“My hobby and passion is to realize physics projects. One of my last work is about ultrasonic sonography. As always I tried to make it as simple as possible with parts you can get on ebay or aliexpress. So let’s take a look how far I can go with my simple items…
I was inspired by this a bit more complicated and more expensive project:
https://hackaday.io/project/9281-murgen-open-sourc…
Here are the parts you’ll need for my project:
the main parts:
a gauge to measure the thickness of paint for 40 USD: ebay paint thickness gauge GM100
an arduino Due for 12 USD: ebay arduino due
a 320x480 pixel display for 11 USD: 320x480 arduino display
two 9V/1A power supplies for the symmetric +9/GND/-9V supply
ultrasound-gel for sonography: 10 USD ultrasound gel
for the transmitter:
a step-up-converter for the needed 100V for 5 USD: 100V boost converter
a common step-up-converter supplying 12-15V for the 100V-boost-converter for 2 USD: XL6009 boost-converter
a LM7805 voltage regulator
monoflop-IC 74121
mosfet-driver ICL7667
IRL620 mosfet: IRL620
capacitors with 1nF (1x), 50pF (1x), 0.1µF (1x electrolytic), 47µF (1x electrolytic), 20 µF (1 x electrolytic for 200V), 100 nF (2x MKP for 200V: 100nF20µF
resistors with 3kOhm (0.25W), 10kOhm (0.25W) and 50Ohm (1W)
10 kOhm potentiometer
2 pcs. C5-sockets: 7 USD C5 socket
for the receiver:
3 pcs. AD811 operational amplifie: ebay AD811
1 pcs. LM7171 operational amplifie: ebay LM7171
5 x 1 nF capacitor, 8 x 100nF capacitor
4 x 10 kOhm potentiometer
1 x 100 kOhm potentiometer
0.25W resistors with 68 Ohm, 330 Ohm (2 pcs.), 820 Ohm, 470 Ohm, 1.5 kOhm, 1 kOhm, 100 Ohm
1N4148 diodes (2 pcs.)
3.3V zener diode (1 pcs.)”