Search found 141 matches

by erwincoumans
Feb 09 2016 3:37pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 205656

Re: 10S custom skate ESC: testers wanted!

I wanted to announce how we are handling the latest hardware update to version 4.12. Vedder recently added another capacitor above C18 to address a fault occurring in FOC mode, in effect doubling the capacitance at C18 Every VESC leaving our shop now comes with a C18 modification on v4.11 hardware....
by erwincoumans
Nov 21 2015 9:56am
Forum: Stand-up E-scooters and E-skateboards
Topic: How To Solder Your Own VESC!
Replies: 62
Views: 12148

Re: How To Solder Your Own VESC!

I don't think a two layer board, I mean two-sided board is a good choice to learn Smd technique. If you're only building one or two, or four a lot of people will just hand solder... Those are people who are experienced, have a good temperature control, magnification, hot air etc. I was new to SMD h...
by erwincoumans
Nov 20 2015 12:18am
Forum: Stand-up E-scooters and E-skateboards
Topic: How To Solder Your Own VESC!
Replies: 62
Views: 12148

Re: 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 any r...
by erwincoumans
Oct 31 2015 12:40pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 205656

Re: 10S custom skate ESC: testers wanted!

I made my oshpark V4.10 VESC file public today for anyone wanting to build one of their own. 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 f...
by erwincoumans
Oct 20 2015 10:58pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Uart communication
Replies: 14
Views: 3896

Re: 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. Thanks for the tips. I have to run at 9600 because the Adafruit UART only runs at that speed. I'm also stuck on Firmware 1.6 as updating via BLDC tool isn't working for me. I've ...
by erwincoumans
Oct 20 2015 8:52am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Uart communication
Replies: 14
Views: 3896

Re: 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.
by erwincoumans
Oct 14 2015 8:12pm
Forum: Stand-up E-scooters and E-skateboards
Topic: E-GO by Yuneec Internationl
Replies: 284
Views: 62281

Re: 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. A dual motor setup requires two ESC's, so no,...
by erwincoumans
Oct 14 2015 5:32pm
Forum: Stand-up E-scooters and E-skateboards
Topic: E-GO by Yuneec Internationl
Replies: 284
Views: 62281

Re: 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 test ...
by erwincoumans
Oct 13 2015 9:07pm
Forum: Stand-up E-scooters and E-skateboards
Topic: E-GO by Yuneec Internationl
Replies: 284
Views: 62281

Re: E-GO by Yuneec Internationl

@jakeyb, this is actually very interesting to me. I've got a lot of people asking whether they can swap their E-go motor with my hub. I told them I dont know because I dont have an E-go. Now thinking of buying one, doing your mod and swapping the motor. Cool thing is that the wheels are already 90m...
by erwincoumans
Oct 13 2015 1:18pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Question about coasting
Replies: 6
Views: 779

Re: 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 for e...
by erwincoumans
Oct 13 2015 11:12am
Forum: Stand-up E-scooters and E-skateboards
Topic: E-GO by Yuneec Internationl
Replies: 284
Views: 62281

Re: 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 mea...
by erwincoumans
Oct 09 2015 12:54pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Uart communication
Replies: 14
Views: 3896

Re: 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 motor: 0.23 A Curr...
by erwincoumans
Oct 05 2015 10:47am
Forum: Stand-up E-scooters and E-skateboards
Topic: DIY Boosted inspired electric longboard
Replies: 136
Views: 26969

Re: 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 a key...
by erwincoumans
Sep 25 2015 10:44am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electric skateboard Remote Controller
Replies: 22
Views: 4393

Re: 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)
receiver.jpg
receiver.jpg (45.08 KiB) Viewed 4139 times
It also has a speed selector function:
speed_mode.png
speed_mode.png (39.84 KiB) Viewed 4139 times
by erwincoumans
Sep 19 2015 1:55pm
Forum: Stand-up E-scooters and E-skateboards
Topic: You guys heard of Benchwheel?
Replies: 94
Views: 19776

Re: 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 optical...
by erwincoumans
Sep 16 2015 7:03pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Open Source Arduino transmitter/receiver for (V)ESC
Replies: 122
Views: 19414

Re: Open Source Arduino transmitter/receiver for (V)ESC

but if so I can't explain the video, the random motor twists begin when i power my tx. 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 so...
by erwincoumans
Sep 16 2015 11:13am
Forum: Stand-up E-scooters and E-skateboards
Topic: Open Source Arduino transmitter/receiver for (V)ESC
Replies: 122
Views: 19414

Re: 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 check output....
by erwincoumans
Sep 15 2015 8:51am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 205656

Re: 10S custom skate ESC: testers wanted!

I am a bit lost with the versions of the VESC. I am about to buy PCBs for the 4.7 version. Is there a changelog of changes between versions ? Is the BOM specific for a given version ? 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...
by erwincoumans
Sep 14 2015 9:58am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC blew up... any ideas? (EDIT: Problem found)
Replies: 11
Views: 1005

Re: VESC blew up... any ideas?

Why these connection are not made prior to shipping baffles me. 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...
by erwincoumans
Sep 12 2015 7:15pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC blew up... any ideas? (EDIT: Problem found)
Replies: 11
Views: 1005

Re: VESC blew up... any ideas?

is the capacitor properly connected, white stripe to ground? Or do the capacitor pins connected/touched VESC?
by erwincoumans
Sep 06 2015 5:17am
Forum: Stand-up E-scooters and E-skateboards
Topic: Open Source Arduino transmitter/receiver for (V)ESC
Replies: 122
Views: 19414

Re: Open Source Arduino transmitter/receiver for (V)ESC

Thank you! I soldered everything together and it seems to work fine. Only not sure if I have to power the potentiometer directly from the Lipo or from the Arduino 3,3v/gnd or doesn't matter? This should also work with other potentiometers? Cause I have some laying around and in mind to design my ow...
by erwincoumans
Sep 02 2015 9:25pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Open Source Arduino transmitter/receiver for (V)ESC
Replies: 122
Views: 19414

Re: Open Source Arduino transmitter/receiver for (V)ESC

I've successfully uploaded the code on my receiver arduino. But when I try uploading transmitter code I get this error: Arduino: 1.6.5 (Windows 7), Platine: "Arduino Nano, ATmega328" Build-Optionen wurden verändert, alles wird neu gebaut Verwende die Bibliothek SPI im Ordner: C:\Program Files (x86)...
by erwincoumans
Aug 29 2015 10:50am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 205656

Re: 10S custom skate ESC: testers wanted!

I did manage to get rid of much of the hardware problem with a patch: http://home.vedder.se/public/pictures/VESC_Shunts/mod_fix_1.jpg http://home.vedder.se/public/pictures/VESC_Shunts/mod_fix_2.jpg I would like to reproduce this, because I already have 10 VESCs waiting to be patched. Can you please...
by erwincoumans
Aug 23 2015 10:38am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC - Custom Applications
Replies: 16
Views: 5546

Re: 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 a che...
by erwincoumans
Aug 22 2015 7:25pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Open Source Arduino transmitter/receiver for (V)ESC
Replies: 122
Views: 19414

Re: Open Source Arduino transmitter/receiver for (V)ESC

Tombombadil1988 wrote:Thanks for sharing Erwin! I thought that the wireless nunchuks had a way to turn them on and off with an integrated switch or something.
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...