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yes, I should think so. The BBS01B fulfils the need for a basic pedelecs, so there is no reason to remove it. Would they fit a torque sensor in the BBS01B? Quite possibly I reckon.

I don't try to emulate the success of the TSDZ2. As we would do away with the current assist levels and throttle, take a look at this VESC project: VESC – Open Source ESC | Benjamin's robotics (vedder.se) If combined, it would make for a cheaper and more flexible kit. If this project succeeds, I...

you see too much into this project, honestly. I will publish the schematic diagram so anyone wants to make a better device, can.

not really. The code for the HX711 is already on the net and it easy to modify. The user interface will probably be written in micropython, there are plenty of more experienced programmers than me so I expect rapid progress once the hardware is available.It's up to the individuals to choose...

guerney's predictions are way too far ahead. I may hit a lot of troubles making a good replacement axle. I guess we'll know when the samples arrive.

adding a torque sensor to the BBS01's bottom bracket axle has only a small market potential because practically all the BBS01 owners are happy with what they have got. The BBS01 is dependable and relatively cheap. It would be hard to convince existing owners to fork out something like £40-£50...

Yes, I think the tsdz2 will be OK after sorting out the cables under the bb.

Thank you for reminding me of that chip. Acorn used it. I tried quite hard to convince Beeb users to switch to double density with the WD 1770 chip but it's too late. Acorn introduced the Archmedes while the world turned to IBM and Visicalc

BBC Micro Peripheral at the Centre for Computing History Go down the 'S' for Solidisk, it's me.

So you and I have a lot in common. My first successful design was a DRAM board. It was for the Commodore PET 2001 and later for the BBC Micro model B. Before that, I used expensive static RAMs. DRAMs were much cheaper so margin was much improved.

yes, it is but I prefer baby steps. You don't have 3/5/9 levels of assist anymore and you will be able to use your phone or a low cost touch screen to control your ride instead of your old LCD.

I bought a sample of this board: Analog Voltage to PWM Signal Converter 0-5V/0-10V Analog Input Voltage to 0-100% | eBay . It's just to avoid debugging. The world seems to run on 3.3V at the moment.

every system is a compromise. It's just a matter for you to choose what suits you best. Front hub has less traction because there is less weight put on it so can be twitchy on wet surfaces. Rear hub tends to break spokes because there is much more power and weight put on it, the stress on the...

thank you for the explanation. We'll fit extra ball bearings before we ship the motor.

@Nealh you added extra 6902RS to your tsdz2, how would you remove them if you need to?

based on your list of requirements and bike, I would suggest a rear geared hub kit, XF08C with 17AH downtube battery, inline brake sensor, seat post type pedal sensor. https://wooshbikes.co.uk/cart/#/product/uid-177-xf08c-17ah/xf08c-rear-hub-kit-with-17ah-battery The 17AH battery gives you a...

That depends. Basically, the HX711 digitises the Wheatstone bridge and transmits the result to the arduino ( the prototype runs from the controller 5v rail), vcc, ground, data and sck so uses 2 digital pins. The throttle uses one ADC pin. The return throttle signal uses a DAC pin. That's the...

No, not really. I can only buy proven 250w kits.

You may be right on this.

For the moment. Competition is good for customers.