Search found 51 matches

by Ryuudan
Mar 13 2018 2:46pm
Forum: Stand-up E-scooters and E-skateboards
Topic: What is the best personal electric transportation?
Replies: 19
Views: 2982

Re: What is the best personal electric transportation?

For that kind of distance and road, it might really be better to get a small wheel ebike. if money is not a problem, there's the brompton electric. 16 inches wheels and the smallest fold with a lot of cool accessories to make your life easier. Not lightweight though, but it rolls when folded like a ...
by Ryuudan
Mar 12 2018 5:42pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC suddenly cutting and resetting during acceleration
Replies: 0
Views: 567

VESC suddenly cutting and resetting during acceleration

Ok, I couldn`t find anything on the internet neither on the forum about this particular issue. Whats happening: When there's no load on the motor (ie wheels up in the air) and you try to go full throttle or even just around 60~70% the vesc freezes, blink the red LED 3 times and resets, after 3 secon...
by Ryuudan
Jan 30 2017 8:08am
Forum: Stand-up E-scooters and E-skateboards
Topic: Alibaba 50 dollars VESC worth it?
Replies: 35
Views: 5556

Re: Alibaba 50 dollars VESC worth it?

Any news on the case? I'm about to buy new VESCs and would like to know if the issue got resolved before buying.
thank you.
by Ryuudan
Aug 27 2016 6:39am
Forum: Stand-up E-scooters and E-skateboards
Topic: Alibaba 50 dollars VESC worth it?
Replies: 35
Views: 5556

Re: Alibaba 50 dollars VESC worth it?

@mccloed can you post here the link where you bought that VESC? so we can try same vendor or avoid it if something goes wrong.
by Ryuudan
Aug 13 2016 5:12am
Forum: Stand-up E-scooters and E-skateboards
Topic: BMS integrated in the charging brick - nice or stupid idea?
Replies: 16
Views: 1300

Re: BMS integrated in the charging brick - nice or stupid id

You forget that a BMS does monitor cell level for dis/charge cutoff and not pack level like the controller. So it adds some important protection level. Monitoring the pack level may be ok if not discharged too low and if the pack is new and never abused too much, but can be essential with weak, old...
by Ryuudan
Aug 12 2016 3:21am
Forum: Stand-up E-scooters and E-skateboards
Topic: BMS integrated in the charging brick - nice or stupid idea?
Replies: 16
Views: 1300

Re: BMS integrated in the charging brick - nice or stupid id

Ah, I see. As long as the BMS you want to use is ok with being connected and disconnected repeatedly, and the connector you use is designed so that it connects things in the right order (if the BMS requires say, main power first, then the balance wires, or some other particular order of connection)...
by Ryuudan
Aug 12 2016 2:32am
Forum: Stand-up E-scooters and E-skateboards
Topic: BMS integrated in the charging brick - nice or stupid idea?
Replies: 16
Views: 1300

Re: BMS integrated in the charging brick - nice or stupid id

Sounds like you want to use an RC Charger--those already do what you want. ;) Not really, RC chargers are programmable. You have to input how many cells, how many amps, balancing or quick charging etc. You have to carry the brick AND the charger. What I'm asking is what if you get a true plug and p...
by Ryuudan
Aug 12 2016 1:31am
Forum: Stand-up E-scooters and E-skateboards
Topic: Using a mosfet as a switch?
Replies: 34
Views: 5592

Re: Using a mosfet as a switch?

Anyone doing these and selling them? want to avoid messing with ordering all the parts and putting it together myself. Want to focus my time in other things, but I do need switches.
by Ryuudan
Aug 12 2016 1:20am
Forum: Items for Sale - New
Topic: Vedder Anti-Spark switches. Extras for sale.
Replies: 23
Views: 9262

Re: Vedder Anti-Spark switches. Extras for sale.

Do you still have them? I would build my own, but don't have the tools or experience in SMD soldering.
by Ryuudan
Aug 12 2016 12:54am
Forum: Stand-up E-scooters and E-skateboards
Topic: BMS integrated in the charging brick - nice or stupid idea?
Replies: 16
Views: 1300

BMS integrated in the charging brick - nice or stupid idea?

So, my project is a little tight in space. Just like Vanarian I'm building electric rollerblades, but thought it might be useful for everyone as it would save money for everyone IF it works. Since VESC has discharge protection, we don't need the BMS for riding, only for charging. My idea for chargin...
by Ryuudan
Aug 12 2016 12:48am
Forum: Stand-up E-scooters and E-skateboards
Topic: **New arrival** LeifTech electric "Freebord"
Replies: 14
Views: 2203

Re: **New arrival** LeifTech electric "Freebord"

Nice! I want to get me one of those as well. they seem a lot more fun than normal longboards.
waiting for a video and in-depth review please.
by Ryuudan
Aug 11 2016 11:34am
Forum: Stand-up E-scooters and E-skateboards
Topic: Which BMS for a 10S battery ?
Replies: 6
Views: 1010

Re: Which BMS for a 10S battery ?

