Anybody wants a stepper motor analyzer?
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I'd like one too
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It sounds like the first run might be sold out, but I am interested too.
What other features does it provide, besides the steps/s shown?
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Count me in when you go for the second run
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JLCPCB rejected the PCB order since one of the footprints was incorrect. I fixed it and increased the order to 20 PCBs. This run will still be of only 10 units (only 10 LCDs and Picos on order) but it will be easier to make the next 10.
This is the first order with this PCB layout so I don't want to commit to too many before validating it.
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I would like one too!
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@zapta I would like one too.
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I think the first batch is already gone, but if you go for a second batch, I would like to order one analyser.
Thanks!
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If everything will go as expected (JLCPCB assembling most of the components), it shouldn't be too difficult for me to assembled them and I should be able to make larger batches. Let's see how the first batch of 10 will go and if they will work well.
BTW, it's a bank holiday here today so I updated and released all the files https://github.com/zapta/simple_stepper_motor_analyzer . The enclosure was designed on Onshape and it makes it very easy to share an interactive 3D model with export capabilities. https://cad.onshape.com/documents/58d3fc7e6c256c4f6a684caf/v/194a8feb7fe55d4b68b92318/e/96371cb25b019416be0a198b
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@zapta could it be used to tune spreadcycle parameters?
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@zapta I would like one too
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@zapta I would like one too when you next do a run of them.
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Good news, 20 PCBs arrived from JLPCB with some preassembled components. I built one using a screen I had and it seems to work. Now I am waiting for the screen and other components for the first batch of 10 to arrive, should be here within 2-3 weeks. Once this batch is shipped and has no problems, I will work on the next batch.
As arrived from JLCPCB:
Fully assembled:
Enclosed:
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@zapta is it too late to jump in on this??
Super interested!
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@zapta looks beautiful
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+1 (please) with shipping to germany
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A quick update: Still waiting for some components to arrive from china (current sensors, connectors, and Picos). I ordered sensors and connectors with aliexpress-standard-shipping but it's still on the way, same for the Picos from Seeed. Meanwhile I decided to use the waiting time and printed enclosures
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@zapta I was too impatient to wait for the next run. LOL. I ordered a run of 30 PCB's from JLCPCB, they should leave China tomorrow. I'm having a slightly difficult time finding the ACS70331EOLCTR-2P5B3 current sensors here in the US. I have some coming from China, but, again, impatient. What were the 5A optional ones you had in mind? Maybe those will be easier to source?
Your work is amazing. Thank you so much for sharing this!!!
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Hi @pastthepoint, I am glad that other people building these boards. Do you remember when you downloaded the gerber files from github and what version number is printed on them? The reason is that at one point I changed the design to allow a usage of the Pico's Programmable IO so I wonder what version you have.
I believe that this is the CL that introduced the new version (MK3)
https://github.com/zapta/simple_stepper_motor_analyzer/commit/bc6e5b5a2bedd1de99014e725a0701d6f68a7b74#diff-ca5a89d660952f0b6ae9894238e524ca0ef82bbc301a53af0931c1be35b1f6ebACS70331EOLCTR-2P5B3 was always difficult to find in the US unless if you buy hundreds, or willing to use a smaller QFN package/footprint which is more difficult to solder manually. I order them from Aliexpress.
For the 5A ACS70331EOLCTR-005B3 should fit but never tried it. It will also require a change in the firmware for the new scale (otherwise everything will work but current readings will be 50% of actual).
Let me know if you encounter any issue.
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@zapta : Kindly put me down for 1 on your next run to, please Mate.
Cheers,
Beano+