Pages: [1]   Go Down
Author Topic: analog read solar cell  (Read 698 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Newbie
*
Karma: 0
Posts: 13
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I would like to use the analog read on the arduino to measure the voltage from a usb pocket solar charger.
Would connecting the solar charger directly to the analogread could damage the arduino?

I think voltage of the solar charger is 3.3 - 5v and max current 500ma.

basically I want to point a laser at the solar cell and when it reaches a certain threshold {do something}.

charger like this
http://www.ebay.co.uk/itm/Solar-Battery-Panel-USB-Charger-for-Cell-Phone-MP3-PDA-/320671026383?pt=UK_MobilePhones_MobilePhoneAccessories_MobilePhoneChargers&hash=item4aa97b8ccf#ht_3733wt_1396
Logged

0
Offline Offline
Shannon Member
****
Karma: 206
Posts: 12048
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

You either need to know that the voltage never exceeds 5V, or you need a voltage divider.
Logged

[ I won't respond to messages, use the forum please ]

Pages: [1]   Go Up
Jump to: