Yep, they do work. Altronics and Jaycar are good for mid-range priced units.
At the moment, I'm just using a $30 Aldi unit which is OK for small stuff, but I've also used lab grade units in the past.
Cheers,
Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."
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