Lz Lee Posted June 28, 2016 Posted June 28, 2016 The new model : 40A MOSFETs: 12 pcs speed : NO limit. if the motor support speed 100 km/h, you can ride 100km/h ******************************************************************************************************* Spec.: SEQ. functions parameters 1 MOTOR 14"/16" / 18" 800-1500W 2 soft start yes 3 electric accelerator yes 4 electric brake yes 5 Leds light stripes yes 6 DC12v Output yes 7 wireless stopwatch yes 8 physical calbration yes PS. all suggestions are appreciated.
Hunka Hunka Burning Love Posted June 28, 2016 Posted June 28, 2016 No no speed limit? 100 KPH? Niiice! I can almost sense @EUC Extreme and many others starting to drool... I hear that Freeman uses dual gyro sensor chips on their boards. Do you think there is any advantage to having two gyro sensors either for redundancy or accuracy of readings? Also the main issue with control board problems appears to be due to cooling problems with the mosfets. With 12 that should be reduced, but is it possible for a future design to have the mosfets on a separate board with a wire connector so placement of the heatsink can be placed in a more convenient location for cooling purposes? People have done it ( @Polpus ) by desoldering the MOSFETS and wiring up a cable to reconnect them to the control board. He was able to place them in a different location for space reasons, but some people would like to place the MOSFETS in a cooler location so a small separate PC MOSFET board would be advantageous. It would also facilitate ease of repair if a MOSFET burns out. You don't have to replace the entire control board. Any HC-05 Bluetooth capability? Ooh I see the BT header there... Is this board capable of being programmed (say from an APP) in the future to work with ANY electric motor as long as the user knows how many coils / poles / magnets they have and what wattage the motor is rated at? So if I had a Gotway Msuper, and I wanted to swap the Gotway controller out for a Microworks board with no speed limit, as long as I had a battery capable of going 70 KPH for example, I could program the electric motor specifications into the MW board and have at it? But hold on a sec, maybe the motor is only capable of 45 KPH or is speed more a limit of the controller and batteries than the motor itself? The next obvious question is will MW be producing a motor capable of 100 KPH? PS: It would be nice if the APP could change the orientation setting of the gyro so instead of needing to release the firmware into the wild, just a setting change would be required for horizontal versus vertical placement of the controller board.
EUC Extreme Posted June 29, 2016 Posted June 29, 2016 The circuit board, it seems that it is no different than any other 12 FET circuit. 1500W is not enough even close to that could run 100 km / h. Apparently, however, this can be used above rated voltage. Does not convince me so much that I would go to try. The actual circuit board should be much more robust to score, and it should be used much larger than the voltage of 100V. 134-168V might have been pretty good Then I could start to buy lipo batteries and to make the frame. I do not because of this
Hunka Hunka Burning Love Posted June 29, 2016 Posted June 29, 2016 Well you might just have to wait for the Microworks 50A board which can handle 60 -180V with a built in power transformer and speeds up to 100 kph. Hopefully that 3000 watt electric motor will also be coming down the production line...
lizardmech Posted June 29, 2016 Posted June 29, 2016 Which mosfets are used? Can users change motor type and wheel size or must be changed when ordering? 67V only or can you set voltage and low battery voltage?
electric_vehicle_lover Posted July 1, 2016 Posted July 1, 2016 @Lz Lee what I hope is that the board keep using the same family of STM32 microcontroller. And since features depends also from the firmware, I hope you choose a microcontroller with more flash memory to hold more features in future - since I will do the firmware for this board. Also is very important Bluetooth and free pins for expand the hardware features, like I just did by adding RGB LED bar to the 30B4 board. I really like to see on this board the LED bar control, the 12v 2A max output and some headers that seems to be ready for an eexpansion board. With the 12v output, accelerator and brake, you seem to target also Ebikes, eskaters, etc. Which is great because there will be even more interest on an OpenSource firmware :-)
electric_vehicle_lover Posted July 3, 2016 Posted July 3, 2016 I just finished my MOD to add RGB LED strip to MicroWorks board. I guess this will also work with 40A board :-) I really like this new 40A board from MicroWorks because it will be "hackable" for our MODs :-) More information here:
Lz Lee Posted July 9, 2016 Author Posted July 9, 2016 On 2016/6/29 at 0:36 PM, EUC Extreme said: The circuit board, it seems that it is no different than any other 12 FET circuit. 1500W is not enough even close to that could run 100 km / h. Apparently, however, this can be used above rated voltage. Does not convince me so much that I would go to try. The actual circuit board should be much more robust to score, and it should be used much larger than the voltage of 100V. 134-168V might have been pretty good Then I could start to buy lipo batteries and to make the frame. I do not because of this I think we don't produce an EUC speed up 100 km/h. That is not responsible for life. That just an instance. We can do a mainboard without speed limit as long as the motor can increase speed and power. current about 180A
EUC Extreme Posted July 9, 2016 Posted July 9, 2016 What is the maximum voltage that this circuit board can be used?
