I will also hook up a USB connector plug to charge my BlackBerry Phone and Ipod. Most USB devices are rated 5v , so with this circuit like this, you will never need to deal with a solar charger to charge your phone, GPS, ipod, recharable batteries, or to power any standard USB device.
Please refer to Step 1, Step 2, Step 3 & Step 4 for further details..
FYI: This is a work in progress, and I will update my instructions as my project progresses. Please bear with me given my hectic schedule and feel free to contact me if you have questions regarding where to get the parts or accessories. And don't forget to leave feedback and suggestions.
Thank you for visiting & Have a Happy and Safe riding!
Step 1: Building the AC to DC Driver & Voltage regulator circuit..
Before you begin, it would greatly help if you review the following links:
1. Useful Dynamo/LED Circuits: http://www.pilom.com/BicycleElectronics/DynamoCircuits.htm
2. Voltage Regulator Circuit: http://www.youtube.com/watch?v=GSzVs7_aW-Y
Few Helpful links for novices:
1. Alternating Current (AC)
2. Direct Current (DC)
3. Full Bridge AC to DC rectification
4. Voltage Regulator
6. AC generator (Brushless Dynamo)
7. DC Motor (Commutated DC motor can also be used to as a DC generator)
8. Light Emitting Diodes
9. Soldering instructional video
And now...the Nut's & Bolts (Components Required) :
The circuit modules I used have been out there for a while, but what I did is combine both the Full Bridge Circuit & USB Voltage Regulator circuit to make something useful out of it using a bicycle AC generator.
1. [Full Bridge Circuit Diodes]
2. Voltage Regulator Components
[Capacitors: Left to Right]
3. Voltage Regulator [7805 Transistor]
4. High Charge Capacitor
Note: I don't have it in shown the circuit diagram. I will have to try out some high capacitance capacitors to supply voltage to the LEDs when my bike comes at complete halt. It may take few trials to find a powerful capacitor that fits the Altoids box, and also holds ample amount charge to keep the LEDs lit for few minutes. I will update the instructions once i find the best match. Meanwhile, If you have any recommendations, please feel free to suggest.
5. Dynamo Generator:
For this project, I assumed you already have a dynamo generator for your bike, but no worries if you don't. I can help get you started.
Bottle Dynamo: If you want to play and get started with one without spending a fortune, the X Factor 3-Inch Bicycle Generator Light Set from Amazon would be a great place to start. They sell for $13.11 at Amazon. A great & cheap little unit. This is the one shown in my project.
Hub Dynamo: if you are a more serious rider, you should probably switch to a Hub Dynamo. You can gather much more information on Hub Dynamo's and lighting on Peter White's website: http://www.peterwhitecycles.com/shimano3n70.asp
I also highly recommend Anthony from Longleaf Bicycles. A very helpful fellow and awesome wheel builder. You can find great deals here: http://www.longleafbicycles.com
In my opinion, switching to dynamos may seem expensive to start off with, but in the long run, these units pay off and puts back money in your pocket. And, if you are like me, who enjoys cool evening rides during hot summer months, that can save you a lot of dough.
I personally prefer and use both the Bottle and Hub dynamos. The Advantage of a Bottle dynamo is that you can engage or disengage it as needed, but with Hub Dynamos, you are stuck with it. It doesn't matter whether or not you need the electricity or not! This dynamo generators do add some resistance to the wheels, but not noticeable when riding.