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  1. erwincoumans

    10S custom skate ESC: testers wanted!

    Great, I ordered one and wonder if I get 4.12 still? I like your PNG of the silkscreen with the component numbers. I can't find those on Vedder's github repo. Could you also share a PNG of the other side of the PCB? Did you use Kicad to create those PNGs?
  2. erwincoumans

    How To Solder Your Own VESC!

    I was new to SMD hand soldering and within a few weeks learned VESC assembly by hand SMD soldering, using microscope, hakko soldering iron and hot air. Using hand soldering seems a good SMD technique, although it takes time and patience. Do you suggest that using a reflow oven is easier to...
  3. erwincoumans

    How To Solder Your Own VESC!

    I hand soldered several working VESC from bare PCB, and used: 1 stereo soldering microscope https://www.amazon.com/gp/aw/d/B005C75IVM/ref=yo_ii_img?ie=UTF8&psc=1 hakko fx-888d soldering iron heating gun, needed for DRV8302 ground pad and to fix issues flux, tweezers, leaded solder I didn't use...
  4. erwincoumans

    10S custom skate ESC: testers wanted!

    That is convenient. I didn't realize that the VESC is 4 layer, I thought it was just 2. It would be great to have such a public link to order ready-assembled VESC in small batches (ignoring the high price for now). Right now it is very complicated to order assembled VESCs, because the number of...
  5. erwincoumans

    VESC Uart communication

    Get the stm discovery kit, it has an st-link onboard. It is cheap from Amazon, and you can use Vedders UART code on it. The separate st-link v2 programmer never worked for me.
  6. erwincoumans

    VESC Uart communication

    You seem to run an old VESC furmware, can you try with the latest one? Also, I would leave UART speed default to 115200.
  7. erwincoumans

    E-GO by Yuneec Internationl

    I just tried it and none of my sensorless motors with with original e-go ESC, it seems to require Hall sensors. The phone-app reports 'hardware error'. The original motor has Hall sensors. The VESC does detect the Hall sensors and works in sensored mode. I used my own hand-soldered VESC's...
  8. erwincoumans

    E-GO by Yuneec Internationl

    A dual motor setup requires two ESC's, so no, stock e-go has only a single ESC. That's why I replaced the ESC by two VESC's, then your dual motor kit will work (use a splitter cable to power the two VESC's using e-go battery pack. A single hub motor maybe possible with stock e-go ESC,I need to...
  9. erwincoumans

    E-GO by Yuneec Internationl

    I still have your dual hub motors here (they work fine with my custom patch). I could hook up a single motor to the original e-Go ESC, if I find some time. I've used the hub motor with dual VESC on the E-go with original battery, works fine.
  10. erwincoumans

    Question about coasting

    I find a hub drive to be closest to regular skateboard when coasting, so if smooth coasting is your goal, contact Pediglide. With more advanced encoders in motors, (V)ESC software could me modified to compensate for friction, cogging etc, but that needs significant work. Such compensation (and...
  11. erwincoumans

    E-GO by Yuneec Internationl

    I've done a lot of experiments modifying E-Go with single and dual motor setup, with and without sensors. Here is a dual-motor setup, with the $299 dual Benchwheel power kit and dual VESC that I hand-soldered. The acceleration and speed feels similar to my dual 2000W Boosted Board, but I haven't...
  12. erwincoumans

    VESC Uart communication

    Great, I just tested it with my STM32 Discovery and it works well. Only the 'val' command uses UART, all the other commands (help, info etc) don't require VESC. The 'val' command indeed returns the values in the terminal: ch> val ch> Input voltage: 26.29 V Temp: 24.29 degC Current...
  13. erwincoumans

    DIY Boosted inspired electric longboard

    Congrats, this looks great. It might help to keep a few extra cm. distance between Arduino /nRF24l01 and ESC (especially mosfets). Also the nrf24 version with PA+NLA+longer antenna might be better. What mill did you use to mill aluminium? How did you attach pulley to motor shaft? Did you grind...
  14. erwincoumans

    Electric skateboard Remote Controller

    Yes, I got this controller too, it was $49 a few months ago, it works well with the VESC and other ESCs. Here are some pictures related to it with pin-out (use the 3 pins on the inside of the 6 pins PCB next to the MCU) It also has a speed selector function:
  15. erwincoumans

    You guys heard of Benchwheel?

    I got the Benchwheel kit and the motors are not sensored. Startup is great using VESC, there is a small belt transmission ratio. With some work, you could add sensors in the caps that cover the shaft/pulley. For example you could add hall sensors in the caps, similar to boosted board, or add...
  16. erwincoumans

    Open Source Arduino transmitter/receiver for (V)ESC

    Did you enable 'safe start' in the VESC Applications/PPM options? If not, please do so and reboot VESC. Indeed, your two Arduino's don't communicate. Did you connect the nrf42L01+ in both Arduinos? Did you try some example sketches like ping-pong? First make sure the 'pingpair' sketch works...
  17. erwincoumans

    Open Source Arduino transmitter/receiver for (V)ESC

    You should first check if the transmitter reads ok values from the potentiometer, using Serial connection. In the Arduino IDE, uncomment line 70+71 Serial.println(potValueA) and upload/run the modified script nrf24l01_transmitter and open Tools/Serial Monitor using 115200 Baud rate and...
  18. erwincoumans

    10S custom skate ESC: testers wanted!

    You might want to wait for VESC 4.8. Version of BOM and vesc design files at github matches and is currently at 4.7, but 4.8 seems to be around the corner (few weeks?)
  19. erwincoumans

    VESC blew up... any ideas? (EDIT: Problem found)

    Indeed, that baffles me too. When you sell a VESC, please provide the option to pre-solder a red and black 12-Gauge wire to it of 20 centimeter, with the Capacitor attached. I would also pre-solder 3 wires to the mosfets. Then the user will simply solder the connectors. With one of my first...
  20. erwincoumans

    VESC blew up... any ideas? (EDIT: Problem found)

    is the capacitor properly connected, white stripe to ground? Or do the capacitor pins connected/touched VESC?
  21. erwincoumans

    Open Source Arduino transmitter/receiver for (V)ESC

    Congrats with your working version. You learn by doing (and failing sometimes). It works with other potentiometers too. I would use Arduino 3.3/gnd, the lipo drops voltage when discharging.
  22. erwincoumans

    Open Source Arduino transmitter/receiver for (V)ESC

    Remove the ,false around line 122. See https://endless-sphere.com/forums/viewtopic.php?p=1059380#p1059380
  23. erwincoumans

    10S custom skate ESC: testers wanted!

    I would like to reproduce this, because I already have 10 VESCs waiting to be patched. Can you please share another picture of the patch with the full PCB? Did you patch both shunts? How can the nRF24L01+ be connected to the current VESC 4.7, I didn't find any pinout. Finally, the latest...
  24. erwincoumans

    VESC - Custom Applications

    Once you have a few VESC's it is fun to control them externally over CAN-bus. Such motion control over CAN could be useful for multi-wheel vehicles using VESC. Another application would be to perform Cartesian motion control for a robot, but that is outside of the scope of this forum. I bought...
  25. erwincoumans

    Open Source Arduino transmitter/receiver for (V)ESC

    Yes, mine did as well, but the button was attached to the part of the original PCB that I had to cut away to make space for the Arduino...
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