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About donaldduck8

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  1. You can equip the housing of the Bluetooth module with a Faraday cage. For this, the inside of the housing should be covered with self-adhesive aluminum or copper foil. As a result, the radio waves can no longer escape to the outside. Furthermore, it would be possible to disconnect or cut through the antenna of the Bluetooth module. Greetings Donald
  2. Please use Google Translate: https://translate.google.com/translate?sl=de&tl=en&js=y&prev=_t&hl=de&ie=UTF-8&u=https%3A%2F%2Fmiui-germany.de%2Fforum%2Findex.php%3Fthread%2F17543-xiaomi-ninebot-mini-segway-2015%2F%26postID%3D122212%26highlight%3Dbeeper%23post122212&edit-text=&act=url I dont cut any Cable, all attack points only soldered. Greetings Donald
  3. or see hier, my anti Beep Version. The beeper is only switched off when you stand with both feet on the foot plates. https://miui-germany.de/forum/index.php?thread/17543-xiaomi-ninebot-mini-segway-2015/&postID=122212&highlight=beeper#post122212 Start at Post #755 Greetings Donald
  4. you can try this schematic: For the switch, you can take any single-pole switch. Donald
  5. No, this is not possible. Both outputs work against each other, which gives a short circuit With a switch you could choose between both Hall sensors. Both sensors simultaneously only works with additional electronics. For example, an operational amplifier (OP) as summing amplifier for both sensors. Donald
  6. hi, look there... https://forum.electricunicycle.org/topic/6990-reversing-minipro-steering-sensor/?page=4&tab=comments#comment-103429 and https://forum.electricunicycle.org/topic/8507-joy-stick-control/?tab=comments#comment-123956 Greeting Donald
  7. I think that this requires an additional pull-up. On the mainboard this is a 2.2KR resistor provided see the original circuit diagram... Greeting Donald
  8. The weight measurement will be updated for every ride! The driver with his body weight is part of the PID regulation. https://en.wikipedia.org/wiki/PID_controller If the weight is not set to the correct PID parameters, there will be a rule outage. These then make themselves felt in an extremely sluggish or overdriving driving behavior. Greetings Donald
  9. In order for the Ninebot to balance safely, the internal (PID) controler must be adjusted to the rider's weight. Therefore, a weight sensor was integrated in addition. Here you can see him inside the case: When ascending, the parameters for the P + I + D ratio are recalculated according to rider weight. Greetings Donald
  10. Here you can see the 3 Hall sensors installed in the motor: Greetings Donald
  11. You can calibrate the offset without mechanical intervention 1. Turn the Ninebot on the back 2. Press the on / off switch - wait until both wheels turn alternately left and right - switch off 3. Turn around and smile - Ninebot no longer turns left or right - calibration completed. See Video: https://www.youtube.com/watch?v=qB5FvoQIhAQ Greeting Donald
  12. No, unfortunately that is not possible. Forward and reverse is done by regulating the position using the gyroscope and accelerometer (LSM6DS3). This IC is located on the motherboard labeled U9 (and not in the frame as I had described above) The only way I think is the manipulation of I2C communication between U9 and main processor. Do you want to build such a wheelchair? http://www.funshop.at/produkt/nino-rollstuhl-weiss-blau/ There is no need for a joystick for forward and reverse, all by shifting your weight. Greetings Donald
  13. Yes, exactly In my example, the two 6.8K ohm resistors are for a 4.7K ohm poti. Now you need to open your joystick and find out the resistance of the internal potentiomer. If you tell me this value I can calculate you the appropriate series resistance. Greetings Donald
  14. Hello Marvin Martien, Does he turn off when you lift him in normal operation? If that does not work, the "Gravity Sensor" will not be detected correctly. The minipro has an internal electronic weight scale. This detects a negative weight when lifting and then shuts off. Maybe when installing the new mainboard the white connector plug was forgotten, that would explain your problem. Greetings Donald
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