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by jsjohnst 2002 days ago
Did you consider using servos vs electromagnets? Curious if small servos couldn’t accomplish the same goal.
2 comments
daniellarusso 2002 days ago
That is a good idea. Those 9g mini servos are only $2 each, so that is much more affordable than the ‘retail’ solenoids.
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jsjohnst 2001 days ago
If you are willing to wait on them, you can get 5 packs of 9g servos for $2 including shipping from China.
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daniellarusso 2000 days ago
I am interested in that url, please.
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jsjohnst 1999 days ago
I’m not seeing them in stock with the sellers I usually buy from, but here is a 4 pack for $4.39 including shipping from China ($2.09 from US, but not free shipping):

https://m.aliexpress.com/item/4000066002225.html

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keredson 2002 days ago
I hadn't even thought of using small servos. Possibly that would have been a lot simpler! I went though a bunch of prototype EMs testing to get a working combo of voltage, windings, core size, etc. (Blew more than a few driver circuits too...)
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