HI all,
My ancient Acu-rite III DRO has gone flaky. I ordered one off the
following link.
https://www.ebay.com/itm/2-3-Axis-Digital-Readout-DRO-TTL-Linear-Glass-Scale-Encoder-for-Milling-Lathe-US/383318755364?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D226424%26meid%3Dcfa3ce45df724f6caf6f3f9e3f504aca%26pid%3D100005%26rk%3D2%26rkt%3D12%26mehot%3Dpf%26sd%3D143473346840%26itm%3D383318755364%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bDemotion%26brand%3DUnbranded&_trksid=p2047675.c100005.m1851
The instructions give two possible connection patterns: both for A+, B+,
gnd and +5v. No instructions for A+, A-, B+, B-, gnd and +5v.
No joy. An internal autoresetable fuse saves idiots from themselves. I
emailed the vendor and got back a 'yes we have no bananas' type answer.
"Hi David, thanks for your shopping in our store.
So pleased to serve for you.
Yes, it's no need to do that without having to use opto-couplers to
isolate the connection.
Best regards,
Ebay seller-tradeparts-shop"
I'm still convinced that I need the opto's but thought I'd bounce this
off the list.
BTW - it works fine with one of their scales.
Once I get both types of scales going I will do a comparison against
each other and against Jo blocks and boring machine standards.
Has anyone else tried these and how did you make it work? As always
thanks in advance.
Dave
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