Search found 1315 matches

by circuit
Aug 01 2020 3:20am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

The protocol is used by TinyBMS to use android apps, designed for cycle analyst. Actual interconnect ob TinyBMS and cycle analyst is not possible and not needed, as TinyBMS calculates SOC by itself.
by circuit
Jan 16 2020 5:26am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

john61ct wrote:
Jan 15 2020 3:18pm
Huh?

I meant to these
circuit wrote:$15 PCM from aliexpress? Those are fine for many DIY builds, I use one myself on a cheap kick scooter.
Sorry if that was not clear
Just google it. There are plenty of colors and flavors, down to $3 a pop.
by circuit
Jan 15 2020 1:28pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Thank you for your feedback, however, again, this is not a DIY or hack-oriented product. Which is kind of hilarious, considering you've built a Swiss Army knife. Why would ANY OEM get a Swiss Army knife at a premium, when they need just a box cutter ? Don't get me wrong, it's your business and you'...
by circuit
Jan 15 2020 12:37pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Fusing is a good idea in case there is short between wires. Fuses should be located close to cells, rated at 200mA.
There will be no negative impact AFAIK, only slightly higher build cost.
by circuit
Dec 30 2019 4:43am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

hary, just out of curiosity... Would you mind pointing out to the questions I asked and answers given? Because I remember presenting the product at it's initial release and asking what extra features you, the community, would like. Some of suggestions were implemented. I have not, however, asked how...
by circuit
Dec 29 2019 12:03pm
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

circuit. That's right that the 45€ shipping cost seems just too excessive. The uninsulated USB/UART CP2102 cable or the BT module are also sold at high prices, and it is not clear if as DIY they can be replaced by cheap ones from Ebay (by the way where insulated USB/UART cable can be found for chea...
by circuit
Dec 28 2019 7:43am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Merlin, I really can't comment on what happened there, but if your company will be revisiting the search of BMS, please give us a second chance, as it sounds like there may have been a miscommunication of some sort. The company grew over the years and there are several sales/support reps out there, ...
by circuit
Dec 28 2019 6:07am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Merlin, I don't know what went wrong in your particular case and really sorry to hear you had issues... In case of warranty repair, we always do it free of charge, however I also need to point out that fail rates are very low on this BMS. It's a fairly complicated product and most returns are due to...
by circuit
Dec 26 2019 5:15am
Forum: Battery Technology
Topic: Yet another BMS
Replies: 74
Views: 14202

Re: Yet another BMS

LOL, I see I have answered without checking the content of this thread, as I also follow other topic with similar title. Sorry, can't comment on this one. It looks dead like every other DIY/open BMS project out there. BMS is actually much more complex thing than it looks from first impression, reaso...
by circuit
Dec 24 2019 8:39am
Forum: Battery Technology
Topic: Yet another BMS
Replies: 74
Views: 14202

Re: Yet another BMS

EDIT: answer removed due to wrong topic with same title...
by circuit
Dec 02 2019 9:21am
Forum: Items for Sale - New
Topic: Yet another (?) Smart BMS?
Replies: 121
Views: 20776

Re: Yet another (?) Smart BMS?

Please send all technical questions to EnergusPS support: support at energusps dot com
Inquiries go to sales at energusps dot com
Thank you.
by circuit
Nov 29 2019 11:12am
Forum: Motor Technology
Topic: STSPIN devboard
Replies: 5
Views: 1034

Re: STSPIN devboard

The hardware, including internal peripherals of the MCU, is very capable. However software implementation and level of support we get is just shit. Very disappointed...
by circuit
Nov 28 2019 11:47pm
Forum: Motor Technology
Topic: STSPIN devboard
Replies: 5
Views: 1034

Re: STSPIN devboard

No..
by circuit
Sep 30 2019 8:56am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Well, people, who are using Linux as their daily driver, usually don't mind the pain, they enjoy it!
by circuit
Sep 30 2019 7:34am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Note that bluetooth can also be used for PC connectivity. You just need to pair your devices (virtual com port will appear in device manager).
by circuit
Sep 28 2019 8:59am
Forum: Items for Sale - New
Topic: 5-16S Smart Tiny BMS preorder - 30/150/750A rated
Replies: 245
Views: 46860

Re: 5-16S Smart Tiny BMS preorder - 30/150/750A rated

Hello everyone. If you want to debug your battery pack, there's an "official" way. BMS collects statistics and many limit values, including min cell voltage, max voltage, max current and max voltage difference between cells. So, before testing, simply use windows app to clear statistics and have a r...
by circuit
Jun 05 2019 10:19am
Forum: E-Bike General Discussion
Topic: variable regen throttle and controller for ebikes.
Replies: 34
Views: 6543

Re: variable regen throttle and controller for ebikes.

Not what one would call competetively priced...
by circuit
May 24 2019 11:28pm
Forum: Motor Technology
Topic: Steel-geared hub motor?
Replies: 126
Views: 24891

Re: Steel-geared hub motor?

These are not helical and wil be loud as hell...
by circuit
May 23 2019 8:32am
Forum: Items Wanted
Topic: Wanted: 6 inch hub motor (pics)
Replies: 1
Views: 498

Wanted: 6 inch hub motor (pics)

Need one like this, in EU.
Or, ideally, with pneumatic tire.

Image
Image
by circuit
Apr 18 2019 11:26pm
Forum: Motor Technology
Topic: Steel-geared hub motor?
Replies: 126
Views: 24891

Re: Steel-geared hub motor?

I used a TIG machine (which is a precision instrument in welding world) to place a bead around shaft.
by circuit
Apr 18 2019 2:06pm
Forum: Motor Technology
Topic: Steel-geared hub motor?
Replies: 126
Views: 24891

Re: Steel-geared hub motor?

I have welded my bafang. All fine.
by circuit
Apr 13 2019 6:01am
Forum: Motor Technology
Topic: STSPIN devboard
Replies: 5
Views: 1034

STSPIN devboard

Did not find any references on the forums. Anyone tried ST's STSPIN3201 devboard? It has a cheap hardware, fully capable of sensorless startup and torque control for traction applications. I am now playing with their motor control workbench, and got the motor spinning, but just barely. It stops when...
by circuit
Nov 26 2018 5:35pm
Forum: Motor Technology
Topic: Turnigy Rotomax good pair with PowerVelocity controller?
Replies: 9
Views: 1880

Re: Turnigy Rotomax good pair with PowerVelocity controller?

Why dont you just source one of the purpose made 48v "Altermotors" that GM fitted to various vehicles over the past 10+ years. They are 10-15 kW depending on the model year, and are readily available cheaply in dismantler yards. https://endless-sphere.com/forums/viewtopic.php?t=31584 Much simpler a...
by circuit
Nov 24 2018 12:11pm
Forum: Motor Technology
Topic: Turnigy Rotomax good pair with PowerVelocity controller?
Replies: 9
Views: 1880

Re: Turnigy Rotomax good pair with PowerVelocity controller?

Rotomax 150cc is the best RC motor I have seen: perfectly balanced and has an induction of 17μH, which is perfect for ebike application. I had a predecessor Turnigy CA-120 (5μH), which was very difficult to drive, controllers went in smoke, etc: https://www.youtube.com/watch?v=Gl4X1dRAdQQ I am writi...