After construction, gently hit or knock the piezo sensor with your fingertipor a small hammer to test the circuit. Now you can finish the construction by soldering remaining components as indicated in the circuit diagram. It will be harder to move the wires thereafter. Decide how you would like to route your wires before you complete this step. Next, apply little glue on the top of the washer,place the piezo (with presoldered wires) and solder the wires to the circuit board. First of all apply a thin amount of glue to the marked area on the PCB and press a plastic washer (of suitable diameter) into the glue, put aside until the glue is hard. Proposed circuit board wiring layout is shown here. Related Products: Electromechanical Switches | Switch Other | Switch Piezo Schematic of the Shock/Impact Sensor Switch Circuit Discotheque lights, winkling in tune with the bass drum bang is another application example! Imagine the fun you could have building a drum kit and then rocking the house.This circuit lets you turn your Arduino into a drum kit. One 5mm LED (LED1) is added for effective visual indication of the output status. However you can change this by modifying the value of the RC time constant components in the CMOS monostable circuit built around M7555CN (U1). By default, this high signal is available for a period of near 1 second. The module gives a “Logic-High” (H) output when the sensor (PZ1) detects a valid shock/impact. The piezo-ceramic element (PZ1) can also be mounted on the PCB without any difficulty. The whole circuit can be assembled on a 5×7 cm common circuit board. Don't pull a harbor freight and sell a ultra sonic cleaner which has the horn fall off and melt the chassis and try to light tables on fire.Piezo Trigger Switch circuit described here is a microcontroller-compatible shock/impact sensor switch module works on 5VDC supply. I assume you will have to test a glue bond to the device being stimulated anyway. You need to test products before sale typically, especially if they do a process (you can't just plug it into a card, you need to make sure the transducer works and is in spec), so having the test technician trim something is not outlandish. Plenty of good profitable things get adjusted. Not sure if you want to say tuning/adjustment is bad for production, its best avoided. I only worked with one piezo device and I never finished the project. You should be able to produce a graph of output power vs tuning some how I do see values of nF for capacitor, but I don't know about series L. parallel/series components) How are you measuring performance of the device during match tuning? I suspect your IA will have a difficult time (not sure how well it can mimic a real Keysight IA). Well you use the variable parts to see what matching actually does, then if you like it you figure out how to match it cheaply (i.e. How are you measuring the piezo device, experimentally or via the data sheet ( assuming it exists) Also, do you have a VNA or impedance analyzer that could help measure and characterize the device? And could you explain how you drive the device now and the issues you expect to have without a proper or optimized match Bob Perhaps the best way to match is by selecting the frequecies of interest and do your best with L’s an C’s to get the most stable operating point and match to that. Understandably, in your case, matching is a lot more difficult. In both cases the impedance match was really poor since The manufacturer of these devices had such poor control of the impedance over frequency, they often didn’t spec it or provided a typical, non-guaranteed performance number just for reference. I have somewhat similar experiece driving electro acoustic modulators and piezo fiber stretchers (fiber optic device used in interferometors) in those cases I was driving them with a fast sub nano-second pulse or slewing a very high voltage into a very capacitive load.
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