uniler Posted May 29, 2017 Share Posted May 29, 2017 I have an old generic wheel that I am planning to convert to run my trike. I have realized that using the stock board and sensors won't work because the trike is already balanced so getting it to accelerate would be difficult leaving the controls touchy. I'm wondering if i can run the motor directly off the battery or if I'll have to make a board to handle the bms or other essentials. 1 Quote Link to comment Share on other sites More sharing options...
Carlos E Rodriguez Posted May 30, 2017 Share Posted May 30, 2017 NO. YOu would need to purchase a BLDC (Brushless DC) e-bike controller to run the Three phases of the motor. I dont think they are too expensive. You will have to know how many volts is your motor running at and how many watts. I put a sample image. 2 Quote Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted May 31, 2017 Share Posted May 31, 2017 Buy a BMSBattery S series controller that will almost for sure run your motor - and they are very cheap. As bonus, I am developing OpenSource firmware for that controllers and there is now a lot of technical information about this controllers, for modding/hacking :-) 2 Quote Link to comment Share on other sites More sharing options...
uniler Posted May 31, 2017 Author Share Posted May 31, 2017 9 hours ago, electric_vehicle_lover said: Buy a BMSBattery S series controller that will almost for sure run your motor - and they are very cheap. As bonus, I am developing OpenSource firmware for that controllers and there is now a lot of technical information about this controllers, for modding/hacking :-) Awesome, those are cheap. So any controller that starts with an S? Also, do you know if I need a square wave or sine wave? Quote Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted June 1, 2017 Share Posted June 1, 2017 Sinewave - this ones needs hall sensors and I am also developing the firmware r them. See the technology documentation here: https://opensourceebikefirmware.bitbucket.io Quote Link to comment Share on other sites More sharing options...
uniler Posted June 4, 2017 Author Share Posted June 4, 2017 Ooh, i don't know If my unicycle has any hall sensors. Quote Link to comment Share on other sites More sharing options...
Carlos E Rodriguez Posted June 4, 2017 Share Posted June 4, 2017 I am almost certain your wheel has Hall effect sensors. Simplest method to measure rim rotation at very slow speed. 1 Quote Link to comment Share on other sites More sharing options...
Rizella Posted March 9, 2021 Share Posted March 9, 2021 Hi all, Did you guys get this working at all? I've been thinking about converting an electric unicycle into an ebike for the wife as it has a lot more power and range than other ebikes for the price. Quote Link to comment Share on other sites More sharing options...
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