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Is there a reason why not choosing a multiplier of 2? It is so much easier to calculate the real distance and speed 🤔…

We buy but don’t really own it… and “with a click” they can brick it…

magnet and reedswitch needs to be far away from other "spinning" metal objects...

Oh sorry 7.8ohm @12V = 1.5 ;)

If you draw too much amps from the LPP port you get this error message (I had it when using a electromagnet of 23ohms if I remember well)

How will you provide the power?

Hi Alumipro, If you are brave and curious, you could open the electromagnet case and see and measure the resistance of the coil. I made different coils , some didn’t worked … Maybe share, if they allow that, the installation instructions . Let us know how this sb works Thanks

Ok, they produce the magnetic pulse, and provide a sort of kiox display replacement by reading the motor data (they reverse engineered the communications protocol of the kiox display)

I made my own setup (MEGABOBRA: Bosch Smart System Derestriction for Rim Magnet - DIY Project with Support) On my original firmware i managed to have a quite easy rudimentary working setup. When upgrading the motor system firmware from 4.21.0 to 8.16.0, troubles appears. After a loooot up and...

I made my own setup (MEGABOBRA: Bosch Smart System Derestriction for Rim Magnet - DIY Project with Support) On my original firmware i managed to have a quite easy rudimentary working setup. When upgrading the motor system firmware from 4.21.0 to 8.16.0, troubles appears. After a loooot up and...

Must e the location of the “programmable” 🤨, hall sensor…

This is my setup: (earlier posts) https://www.emtbforums.com/threads/megabobra-bosch-smart-system-derestriction-for-rim-magnet-diy-project-with-support.34779/post-507814

Good to know, now all four assistant modes can be tuned 😃

Apparently I had to do a second update and now to 8.16.0 ! First quick short test run and all seems ok… (I am running at factor 2, easy to calculate 😉)

Just did an update of my drive unit from 4.21.0 to 5.17.0 , will see how it goes🤞 … All went well😃

All you want to know about reedswitch https://www.explainthatstuff.com/howreedswitcheswork.html

I am quite sure that the hall sensor in the Bosch motor is only picking up the total (xyz) magnetic field, just because of not knowing if the rim magnet n-s or s-n placing! In green the different signature by passing the magnet n-s or s-n (see the symmetry) So, generating just the white...

If that is the case, the magnet could not be strong enough when passing very fast against the reedswitch, not able to close… Try to stack another coin magnet on top of one other…

If they want, they can have full control over our ebike motor…:cry:, have a good relation with an authorized bosch dealer...😇, "dangerous" ...:unsure: https://www.bosch-ebike.com/en/service/ebike-tuning "The software of the Bosch eBike systems can detect whether the pedelec has been tuned by...

I had that phenomena too at high wheel revs. Repositioning the electromagnet solved that for me. see for exact location here ...