Background
  1. 2 x 100 k ohm resistors
  2. 1 x in4007 diode (can be any power diode, specs not important)
  3. 1 x USB male port
  4. 1 x 5 volt solar cell

 

 

 

 

 

 

 

 

 

 

 

 

 

Instructions

The USB connections are as follows (use chart below for identification): 2 and 3 are connected (fused) together. One resistor is connected from pin 1 to pin 2,3 – the other resistor is connected from pin 4 to pin 2,3 – Pin 1 is the positive connection via the diode, from the solar cell and pin 4 is connected to ground or negative polarity of the solar cell.

 

 

The USB Pinout:

4 pin USB A or USB B plug connector layout


Pin

Name

Cable color

Description

1

VCC

Red

+5 VDC

2

D-

White

Data -

3

D+

Green

Data +

4

GND

Black

Ground

 

 

 

 

 

 

 

Need more info on USB pinouts? Then go here

 

Here’s a full size image…

That’s all there is to it!

 

 

 

ipad lessons

 

 

 

 

 

Solar Panel Info


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