Login

u/Calthecool

▲ 1 r/hyperebikes

PSA! Fardriver low voltage protect issue

When you have a controller set at a higher voltage and you want to use a battery that’s a lower voltage and you select the lower voltage and save, it doesn’t change the low voltage protect values. This just had me stumped for two hours because I selected 60v on a 72v controller, and it was only doing a couple amps because the low voltage protect was only one amp lower than the current charge of my battery. I just changed it to the correct value and it’s working now. Just thought I would post about this, if it solves even one person’s problem then it’s worth it.

reddit.com
u/Calthecool — 8 hours ago
▲ 1 r/hyperebikes

I have a motor that had an encoder but I decided to switch it to Hall effect sensors so I can use a hall sensor Fardriver controller I have. I installed them and wired them up and when I use my tester it seems like they are working, although the LEDs stay partially on. I checked with my multimeter and the 5v wire stays at 4.3v, and when I rotate the motor the sensor wires switch between 4.05v and 0v so I don’t know why the tester’s LEDs stay partially on.

When I do auto learn it seems to work fine, although the rotor has 20 magnets and it’ll just auto learn forever if I set the pole pairs to anything above 4 so that’s weird. When I set pole pairs to 3 or 4 it works but if I apply any load to it it will give me a Hall effect error.

Any ideas on what I should try next? I have used these Hall effect sensors in motors in the past so I know they work, plus I tested each one individually and I can see them switching from 0v to ~4v so I’m pretty confident that they are good to go.

Here’s a video link for clarification: https://youtube.com/shorts/Bv56U0jZ238?si=cKWZKM-ccP-NR72r

u/Calthecool — 11 days ago