I'm interested in that bypassing idea so you can use a 5A BMS instead of a 100A BMS making it much more affordable. Does anyone have a full diagram of this bypassing AND the wires to the battery, esc and battery? I'm kinda confused, could be because its 2am though. Gonna try and sketch something. Sh...
by Ryuudan
Aug 11 2016 6:12am
Forum: Stand-up E-scooters and E-skateboards
Topic: Alibaba 50 dollars VESC worth it?
Replies: 35
Views: 5556

Re: Alibaba 50 dollars VESC worth it?

I've seen the heatsinked VESC on alibaba as well. it might increase durability if it's properly done. problem is if they downgraded mosfets to actually need heatsink.
by Ryuudan
Aug 11 2016 1:06am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Fault DRV8302
Replies: 16
Views: 3100

Re: VESC Fault DRV8302

thx a lot.
I bought mine from Ollin, but he charged me 45 dollars just for the shipping. if I have to send it back to him to get fixed it's going to get almost as expensive as a new one.
living in Japan has its downsides.
by Ryuudan
Aug 10 2016 10:36pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Alibaba 50 dollars VESC worth it?
Replies: 35
Views: 5556

Re: Alibaba 50 dollars VESC worth it?

that would be great mccloed, please let us know.

I fried one of my VESCs and need 3 more, and don't have the money to buy them at 200 dollars a piece.
by Ryuudan
Aug 09 2016 8:18pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Alibaba 50 dollars VESC worth it?
Replies: 35
Views: 5556

Alibaba 50 dollars VESC worth it?

So I started to see VESCs being sold at alibaba.com for 65USD-50USD https://www.alibaba.com/product-detail/VESC-FOC-SIna-wave-controller_60483595550.html?spm=a2700.7724838.0.0.utuVT2 I'm very concerned by the size of those capacitors, but considering I had to pay around 170 USD(with 45USD just for s...
by Ryuudan
Aug 09 2016 8:09pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Fault DRV8302
Replies: 16
Views: 3100

Re: VESC Fault DRV8302

Hey undercoverpenguin, where did you send the VESC to repair? and how much it cost to repair? I'm having the same DRV8302 problem - VESC boots up, connects, read configuration, but as soon as I try to run motor detection it stops responding and the red blinking light keeps lit from bootup and even a...
by Ryuudan
Aug 09 2016 7:54pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC parking brake for electric wheelchair
Replies: 6
Views: 996

Re: VESC parking brake for electric wheelchair

Actually I can't post pictures right now. I'm in concept phase still. It's not a wheelchair for elderly or disabled though, more like a transportation commuting vehicle. I intended to use as little of hardware as possible to put this feature, so since the VESC has a MCU on it and has a UART port I f...
by Ryuudan
Jul 30 2016 4:56am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC parking brake for electric wheelchair
Replies: 6
Views: 996

Re: VESC parking brake for electric wheelchair

As I understand dragbrake shorts the phases and still uses energy to brake instead of the regenerative braking where the motor is "passive" and generating electricity instead of using it. Would this be able to use the full torque of the motor to keep it from rolling? I mean the full torque it can ge...
by Ryuudan
Jul 25 2016 10:31pm
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC parking brake for electric wheelchair
Replies: 6
Views: 996

VESC parking brake for electric wheelchair

So, I'm working in a project and using the VESC. It's a sort of wheelchair and people have asked for an electronic parking brake. So this is how it should work: It doesnt apply any torque to the motor unless the motor spins, then it will counter accelerate to nullify this torque. this way it will on...
by Ryuudan
Jul 08 2016 11:55pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 216
Views: 37872

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Theres somethings I have to disagree here. pouches are way more flexible in size than cylindrical cells. They can be made in any size. Manufacturers offer them in the sizes market demands and that's why you see usually a more common shape. So if you want to put as much juice as possible in a small s...
by Ryuudan
Jul 07 2016 7:15am
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 216
Views: 37872

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Well, pouches can take any form and shape and that makes them the most versatile. Cylindrical have a little higher energy density per weight, but not higher than density per volume. the number to beat is the 175Wh/kg of high end LiPos. just to remind Lithium polymer are li-ion usually with a 3.7V pe...
by Ryuudan
Jul 05 2016 10:07pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 216
Views: 37872

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

I heard Sony VTC line is discontinued and it was only available to OEMs in the first place making it impossible to prototype with them. Most VTC5 on the market are not legit, although they may be manufactured in the same place, they probably just kept making them despite sony not wanting them anymor...
by Ryuudan
Jul 04 2016 9:55pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 216
Views: 37872

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Thanks for the feedback. The 3D sketch is lacking the bridges to strengthen the torsion, when I put these the resistance increases a lot. they will be either welded in place or cast depending on the manufacturer and funds available. Also, putting more material sideways would only increase material s...