Endless Sphere

casainho wrote: ↑

Oct 10, 2018 12:27 pm

I started documenting Bafang 850C color display, the JTAG flash/debug pins are easy accessible just like on KT-LCD3 display:

At Interbike a saw a new version of the 750C that has Bluetooth built-in. They said it is now shipping.

Hi people: Can I get a confirmation that on the 6 pin speed sensor it is a white wire 5V input and the Black wire SWIM is Switched Magnet (permanent on/continuity but the magnet at about 12mm switches it OFF) as I have zero speed display and I'm trying to de-bug this. The main thing I needed to kno...

Hi everyone, https://www.aliexpress.com/item/Bafang-8fun-Extension-Display-Cable-Extend-to-Electric-Bike-Drive-Crank-Mid-Motor-Kits-For-BBSHD/32861521269.html?spm=a2g0s.13010208.99999999.269.5f423c00wU5ZL3 I thought this cable might come in useful for connecting the lcd3 to the tsdz2. Good price to...

Can you please ex[lain how to you program them? what is the software (please show screenshot)? do you need to press any button on the LCD to program? -- I am trying to understand if it uses a custom bootloader or the factory UART bootloader of STM32. The bootloader (Burn Tool) is custom that they p...

I am very familiar with the 750C, 850C, and 500C color displays. The 750C has a horizontal orientation like the LCD3, The 850C is vertical and the 500C is smaller with a horizontal orientation and up/down/power buttons built-in to the display. The 500C is great for a more discrete/stealthy build or...

I am very familiar with the 750C, 850C, and 500C color displays. The 750C has a horizontal orientation like the LCD3, The 850C is vertical and the 500C is smaller with a horizontal orientation and up/down/power buttons built-in to the display. The 500C is great for a more discrete/stealthy build or ...

Does someone want to test a very early firmware for the XH18LCD, to be used with the opensource TSDZ2 firmware (as an alternative for the LCD3)? Ideally someone who already has a working LCD3 for comparison (me not). I have a few extra XH18's available. Can they be programmed back to the original f...

Would it be possible to use a generic KT-series or other controller with the TSDZ2? It seems like that would provide a lot of the features of the open-source software. Most of those controllers do not have provisions for torque sensor input. Prior to the open source project, I was looking at the CA...

casainho wrote: ↑

Sep 14, 2018 12:35 pm

I am implementing the time and distance of the ride. Can you guys tell me what do you expect for the ride time: 1. Time since system is powered on OR 2. Time counted only when wheel speed > 0.

I would find #2 the most useful.

Hello again, after 4 days I received the e-mail from st.com to download the file, I made the flash to kt lcd3 successfully, but only with version v 0.6 hex !!, when trying the flash with the v.0.9 hex gives an error "Line 7: not in Intel format". What can cause this error? Thanks Best regards I had...

I will install it on a bike tomorrow and then if all goes well I will flash a coaster brake TSDZ2 for a handcycle later this week. Hmmm... I am not sure it will work well for TSDZ2 coaster brake.... please share your experience later!! Also some pictures if possible. just curious ... what are your ...

I just successfully wired and flashed an LCD3 display and a 48v TSDZ2 motor with the Flexible Opensource Firmware. Following the wiki and Jbalat's videos, it was fairly straightforward. It helped to be warned about the STM8S105x6 instead of STM8S105x4 in the STLink configuration, right-clicking the ...

My thoughts are along the same lines. I monitor this forum for information that is practically non-existent coming from the manufacturer. Together we have helped each other figure out how to diagnose and fix many problems. Jbalat not only figures this stuff out but then shows us all how to do it wit...

I have just installed a brand new 36v/350w-tsdz2 and have a serious noise/hum coming from the motor. It sounds like a tortured mini-toycar if you ever heard them motors. Video for sound: https://www.youtube.com/watch?v=OF99aYNa3WI I'm no expert, but that does not sound like a frame vibration induce...

What completely eludes me is why so many people seem to feel that the motor needs to be more responsive with the assist mode. I would think that anyone caring about precise and immediate responsiveness should be using a throttle What completely eludes me is that someone who would ask that question ...

1.2 - I am thinking in put that limitation only when you press the pedals and ebike wheel speed is 0, is that ok? Wheel speed is not ideal because there is only one pulse per revolution and that is highly variable with pedaling based on what gear you are in. There are a lot more PAS pulses. Why not...

Perhaps 0.4 battery Amps, now on same 0.4 scale as battery Volts? 0x0Dh = 13 , 13 x 0.4A = 5.2A , 5.2A * 48V = 250W I think you may have nailed it once again. The motors with 0x0Dh were 48v 250W. So I think the .4 scale could be right. 250 watts is the highest wattage TongSheng will sell the coaste...

Yes, we are expanding the application of TSDZ2!! And why not???? A paraplegic using TSDZ2 on an hand bicycle, installed by user Rydon: Jeff is actually classified as a quadriplegic. The location of his spinal cord injury from a mountain bike accident left him with 50% biceps and 35% triceps and no ...

I've got eyebicycle's programming guide. ... It seems pretty thorough, but I disagree with his conclusion that the number located at (4002) is battery amps in binary coded decimal. 0x14h may not mean 14A, with a 1:1 ratio. Over a limited range, it may measure deceptively close... I can confirm that...

Being able to adjust the amount of power at different ranges of torque would be a great feature for the open source firmware project. Weaker riders whether from age or disability can then get the full benefit of the electric assist without strenuous effort and it would work on regular TSDZ2's as we...

Discovered something interesting on torque sensor calibration using the coaster brake version of the TSDZ2. Since the coaster brake version does not freewheel pedaling backward but engages the chainring in reverse like a normal bike, if you have a coaster brake you can apply backward torque while st...

eyebyesickle wrote: ↑

Aug 09, 2018 12:53 am

Anyway, I can post the pinout conversion etc if anyone wants to use a BBS harness with the TSDZ2 - it was a bit more of a pain than I anticipated!!!

Yes, please post the pinout! Also, is there a source for the female connector?

And oh, nice work! I have been thinking of doing the same thing.

Hi, I know some people have had problems with '52v' units not actually being 52v etc... I drafted up a little programming manual for someone, maybe more people can get some use from it. It goes from making the programming cable, to installing and configuring the software (for windows) to the actual...

casainho wrote: ↑

Jul 02, 2018 4:02 am

I just added a section about blue nylon gear and metal gear, as also a section about brakes.

https://github.com/OpenSource-EBike-fir ... i/wiki/FAQ

Good stuff Casainho! Thanks! I can't help with the coding but I can help with the wiki. Let me know.

The strength of this motor is also it's weakness. It is able to produce waay too much torque at low speeds. It is this torque that is killing the blue gear. So, I think it would be very useful to add som sort of torque limiter to the controller. The Bafang configuration tool has 2 modes for the thr...