Hello folks
Second post here - please be gentle with me.
I'm running a Shimano DH3N80 and a Philips dyno light - which is great apart from an epic fail on the mounting bracket.
What I'm looking for is some DIY circuitry that will enable to me to switch between:
Running the light
Powering my GPS (mini USB)
Charging up NiMh AA batteries
- or run all three together when I'm going fast enough,
- or run light +GPS at night
- or run GPS + charge batteries during day.
I saw some circuitry a while ago that did nearly all of that - bridge rectifier circuit and using the impedance of the batteries to control the output voltage to the USB.
I think the user who posted that was called n4zou but I tried searching without success on here and some links to diagrams other forums came up with Photobucket - picture moved or removed.
The links I did have were pretty old, so I was wondering what the current thinking on this might be - whether it has evolved at all ?
Second post here - please be gentle with me.
I'm running a Shimano DH3N80 and a Philips dyno light - which is great apart from an epic fail on the mounting bracket.
What I'm looking for is some DIY circuitry that will enable to me to switch between:
Running the light
Powering my GPS (mini USB)
Charging up NiMh AA batteries
- or run all three together when I'm going fast enough,
- or run light +GPS at night
- or run GPS + charge batteries during day.
I saw some circuitry a while ago that did nearly all of that - bridge rectifier circuit and using the impedance of the batteries to control the output voltage to the USB.
I think the user who posted that was called n4zou but I tried searching without success on here and some links to diagrams other forums came up with Photobucket - picture moved or removed.
The links I did have were pretty old, so I was wondering what the current thinking on this might be - whether it has evolved at all ?