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Tektro Dorado sensor, new configuration

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    Tektro Dorado sensor, new configuration

    A little over two years ago PCliteuser spliced a Tektro e-brake lever sensor to the LUNA motor e-brake sensor. Back then the cable colors were different. According to PCliteuser, the Tektro sensor had two cables (one blue one red) and the LUNA sensor had three cables (one each red, black and white).

    My problem TODAY is that I have the same setup: attempting to splice together the stock three-pronged connector with the Tektro Dorado sensor. The Dorado brake sensor still has two cables, and the LUNA sensor still has three cables. however, now the colors are slightly different. The LUNA sensor NOW has one red, black and blue cables. And the Dorado sensor has one black and one blue sensor.

    I attempted to splice the (seemingly) obvious connections: black to black and blue to blue. I left the red cable from the LUNA sensor free. Apparently this is NOT the correct connection, maybe? I installed the sensor to the brake lever, turned on the battery/motor and engaged the brake, unfortunately I did not see any signal on the screen that registered brake engagement.

    Does any body have any (more recent) experience with this? For posterities' sake, I've linked PC's thread here. I don't want to try too many times to splice too much, as there is only a certain amount of cable to work with.
    Please let me know how to make the sensor work. What cables do I need to connect in order for the motor to respond to brake engagement. I don't want to ruin my new purchase. I'm looking forward to your help. TIA!!
    just want to share. i bought pair of tektro dorado brakes but i didn't noticed that its from different e-bike company, so the motor cutoff is a bit different from

    #2
    Isn't red/blk/blu the throttle?

    Comment


      #3
      I'm asking about the brake connector (comes with the mid-drive kit) and the brake sensor (comes with the Tektro brake levers)

      the three-pronged connector that I am working with came from the stock, kit brake levers. So, no.

      edit:
      the throttle is in the box still. probs gonna just stay there.

      Last edited by freebike; 06-11-2018, 10:55 AM.

      Comment


        #4
        This post might help: https://electricbike.com/forum/forum...rs-not-working
        Intro: http://electricbike.com/forum/forum/...ntro#post17033
        First build, Priority Eight / BBSHD / Nexus IGH
        Second build, 2018 Crust Scapegoat, BBS02 or BBSHD, Rohloff IGH
        Third build, 2018 Crust Evasion step-thru, BBS02 or BBSHD, Shimano Alfine 8 IGH

        Comment


          #5
          thanks for the link ncrkd!
          Sometimes, I don't even know what to search for sometimes. I appreciate your help. I'll try removing the key and rotating the plug one pin clock-wise. IF that doesn't work I guess it's back under the iron!

          Comment


            #6
            update:
            cutting off the key, rotating the plug one pin clockwise, doesn't work. I'm not sure what to do. I'd really like to know how to make these sensors work.

            Comment


              #7
              Hi Freebike,
              Sounds like it's time to get out the multimeter! From the motor harness (female) we know what we should have for voltages. Verify that you still have them...and at what positions. May need a straight pin or single strand of wire being careful not to short anything. :-) Also along these lines, I would mark which one is the 5vdc hot connection and stay well away from it... If all is well, move to the brake cable. Does the switch make, or no resistance when the brake lever is pulled? Then it's just a matter of mating up the correct, used connectors. 4.75 volt brake signal and battery ground on the motor harness side, and the switching contacts on the brake lever side, polarity does not matter...I'm purposely staying away from wire colors or pin numbers, as I'm just a bit confused on who has what :-) so just verify.


              See my completed Magic Pie V5 rear hub motor E-Bike build HERE.

              Comment


                #8
                Hey Tommycat thanks for your succinct explanation. I will try to stay away from PIN numbers and wire colors too.
                But in the dark once you mentioned multimeter and “voltage”, “short” and “resistance”. I’m a complete novice as it relates to all this electricity talk.
                I also hope I didn’t ruin anything by jumping the gun and soldering the like-colored wires together: (harness) black and blue to (sensor) black and blue.

                I guess the first step is learning how to use a multimeter. I’ve got one on the way as I type. Wish me luck!


                Comment


                  #9
                  Originally posted by freebike View Post
                  I will try to stay away from PIN numbers and wire colors too.

                  I think I have things a bit more sorted out. The brake harness connector to motor pin out (or should I say hole designations) should be accurate.
                  .
                  But in the dark once you mentioned multimeter and “voltage”, “short” and “resistance”. I’m a complete novice as it relates to all this electricity talk.

                  Time to carefully read the multimeter instruction book.

                  I also hope I didn’t ruin anything by jumping the gun and soldering the like-colored wires together: (harness) black and blue to (sensor) black and blue.

                  That's the first thing I would check for...5vdc between holes 6 (red positive probe) and 8 (black ground probe)mentioned in my first sentence above. Do not touch the two probes together accidentally. THAT would be a short. :-/

                  I guess the first step is learning how to use a multimeter. I’ve got one on the way as I type. Wish me luck!

                  A know-how I believe to be a must with electric bikes, and will serve you well as a skill in life. Good Luck!
                  Standing by...

                  Regards,
                  T.C.

                  See my completed Magic Pie V5 rear hub motor E-Bike build HERE.

                  Comment

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