Search found 5068 matches

by izeman
Jul 25 2020 3:35am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

ted_do wrote:
Jul 24 2020 1:05pm
I posted also a video on YouTube®.

https://youtu.be/SmU33wBe4pc
I hope it could be interesting for some users.
Thanks. Looks excellent and goes well with the "old" design.
by izeman
Jul 12 2020 2:42am
Forum: Stand-up E-scooters and E-skateboards
Topic: Scootabot
Replies: 56
Views: 10363

Re: Scootabot

You mentioned that you used 5xxx alloy. Afaik this needs to be heat treated. Just in case you didn't know that.
by izeman
Jul 07 2020 10:54am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7647
Views: 794866

Re: New "TSDZ2 Torque Sensor Central Motor"

As an example: on a 900m hill, with 60m of climb (i.e. quite steep), it gets to 70c going up, after that I can only use 150-200w or the temperature goes up more. It also takes quite a while to cool down again. This is how 250W nominal (aka EU-legal regulation) is defined. It will do 250W all day. T...
by izeman
Jun 12 2020 7:52am
Forum: E-Bike Technical
Topic: JST-SM Crimp Tool
Replies: 39
Views: 3826

Re: JST-SM Crimp Tool

imho those are the best crimpers you can get: http://www.amazon.com/Engineer-PA-09-Micro-Connector-Crimpers/dp/B002AVVO7K/ref=sr_1_1?ie=UTF8&qid=1432123464&sr=8-1&keywords=jst+crimp+tool they make excellent crimps. no ratching mechanism or other goofy stuff. just plain crimping. but high quality st...
by izeman
Jun 05 2020 2:34am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7647
Views: 794866

Re: New "TSDZ2 Torque Sensor Central Motor"

... I store my ebikes in the house so oil won't be the solution for me. ... I agree. I always hated my ice mopeds for leaking all kind of fluids (gas/petrol, oil, cooling fluid ...) and now that we have clean electric motors we start to bring that hassle to them? Seems like a bad idea. Still I'm in...
by izeman
Jun 05 2020 2:15am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

cavi wrote:
Jun 04 2020 4:12pm
Yeah, I read that and it is still Greek... ok so it feeds power even if the cadance goes over what would be the normal max?
Basically yes. The motor runs faster than it would normally with the given voltage.
by izeman
Jun 04 2020 10:40am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

I'm use my battery the same way you do. I don't like keeping it charged so I often charge it to 60 or 70% unless I realy need a full charge My bms is bluetooth so I prefer to use the app to have an accurate soc reading. The accuracy given by this smartbms could easily acchieved (at least for li-ion...
by izeman
Jun 02 2020 10:41am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

If this is indeed how the so-called SmartBMS does it's SOC calculations then they are not so smart after all. I am used to batrium, and an outback FlexnetDC, both measuring all power in and out of their respective shunts, so I just assumed the SmartBMS did the same. Hmmm.... back to voltage based S...
by izeman
Jun 02 2020 8:25am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

The BMS has a much better idea of the SOC, because the charger connects to the BMS. So for people who hover their SOC between a certain percentage window, the BMS will always give a better indication of SOC. The TSDZ2 knows nothing of the aH going back into the battery so it cannot account for them...
by izeman
Jun 02 2020 6:24am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

HughF wrote:
Jun 02 2020 5:39am
The smart BMS doesn't have a shunt? Lame...
Sure it has. For charge and for discharge. But the TSDZ2 can measure current as well.
My point was, that the BMS has no better knowledge of SOC than the TSDZ2 can have (it knows SOC per cell, but we don't need that info for a general SOC-bar-meter)
by izeman
Jun 02 2020 5:27am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

One of the benefits of the ANT+/BTLE project that Casainho is working on would be the ability to move the %SOC tracking to a SmartBMS and read that value over the Bluetooth connection into the NRF PCB... Full %SOC tracking would then be possible on charge and discharge. I use the Bluetooth SmartBMS...
by izeman
Jun 02 2020 3:46am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7647
Views: 794866

Re: New "TSDZ2 Torque Sensor Central Motor"

