Anybody wants a stepper motor analyzer?

PastThePoint

@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!!!

zapta

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-ca5a89d660952f0b6ae9894238e524ca0ef82bbc301a53af0931c1be35b1f6eb

ACS70331EOLCTR-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.

0

zapta committed to zapta/simple_stepper_motor_analyzer

Updated kicad files for MK3

beano

@zapta : Kindly put me down for 1 on your next run to, please Mate.

Cheers,
Beano+

bot

I would very much like to have one of these when you next make them, and I am happy to donate an additional amount of money to help support you. Please put me on any list for the next run!

zapta

Hi everybody,

TL;DR, If your name is in the list below, please send me your shipping info so I can send you an analyzer. Please be prepared to pay via amazon gift card (requires an amazon account) upon shipping.

I have the first batch almost ready for shipping (electronics is done, just waiting for the threaded inserts for the enclosures) so it's time to get read. First batch will go to the first 10 people + dc42 (see list below, I happened to have parts for one more unit).

If you are still interested, please send me an direct message with your shipping address (see below a snapshot of the Post Office form with the details you need to provide). I will ship via the least expensive method the Post Office here in the US will offer so don't expect a useful tracking number.

Once I will ship I will ask you to pay the expenses ($30 USD + whatever the Post Office will charge) via Amazon gift card (you need to have an Amazon account, purchases a gift card for the exact amount and send me via chat the gift card number amazon will give you).

Also, please remember that I don't do it for any profit so this is provided 'as is' with no warranty of any time. Of course I will be able to answer questions and advise as possible.

BTW, if you are not on the first batch list, don't worry, I plan to make more and already have 20 extra PCBs. I want to see first how the first batch does go and if there are any design or other problems.

First batch recipients:
@Tinken
@jay_s_uk
@martin7404
@bricor
@fcwilt
@alankilian
@Nuramori
@paralepsis
@3DPMicro
@Luke-sLaboratory
@dc42

martin7404

@zapta pm sent

fcwilt

@zapta

chat message sent

Nuramori

@zapta PM sent. Thanks for your gratious contribution to the community!

alankilian

@zapta Chat message sent.

3DPMicro

Me too. Via chat, that is

Luke'sLaboratory

same. PM sent with address, VERY excited!!!!!

skrotz

I'm interested in getting one, thanks!

PastThePoint

@zapta said in Anybody wants a stepper motor analyzer?:

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-ca5a89d660952f0b6ae9894238e524ca0ef82bbc301a53af0931c1be35b1f6eb

ACS70331EOLCTR-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.

I have some coming from Aliexpress too. I should've ordered more. I also have some screens coming. I have the v1.0's. I'm assuming those are still the current ones?

Thanks Zapta. Your work is awesome!

Michael Hathaway

@zapta pm sent

zapta

Hi everybody, 11 units went out today for the people listed below (one each). If you are in the US an dong' get it within 2 weeks or in Europe and don't get it within 3 weeks, please ping me.

You can reimburse me for the out of pocket expenses by sending me an amazon gift card for $39 (US) or $46 (Europe). To do that, log in to your amazon account, navigate to the gift cards section, purchase a gift cart for the applicable amount and send me the gift card # via IM here. If your give card will have a different amount due to exchange rate, should be also OK.

If you have any question, please let me know. If this batch will go well I will make more units. If you want to make unit yourself (even commercially and for profit), I will give you all the help I can for no free.

Edit: here is the list

@Tinken
@jay_s_uk
@martin7404
@bricor
@fcwilt
@alankilian
@Nuramori
@paralepsis
@3DPMicro
@Luke-sLaboratory
@dc42

fcwilt

@zapta

Listed below? Where???

Frederick

Nuramori

@zapta said in Anybody wants a stepper motor analyzer?:

Hi everybody, 11 units went out today for the people listed below (one each). If you are in the US an dong' get it within 2 weeks or in Europe and don't get it within 3 weeks, please ping me.

You can reimburse me for the out of pocket expenses by sending me an amazon gift card for $39 (US) or $46 (Europe). To do that, log in to your amazon account, navigate to the gift cards section, purchase a gift cart for the applicable amount and send me the gift card # via IM here. If your give card will have a different amount due to exchange rate, should be also OK.

If you have any question, please let me know. If this batch will go well I will make more units. If you want to make unit yourself (even commercially and for profit), I will give you all the help I can for no free.

PM sent with claim code. Thanks!

zapta

@fcwilt said in Anybody wants a stepper motor analyzer?:

Listed below? Where???

Oops, I just added the list to that post.

fcwilt

@zapta said in Anybody wants a stepper motor analyzer?:

You can reimburse me for the out of pocket expenses by sending me an amazon gift card for $39 (US) or $46 (Europe). To do that, log in to your amazon account, navigate to the gift cards section, purchase a gift cart for the applicable amount and send me the gift card # via IM here. If your give card will have a different amount due to exchange rate, should be also OK.

I went to Amazon and checked about gift cards.

They want an email address to deliver it or a phone number to text it.

How does that work?

They didn't mention anything about a gift card number that I could provide to you.

Thanks.

Frederick

paralepsis

@zapta Sent in chat! Thanks!