Search found 98 matches

by Pedrodemio
Dec 09 2016 4:13pm
Forum: Motor Technology
Topic: Motor Design Software
Replies: 8
Views: 1494

Re: Motor Design Software

have you seen this? https://www.emetor.com/ MotorCAD is the industry standard for thermal analysis of motors but they now have an electromagnetic module that works in conjunction. All the commercial software is extrmely expensive. I would rough out the design in Emetor before choosing anything more...
by Pedrodemio
Dec 09 2016 8:38am
Forum: Motor Technology
Topic: Motor Design Software
Replies: 8
Views: 1494

Re: Motor Design Software

That would be a way, but my mais objective is to learn something new, if in the end i can make a good motor that's great, but if the motor its not so good but i know what to improve or where i've screwed, that's even better I've been following all the hubs on eboard section, from what i've seen from...
by Pedrodemio
Dec 08 2016 7:01pm
Forum: Motor Technology
Topic: Motor Design Software
Replies: 8
Views: 1494

Motor Design Software

Hello guys, I will shortly start a work in a research in my university to develop and manufacture a hub motor for electric skateboards, my goal is to optimize it as much as possible, since the application requires it or i will step on problems like overheating and huge consumption. So to the point, ...
by Pedrodemio
Aug 04 2016 12:47pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

This seems to be the same type i got when reading the serial while it is sending data to VESC And speaking on serial, finally everything works, rode my board a lot this last days, but today when i was implementing the battery capacity led's i realized i'm no getting any data back from VESC, anyone h...
by Pedrodemio
Jul 19 2016 12:59pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

[*]Funny thing, when everything seems to be going, something have to screw up Was on the verge of finishing the board again, testing on 10S for the first time, BLDC working, FOC working, and then on one of the accelerations on the bench the motor just made a high pitched sound and after rebooting it...
by Pedrodemio
Jul 11 2016 2:03pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

I'm using it with a few modifications for leds(was using, my board is down for a few months so far)

Try using the abs tachometer, any situation that makes the wheels go backwards? this would add negative distance if the abs is not used
by Pedrodemio
Jul 04 2016 9:15pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

I've checked here, the pulse number that i said, i'ts the motor poles*3, for a 14 pole motor that gives 42 pulses per rotation. As i understand, that's the number of sequencial phase activation to complete a full rotation. For the ERPM, i got RPM = ERPM*2/ Motor_Poles See if this works #define DIA_W...
by Pedrodemio
Jul 02 2016 9:26pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

rpm is the instantaneous rotational speed of the motor, tachometer is the number of pulses, or absolute number in case of abs_tachometer, the VESC has counted since powered on, in my tests i got 40 pulses per full rotation in a 14 pole motor, for speed you should use only the rpm and apply the corre...
by Pedrodemio
Feb 04 2016 4:30pm
Forum: Battery Technology
Topic: SAMSUNG INR18650-29E cycle test.
Replies: 63
Views: 12220

Re: SAMSUNG INR18650-29E cycle test.

DrkAngel,

Have you done a capacity mapping of the NCR18650B?

(http://lygte-info.dk/review/batteries20 ... %20UK.html)
by Pedrodemio
Jan 30 2016 12:21pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

Finally (almost) everything working

Getting data back and nunchuck app, shame that my motor support is bent and i can't teste the board for the next weeks
by Pedrodemio
Jan 29 2016 6:13pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

Just get Wh on the remote do have an accurate battery indicator Just saw that vedder merged your pull request on FW2.10, but unfortunately everything stopped working on this update, i'm not getting data back nor can i control the nunchuck app For it to work, i have to set the control method to Nunch...
by Pedrodemio
Jan 28 2016 11:08pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

After a few hours solved As soon i connect the Arduíno usb, VESC start dumping data on the rx port, the same port used for the upload of the new sketch :roll: The problem was that the code with Wh counting never had been uploaded, now almost everything is working, i'm still getting zero on battery c...
by Pedrodemio
Jan 28 2016 5:43pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

They are in int32 here, here's what i changed case COMM_GET_VALUES: ind = 14; //Skipped the first 14 bit. values.avgMotorCurrent = buffer_get_float32(message, 100.0, &ind); values.avgInputCurrent = buffer_get_float32(message, 100.0, &ind); values.dutyCycleNow = buffer_get_float16(message, 1000.0, &i...
by Pedrodemio
Jan 28 2016 5:23pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

