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Homemade sensor


Homemade ultrasonic distance sensor - part list
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1 x Arduino NANO LINK eBay
2 x 40KHz speakers: LINK eBay
1 x MAX232: LINK eBay
1 x LM324: LINK eBay
3 x 5k potentiometer: LINK eBay
3 x 100k resistor: LINK eBay
3 x 10k resistor: LINK eBay
1 x 100R resistor: LINK eBay
5 x 100nF capacitor: LINK eBay
5 x 10nF capacitor: LINK eBay
1 x BC557 PNP: LINK eBay
1 x drilled PCB: LINK eBay
PCB pins: LINK eBay
Wires LINK eBay

Wire, soldering iron, solder, etc...





circuit sr04 ultrasonic













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