select channel number
* Seek up / seek down controls and 'store' button
* RDS display of call sign
* Frequency display
* Battery voltage display
* Solar charging current display

http://srmonk.blogspot.com/2011/09/arduino-solar-radio.html