... I also noticed that my 750w tsdz2 48v 624wh is slow and weak compared to a 250w brose or 250 shimano steps 8000 motor in boost. Don't mix up nominal and peak wattage. That's all about legal stuff. EVERY pedelec motor available today BOOSTS around 600-900W. Still they are 250W nominal. The 750W ...
by izeman
Jun 02 2020 2:54am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

This handling is not ideal but I guess it's the only one possible if you don't have a smart BMS that communicates with your display. If that really is the case, then i'd call it useless (for my application). For battery life, I very seldemly charge to 100% (or even 90%). I try to keep my SOC at 50%...
by izeman
Jun 02 2020 2:33am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Yes, go ahead and improve the information that could help you and then it will help the next ones. I'm just doing it. One more question: Does the firmware build an internal table to compare voltage and SOC once it's done one full cycle? Or do you need to always recharge it to reset to counter and s...
by izeman
Jun 02 2020 2:19am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

you need to find a sweet spot to reset the battery state to 100%. For example fo my 36V battery it is around 42.5V. It is approximate and really depends on the battery configuration,age of the battery (internal resistance) and the temperature. Once battery is reset to 100% the FW starts to calculat...
by izeman
Jun 01 2020 3:30pm
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Did you read my whole post and other's? Opening SOC sub menu leads to a crash. And still i don't see what needs to be setup to avoid my problem. I can set Wh used and reset voltage. And those values have been set before. So the only thing i can imagine (as it's not described elsewhere) is that you ...
by izeman
Jun 01 2020 1:01pm
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Did you read my whole post and other's? Opening SOC sub menu leads to a crash. And still i don't see what needs to be setup to avoid my problem. I can set Wh used and reset voltage. And those values have been set before. So the only thing i can imagine (as it's not described elsewhere) is that you n...
by izeman
Jun 01 2020 11:26am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

PS: A little more help where to look in that wiki mess, and sorry to say that, it's a mess, would be highly appreciated. I know how hard it is to write a manual/wiki, but the TSDZ2 wiki has information spread all over the place. To find what you are looking for, you can: - read the Table of Content...
by izeman
Jun 01 2020 11:08am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Since I upgraded to 1.0 there are "slight" differences between what my BMS knows about SOC and what 850C THINKS about the battery. I don't know where this comes from. I haven't found anything about battery calibration. You need to do your work and read the configurations page. I would have bet a mo...
by izeman
Jun 01 2020 10:53am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Since I upgraded to 1.0 there are "slight" differences between what my BMS knows about SOC and what 850C THINKS about the battery. I don't know where this comes from. I haven't found anything about battery calibration. You need to do your work and read the configurations page. I would have bet a mo...
by izeman
Jun 01 2020 10:52am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

People say you must have brake sensors, personally I think it's fine to just hold the bike on the brakes and rest a little pressure on the pedal*, no different to a hill start in a manual transmission car. You soon get used to the behaviour. I'll go on record and say I don't have brake sensors inst...
by izeman
Jun 01 2020 10:44am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Since I upgraded to 1.0 there are "slight" differences between what my BMS knows about SOC and what 850C THINKS about the battery. I don't know where this comes from. The battery is set to 14S, but even at 16S it shows 90%+ which obviously is completely wrong. The LVC is set to 42V (3.0V per cell) ....
by izeman
Jun 01 2020 8:44am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

By the way: i tried to use the walk assist function for that purpose, it was my impression that it did work..i am not sure though...i was kind of busy getting the bike going on my hill... :mrgreen: :lol: Walk assist is NOT intended for riding the bike. Power is very much reduced as you're not meant...
by izeman
Jun 01 2020 8:37am
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

Assist without pedal rotation works, kind of. But it is buggy. And it also seems to give a variable amount of startup assistance depending on the assist level you are in. Which I guess is to be expected... For me, it seems to take some time after the pedals have stopped before it becomes active aga...
by izeman
May 31 2020 12:41pm
Forum: Motor Technology
Topic: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)
Replies: 6101
Views: 413090

Re: TSDZ2 mid drive with 860C, 850C or SW102 displays only -- Flexible OpenSource firmware (Casainho code only)

And it seems I can't make the motor engage at zero speed. It is even "worse" - the motor needs at least 60W human power to even engage - but human power only goes up during pedaling. What do i oversee? Yes, motor startup without pedaling a bit (make motor rotate, easy motor startup form 0 speed) is...