Lz Lee Posted July 9, 2016 Author Posted July 9, 2016 37 minutes ago, EUC Extreme said: What is the maximum voltage that this circuit board can be used? 60V working voltage as before.
Lz Lee Posted July 9, 2016 Author Posted July 9, 2016 On 2016/6/29 at 3:28 PM, lizardmech said: Which mosfets are used? Can users change motor type and wheel size or must be changed when ordering? 67V only or can you set voltage and low battery voltage? yes, we can adjust programmings for different size motor. because different programmings for different size motor. generally, we use 67.2V. if you need another voltage, we also do that /( but MOQ=500 pcs)
Hunka Hunka Burning Love Posted July 12, 2016 Posted July 12, 2016 Can this Microworks 40A board work with your 22" electric motor? http://wholesaler.alibaba.com/product-detail/Hot-sale-brushless-motor-electric-22_60238312968.html
electric_vehicle_lover Posted July 12, 2016 Posted July 12, 2016 I think that motor is for a scooter not an EUC. I think EUC motors may have more poles to have more torque and rotate slow, less torque riple when motor moving very slow to balance.
RolluS Posted August 17, 2016 Posted August 17, 2016 Hi @Lz Lee Is MicroWorks the manufacturer of this GotWay board? I've been told there were 12 Mosfet (which are installed by group of 6 each sides) and a microfuse.
lizardmech Posted August 18, 2016 Posted August 18, 2016 Did they release this? Haven't seen it on their alibaba page.
RolluS Posted August 18, 2016 Posted August 18, 2016 IDK I was asking. The pic comes from a french shop, that's the latest gotway board
electric_vehicle_lover Posted August 18, 2016 Posted August 18, 2016 You can also ask to guys from GotWay, like @Jane Mo.
lizardmech Posted August 19, 2016 Posted August 19, 2016 The gotway one is different, doesn't have a capacitor for each phase. They are similar though, both have the same current sensing layout and MCU.
RolluS Posted August 20, 2016 Posted August 20, 2016 Thank you @lizardmech. Are both manufactured by a different factory? On earlier versions, and to my eyes, there were lot of similarities also..
lizardmech Posted August 20, 2016 Posted August 20, 2016 2 minutes ago, RolluS said: Thank you @lizardmech. Are both manufactured by a different factory? On earlier versions, and to my eyes, there were lot of similarities also.. I think they are all upgrades of an older ebike controller. The first gen didn't even have mosfet gate drivers. The next gen had gate drivers and in phase current sensing but similar layout. I don't know who made that one, maybe gotway or IPS. This new microworks one looks to use similar components but with a different PCB layout. The only totally different one is the firewheel controller, it was made by a company that sell industrial and servo drives, they just reused most of their own design.
Rehab1 Posted August 20, 2016 Posted August 20, 2016 I would not be proud if I manufactured that board. There are better ways of securing the mosfets and connectors from vibration without using gobs of unsightly silicone drapped across the board.
electric_vehicle_lover Posted August 21, 2016 Posted August 21, 2016 I am looking to get their new board -- I am now developing firmware for their 30B4 board and the board is simple and "clean", very good for development and repair :-)
Jane Mo Posted August 23, 2016 Posted August 23, 2016 On 2016/8/19 at 4:08 AM, electric_vehicle_lover said: You can also ask to guys from GotWay, like @Jane Mo.
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