New Affordable Bottom Bracket Torque Sensor Runs on 5V Standard Signal

We discovered a new mainland made bottom bracket torque sensor that operates on a 5 volt standard.

5V Signal Bottom Bracket Torque Sensor

Most e-bike brake handles, throttles, speed sensors, and LCD’s run a standard 5V+/- signal much like USB. Unlike many of the high priced German BB torque sensors that run on a strange variable 5.3~18v +/- system, this new 5V, affordable torque sensor opens a lot of controller possibilities. This is possible via small breakout “voltage adapter” box. We have had a very difficult time finding mainland controller manufacturers able to conform with the German standard of 5.3~18v +/-.

5volt_BB_torque sensor

Not to mention this new BB torque sensor is almost half the price of the it’s German engineered equivalent. We will be testing this new torque sensor in the Spring season with a mainland made Sinewave controller and BPM geared motor.

Check back for our updates on this new find! Now if we could only source a reliable BB torque sensor with a replaceable cable connector coming out of the side so we don’t have to drill a cable exit hole out from the center of the bottom bracket….

New BB torque sensor looks promising Albeit the center cable routing
Also need to test the IPXX water rating and axle hardness

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6 Responses to “New Affordable Bottom Bracket Torque Sensor Runs on 5V Standard Signal”

  1. James Keeper March 20, 2014 at 5:18 am #

    Nice upgrade to the standard torque sensor. Is it working?

  2. topsecretev May 9, 2014 at 1:07 am #

    Update 4/15/2014:
    We tested this new BB torque sensor at both the Taipei Cycle show and China Cycle show.

    While it does show progress, the programming needs improvement. It was like riding the smoothest speed sensor we have ever tired, but no where near the level of the German Torque sensors.

    We predict all the feedback from the industry shows will push this product development into overdrive. Most likely we can expect to see a perfect working Rev II in about 6 months (we hope.)

  3. Wilhelm July 8, 2015 at 8:36 am #

    Any progress?

  4. topsecretev August 7, 2015 at 6:29 pm #

    Yes, we tested the BB torque sensor again and it is much more stable then when we tested a few years ago. However, you must use there controller which has some limitations when it comes to LCD display options.

  5. Fabian January 1, 2016 at 10:45 pm #

    Where can I buy this BB torque sensor?

  6. topsecretev February 7, 2016 at 1:59 am #

    Dear Fabian,

    For a single unit purchase you can try the aliexpress or alibaba websites.

    Good luck,


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