FLIPSKY Technology

DIY - Le skate électrique Choisir son matériel
61
It's the dual esc6? Hello please, go to introduce you Thank you
62

Je comprends pas trop le dual FESC…
Y’a qu’un DRV et un MCU pour 2 moteurs… Ca sera pas compatible avec le FW VESC ça.

63

Good morning, Sir. I just checked with our technician, our dual esc is compatible with FW VESC.
So could you tell me that why would you think like that?

64

Hi,
Thanks for having a look at our thread.
This is just a thought because on pictures, I can only see one MCU and one DRV for driving 2 motors.
I already digged into creating my own dual VESC using only one MCU (but still a DRV per motor, hence 2), but it’s way more complicated than only duplicate mcpwm.c files :lol:

So, could you confirm the HW setup on your board ? (if you’re willing to, you’re not obliged :wink: )

Anyway, as I told on our French e-riders Facebook group, I’m glad that a company makes some innovation into VESC project !
I follow VESC project quite closely now (participated to Beta program, made (merged) pull requests, and so on.) and there are not a lot of innovation into it.

What would be great (even mandatory) is to keep this project into an Open Source spirit and thus comply to the according licence by sharing your schematics.
Open Source and business are not ennemies ! :wink:

65

Hi, yes, I’ve been reading the thread since it’s created :lol:
And maybe it’s because the photo, but our dual ESC has two MCU and two DRV.
More photos shall be released tomorrow, I will post them here for your closer observation. :slight_smile:

66

Thanks for that Mr. Flipsky [emoji1305]

67

Hello, quelques news des dual FESC.

68

Thanks, Cedric.
And I know you guys can see the specs and features from our website, but I will just post here to save your step of page-jumping :smiley:

Specs:

  • Hardware: V 6.6
  • Firmware: VESC_default_no_hw_limits
  • Voltage: 8V - 60V (Safe for 3S to 12S LiPo) for the dual ESC - Voltage spikes may not exceed 60V
  • Current: Continuous 50A single, total 100A , Burst 150A per single for seconds, total 300A burst for seconds.
  • 5V 1.5A output for external electronics for single
  • 3.3V 1A output for external electronics for single
  • Modes: DC, BLDC, FOC (sinusoidal)
  • Supported sensors: ABI, HALL, AS5047
  • include Heatsink
    Features:
    1.Dual ESC can reach 100A big current, give your board strong power
    2.One PCBA board integrate two FSESC6 ’s function by internal CAN BUS circuit connection.
    3.The mater and slave board connection can be switched On/Off
    4.Common micro USB interface
    5.Include anti-spark switch function with LED button
    6.Preserve Bluetooth module and RF module connections for both master and slave board
    7.Tower PCBA with smaller size: 98.6102.819.2mm
    8.Aluminum anodized Heat sink with fins design for better heat dissipation, Heat sink size: 1006910mm

So here it’s, you guys are free to ask any questions. Oh, advice are also welcomed! :smiley:

69

Looks good, any idea of the price?

[EDIT] Trouvé le prix : 350$, offre de lancement à 300$ avec port offert.

70

Trouvé le prix : 350$, offre de lancement à 300$ avec port offert.

71

Yes, retail price is $350, but we’re having a promotion on it, you can get it with $300+free shipping. You may find the promotion on our Facebook homepage.

72

Thanks Mr Flipsky for the specs.

Still, I’m not confident with this kind of PCB stack.
I mean, separate power and control stages is a good thing though, but I do remember VESC 5 design made by Vedder.
His idea was to stack, as you did, because he wanted to get rid of EMI on the control part.
However, he had a lot of trouble with the DRV because it was too far from the Mosfet gates, creating transcient voltage issues.
So he ended up with the VESC 6 layout that lowers this distance (This layout also "inspired"Enertion for the FOCBOX).

Did you perfom a bunch of heavy tests in FOC 12S ? No DRV errors ?

73

Morning, Sir.
Actually my name is Iris, but Mr.Flipsky sounds adorable anyway. :smiley:
We don’t have test in FOC 12S yet, but we have done a lot of tests, including road test, in FOC 10S and so far there is no problem. But still, We will find some time to test our dual esc in FOC 12S.

74

If you got no time, or not sure to could try it soon, we could do it for you :smiley: haha
Thanks for your work and feedback here :wink:

75

Thank you!
Benji will test for us in the next week maybe. :smiley:

76

The best configuration for pushing those to the limit is a mountainboard, for sure !

77

Une monté de 700m de dénivelé en 12s Foc ça devrait aussi être un bon stress test . Au moins pour la question de la décharge continue. Après pour les pics c’est clair que la MTB sera plus adapté. En Lipo aussi ça peut être intéressant, les pics sont plus important du peu que j’ai compris.

78

Perso ce qui m’intéresserai c’est de les tester au delà de 60000 erpm. Donc je cherche des moteurs entre 220 kv ou 245 kV qui supporte le 12s. Pour l’instant j’ai vu les tunirgy sk8 mais j’ai pas encore vu beaucoup de retours.

79
Après pour les pics c'est clair que la MTB sera plus adapté. En Lipo aussi ça peut être intéressant, les pics sont plus important du peu que j'ai compris. Voilà, ce sont les variations importantes de duty cycle qui crament les DRV en FOC (transient voltage). Du coup en continu, ce sera pas super représentatif. Ca reste un bon test à faire, surtout pour la partie thermique, autre point faible des VESC (4.12) d'ailleurs !
80

@Riako j’étais parti pour le commander donc comme c’est toi qui doit me faire le boittier, je peux le faire envoyer direct chez toi comme çà tu peux prendre le temps de le tester, puis après tu enchainnes avec la construction du boitier. Je dois recevoir les condos du single fesc6.6 aujourd’hui. Et j’ai encore pas mal de test à faire en single (uphill notament et long range) La traction avant change tout en single et j’ai besoin de temps pour faire plus d’essais. En dual je compte rester en propulsion car on ne rencontre pas les mêmes problemes d’adhérance.