Hi Leo, What I get at the output (piezo attached and multi-meter reading across OUT+ to OUT-) is a short pulse in the mV. The meter registers a ~150mV pulse once I clear the standby bit for the 2nd time in the sequence I posted above. Analog inputs are being held constant. What I will probably do is order a few of the following boards that include the DRV2667 chips - I assume these should get me up and running quickly while you are looking into the problem on your end. www.tindie.com/.../ . One item I am not clear on is if I use these chips in analog mode and apply the following DC inputs, will I get the constant outputs I've listed? IN+ = 3.3VDC IN- = Gnd OUT+ = 25V OUT- = 0V IN+ = Gnd IN- = 3.3VDC OUT+ = 0V OUT- = 25V
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