Yes, just one question, i just have to add the wh and wh count on VescUart.cpp and datatypes.h right? i did that but everything past where i edited stoped working :lol:
by Pedrodemio
Jan 28 2016 3:28pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

I don*t know why I skipped them. They are exactly the 8 bits I skipped there. Maybe I wanted to save memory? I don't really need them. I calculate a battery by the used Ah. There 2 are ways to do it. One to add this 8 bits (I can do it when I can find the time for) or simply calculate Ah*V and you ...
by Pedrodemio
Jan 28 2016 2:16pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

Any lucky with your VESC? the faults command is not giving you anything? I'm finally getting data back from VESC and into the remote, thank you sir for this library :wink: Just one thing that i think is missing is Wh in and out, from my point of view is mandatory for coulomb counting fuel gauge, is ...
by Pedrodemio
Jan 26 2016 2:55pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Hill Gradients
Replies: 13
Views: 1105

Re: Hill Gradients

torque,

Could you make a video of you climbing that 30%? would love to see that
by Pedrodemio
Jan 21 2016 7:10am
Forum: Stand-up E-scooters and E-skateboards
Topic: Modular Battery System
Replies: 5
Views: 816

Re: Modular Battery System

Texas instruments has lots of option, it's a mater of finding whats suitable

http://www.ti.com/lsds/ti/power-managem ... rview.page

And

http://www.st.com/web/en/catalog/sense_ ... M142/CL848
by Pedrodemio
Jan 20 2016 1:47pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Modular Battery System
Replies: 5
Views: 816

Re: Modular Battery System

With a CAN bus or serial communication this is "relatively simple", each box has two high power and two rx/tx connectors on each side, onde male other female, this way you can stack as many boxes you want, each unity would act alone to balance and protectthe cells within, and the main module would b...
by Pedrodemio
Jan 19 2016 4:50pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Looking inside a Boosted Board
Replies: 60
Views: 20534

Re: Looking inside a Boosted Board

Its somewhere in a spreadsheet in the video, 14/50 , i'm still trying to figure out how they avoid belt slip, since its only 5 teeth in mesh, maybe the motor mounts are sturdier than mine

jacobbloy, whats the shaft diameter of the motors? with 14 teeth pulley i expect a maximum of 5mm
by Pedrodemio
Jan 19 2016 4:45pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Motor reaching 90°C, go 10S?
Replies: 25
Views: 2780

Re: Motor reaching 90°C, go 10S?

Didn't see your post. How did you go down? Previously i had made a PCB for the Arduíno and the NRF radio module, booth fixed with female pin headers, with the vibration the NRF got loose and the signal that the Arduino send to VESC gone crazy, and VESC gone crazy because that and gave full brake an...
by Pedrodemio
Jan 19 2016 9:36am
Forum: Stand-up E-scooters and E-skateboards
Topic: Looking inside a Boosted Board
Replies: 60
Views: 20534

Re: Looking inside a Boosted Board

Great video, i would love to get my hands on a pair of this motors, lightweight and more than sufficient for most of the situations

Due the small mass i think with long hill the power may be limited to avoid overheating, any experience on that?
by Pedrodemio
Jan 18 2016 4:56pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Motor reaching 90°C, go 10S?
Replies: 25
Views: 2780

Re: Motor reaching 90°C, go 10S?

Update i'm with VESC for some time, limiting the current did nothing to prevent the overheating, as expected, but today i tested with the 230KV motor, awesome, still using the 50/28 gearing since i was not able to order the pulley anywhere, apparently is is way cooler, as soon as possible i will do ...
by Pedrodemio
Jan 17 2016 9:33pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

Good to hear

Is there any way you could upload the compiled version for hw 4.10? I have no idea how to do that and wouldn't like to brick my vesc trying
by Pedrodemio
Jan 17 2016 1:51pm
Forum: Stand-up E-scooters and E-skateboards
Topic: OpenSource Remote for VESC ArduBoardControl
Replies: 263
Views: 37986

Re: OpenSource Remote for VESC ArduBoardControl

The 2.8 that you are using is the vedder original or the modified version? i'm in 2.8 and UART is working, just to be sure try this delay in the start, maybe something changed and it's causing all the problems