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If back pedalling is not a requirement, just use a 555 Timer IC to generate a pulse train. About 10Hz with 1:2 ratio for on/off would work perfectly. Pretty easy and cheap.

In theory yes, but hard to implement. An easier one with single Hall would be to use pairs of opposite polarity magnets with different spacing among and between pairs. But poor response time and complicated.

Of course yes. I was referring to the question at start of this thread which asked whether we can have a sensor that works for pedalling in both directions.

There is no way to detect direction of rotation with just one hall sensor, so they have to be dual hall. To see this, think of discrete images of a circle with dots on them --- from that info alone one cannot know whether the circle is rotating clockwise or anticlockwise. One needs the...

One difference is that, at least on some controllers, the start threshold is set to a certain number of pulses -- say 6 pulses which in case of 12 magnet disc is 1/2 rotation, but 6 magnet disc would take a full rotation of the crank. That is, how quickly the motor engages when you start...

For what? I'm from Canada and you think I do not know GRIN Technologies?

Many options in the UK and EU, but none of them ship to where I am (Canada), unless I missed something. We pay dearly for everything here. Current Swytch price for their GO line is by far the best I can find from here for a kit using parts from manufacturers I've at least heard of -- Aikema...

Why do so many say Swytch is pricey? Swytch is probably the cheapest option for front hub kits at their 40% to 50% sale price that is available all the time. Where can you get a wheel, controller, PAS and battery( 36V, 10Ah) for $450 + $50 shipping to the US? That's where Swytch GO++ pre-order...