jeffersonduang

I agree with your opinion.
Do you like integrated or smart bicycle ?
Which function do you like best?

jeffersonduang

"propelled by a pedalling action" that's so right ! When a bicycle propelled by a pedalling action, it could called a bicycle! That's what we want to do!
A bicycle should be control as well as cyclist's wish.

Some time, I don't want to put computer technology (i.e cadence, heart rate, speed, power, etc.)in my bicycle if they are not perfect.
Do you have the same concerns ?

jeffersonduang

Hey my friend! tell me what part you like better.

jeffersonduang

I also want to make a thing like this . So I can ignore the police.

Machka 

I don't want to put computer technology in my bicycle at all.

I may use computer technology, but it will be a separate unit ... not part of my bicycle.

jeffersonduang

That's not bad. What kind of bicycle do you ride often? when you ride , which sensor do you use often?

Machka 

Between my husband and me, we have about 20 bicycles. And we have a computers on each of them.

jeffersonduang

What!? you have 20 computers? That's amazing!! If you don't mind, please add me as your friend. I will have a lot to learn from you.

Redhatter

Maybe some integrated lighting… So headlight, tail light, perhaps indicators. I have a DIY lighting system on mine and being able to signal a turn without needing to take my hands of the handlebar has its advantages.

USB power supply ports so you can charge phones, music players, etc that might be stored in a handlebar bag/basket. A small battery on-board could power all this. Have some dynamo hubs installed and the battery can be charged using regenerative braking.

That's about as much as I could think of. The battery would need to be a standard form factor, and readily replaceable. I'm thinking a tube that holds 4 D-size NiMH cells, since they're readily available and easily replaced. LiFePO₄ would have more density but are harder to get hold of and require more fancy balancing circuitry. 4 1.25V cells would be good for a 5V USB supply for a phone and could power modest LED lights for some time.

A 12V system is another option, you could have a cigarette lighter socket somewhere for powering appliances. This is what I have on my bike, and it comes in handy. The downside is the battery weighs 2kg, which for some would be a deal breaker.

As others have said, you don't want to try and cram too much technology in there for two reasons:
- It goes obsolete
- Potential for damage

If the device is separate, it can be replaced easily.

Some things could be embedded in the frame, such as cadence sensors, communicating using Bluetooth to say a smartphone, however then protocols have to be considered. If it's an open protocol, supported by some common APIs, then theoretically the user can use whatever application they want, even one they write themselves. However, its more common for companies to go the proprietary route which means once the company loses interest in supporting the widget, the customer is left with this useless bundle of electronics that now becomes dead weight on the bike.

GPS units are frequently upgraded and particularly vulnerable to damage, so best kept separate.

Cycle computes are probably similar, although they're less fragile than a GPS or phone. I'm not sure if they follow interface standards or not. Pretty much anything else on a bike is a gimmick.

Machka 

It's not like computers are expensive or take up space.

See ...

Computers | Chain Reaction Cycles

Cateye's are among my favourite, but I've used several brands.

Dave Horne

My bike has integrated lights (SON ... Schmidt's Original Nabendynamo). It would be nice to have a USB port on the handlebar to charge my smart phone or to power my smart phone when using maps. etc.

https://www.nabendynamo.de/english/

fietsbob

SON SL would be a good step towards that . SON SL

the electrical contacts are made just by putting the wheel in the fork..

HauntedMyst

As a flatulent man, I've always liked the idea of having use of that "gas" by having an afterburner integrated behind the seat for extra boosts when I need it.

Panza

Too busy looking at trail to look at my speedometer. On a road bike sometimes I just look down at my meter and pedal. As long as the bikes are accessory friendly, thats good enough I believe.