Low cost, public domain, stepper analyzer - season 2.
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@PCR do you still have spare boards and parts?
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@zapta I really love your project! Just what I was looking for!
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@PCR what part? QFN also or?
@zapta that's QFN
I need soic and taht's 2.5A I need 5A ..I'll probably go then with 5A regular HAL ACS712 .. it's not fancy GMR but regular HAL but at least I can get it easily .... I hoped I can easily get GMR version in soic8 package but..
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@zapta I'd like to get one of your boards, if you still have one. I sent a private chat message.
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@tenaja, don't have spare boards left but I can make a few for shipping in the US if there is a demand. It will be at cost, and you will need to order the TFT display from buydisplay.com yourself.
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Still have Boards. Will answer all PM today. Stressfull weeks... Sorry
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@PCR I will take one! (If you can ship to USA.)
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@arhi said in Low cost, public domain, stepper analyzer - season 2.:
@zapta that's QFN I need soic and taht's 2.5A I need 5A ..
SOIC is definitely easier to solder and I would love to find one.
I modified the QFN footprints on the board be easier to hand solder, having longer pads, somewhat similar to the Schmartboard boards.
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In SOIC parts, ACS724LLCTR-05AB-T is very good, much better than ACS712 in our experience. We use them in our latest automated test equipment.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 said in Low cost, public domain, stepper analyzer - season 2.:
In SOIC parts, ACS724LLCTR-05AB-T is very good, much better than ACS712 in our experience. We use them in our latest automated test equipment.
Thanks, I'll try to find them, I started using JLCPCB full service recently so I try to go with parts they have (and acs712 they do have on offer). will see what else is there but if I can get easily acs724 (issue with digikey is that shipping is rather expensive so I wait till I have a need for more parts to order something to spread the shipping cost on to more parts
as I pay same for 1 and for 1000 parts, same small box) locally I don't mind soldering them myself ... those QFN I really hate and if JLC had them it would be no problem as they would solder them on but ... they don't -
@zapta's stepper motor analyzer is the star of this Teaching Tech video! https://youtu.be/4iII25DGIdA
Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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@droftarts, he did a very good job IMO, precise and informative.
There are two analyzers shown in that video, one with the standard base and another with the enclosed case design. Functionality wise they are identical and the open frame design is easier to build and therefore the default option.
The enclosed case is documented in the link below but is more complex to build so I am not sure it worth it.
https://github.com/zapta/simple_stepper_motor_analyzer/blob/master/case_option.md
And the Onshape design is at https://cad.onshape.com/documents/146b8b994145177887407b23/v/c2dc7870c6f0bf989cd611b5/e/b6453eca2ba530476c30538a
BTW, how does your analyzer progress? Any problems?
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@zapta I sent it to Tony, who has the equipment and time to put it together! However, we’re waiting for screens to come from China. I think we’re going to use the 411 Blackpill, as the 401 seems unavailable.
Ian
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@fma Hello, Sorry to be so late getting on the bandwagon with this, but I would definitely buy the PCB and SMT components, even ALL the parts if possible. I live in Switzerland. Please let me know what you need from me to do this. Thanks so much!
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@zapta And now on Hackaday: https://hackaday.com/2021/04/23/stepper-motor-analyzer-reveals-all/
Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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@stepperanalyzer I don't think anyone is producing a kit at the moment. It's an open source project, so you can send the files to a PCB manufacturer and get them to populate the board for you. You'll probably have to find the Blackpill (the 401 version seems to be out of stock everywhere, but the 411 version is available) and the display yourself.
Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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Is @PCR still creating pcb's? I would like to get one if so.
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@droftarts said in Low cost, public domain, stepper analyzer - season 2.:
@zapta And now on Hackaday: https://hackaday.com/2021/04/23/stepper-motor-analyzer-reveals-all/
Teaching Tech video was a great help.
Now let's see some entrepreneur makes it available to the community, as is or a variant. Could be a great kickstarter campaign.
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@georgem Still have them
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Apparently the current version of the PCB leaves one of the TFT inputs (RD, pin 26) floating. If you encounter any problem, you may want to attach a pullup resistor as explained in the updated schema. https://github.com/zapta/simple_stepper_motor_analyzer/blob/master/kicad/stepper_analyzer-sch.pdf
BTW, I am working on a Raspberry Pico version. It will have a single board design similar to the Dustin Watts ESP32 Touchdown. With the shipping times from China, it will probably take a few months to be ready.
If everything will go as planned, it will have the exact same functionality but will be easier to solder (SOIC-8 current sensors), lower profile, larger mounting screw clearance, easier firmware update process, no external EEPROM IC needed, a more stable source for microcontroller modules, lower cost TFT module, and hopefully smoother display updates due to the larger RAM that fits an entire screen). However, it will have a micro USB connector instead of the existing Type C.
