All this talk about digital grinders (M4D etc) got me thinking - it cant be that hard to come up with a circuit to switch on and switch off a grinder for a certain amount of time. Found a few circuits on the net that might do - a 555 clock timer, 4020 ripple counter and a relay adjustable within certain parameters, made from cheap bits available from Jaycar etc.
Anyway, I bread-boarded the components, and so far the so good, a variable on/off timer switching the AC power supply to the grinder (testing was done on a light bulb), all powered by a 9 volt battery. I am hoping this will add a consistency to dosing. Yet to do the actual tests and weigh the results but. See how we go
Cheers
Anyway, I bread-boarded the components, and so far the so good, a variable on/off timer switching the AC power supply to the grinder (testing was done on a light bulb), all powered by a 9 volt battery. I am hoping this will add a consistency to dosing. Yet to do the actual tests and weigh the results but. See how we go
Cheers






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