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I find it very strange that an electromagnetic pulse similar to the one created by the magnet creates these problems. The only thing that has not changed in all Bosch software versions is the rotating magnet that provides an N-S pulse. We are missing something. Maybe I can get an old signal...

Very good, I am sure that the reproduction of the signal similar to that of the magnet is the only solution to combat the Bosch 25Km/h blocking system. In the latest software versions, the problem of errors that are obtained with only the positive impulse of the coil are unfortunately frequent...

What software version do you have in your engine? It could be that your speedbox is not updated to the latest software version. However it is a terrible product, not worth the money it costs

I advise you not to update the software. I have 9.13.0 and I can't get the megabobra to work reliably...

The use of the L9110S is an excellent idea, I await your news on the firmware version and possibly also the specifications of your new mini electromagnet.

Hi Megabobra, happy to read you again. Congratulations on the evolution of your work. However, I want to ask you which software version you are testing your project on. I currently have 9.13.0 and after several attempts to use your project with seeeduino with only the hall sensor variant instead...

Thanks for the info. Could you also tell us what firmware version you have on the bike?

Thanks for sharing. As soon as I have a free hour I'll try to build something similar.

Hello, it will be very interesting to know how the speedbox device works. I read your posts about your megabobra device. I believe your problems, like mine, are largely due to the construction of the electromagnet coil. @manu.w has the same software version as you but doesn't have these...

In detecting the wheel revolutions, the Bosch system, in addition to the frequency of passage of the magnet, also takes into account the duration of the on state created by the magnet as it passes. This has a duration that is expressed as a percentage of the entire rotation cycle of the wheel...

I'm back with the updates. Unfortunately there is no good news for me. After finding a good position for the electromagnet with great difficulty, I took it for a test run. After less than 5 km I got the error 523003, "the speed sensor does not work correctly". I restarted the engine and for...

Thanks for the clarification, from the tests carried out the device behaves as you describe, but the problem of switching on the electromagnet for a complete wheel revolution remains, from the instrumental tests just carried out, the frequency in which what described happens is around 1Hz which...

Good morning everyone and happy 2024. I congratulate megabobra for having designed and made available the project to create the device to unlock the speed limit of the smart system with rim magnet. Following the guidelines of the post, I created the device with a Xiao rp2040 seeduino, adapting...

Grazie per l'ammissione al forum, spero presto di partecipare. Un saluto