Tinkernut Labs

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In case you want a nerdier way to make a cheap motion detecting squirt gun, Here’s how you can build your own with an Arduino and a PIR sensor!

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Acquiring the PartsHere’s what you will need:

1. Raid Auto Trigger
2. Arduino
3. PIR Motion Sensor
4. Diode
5. NPN Transistor
6. Wire cutters and wire

TOTAL COST: ~$45.00

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Disassemble the Automatic SprayerWire Up The ArduinoHere is a schematic of the Arduino. You can download the Fritzing files by clicking on this link. [tabby title=”Step 3″]

Add The CodeHere is a copy of the Arduino code to upload to your arduino. You can also download it by clicking on this link. const int pirPower = 13; const int pirIn = 12; int motorPin1 = 3; void setup(){ pinMode(pirPower, OUTPUT); pinMode(pirIn, INPUT); pinMode(motorPin1, OUTPUT); digitalWrite(motorPin1, LOW); digitalWrite(pirPower, HIGH); } void loop(){ int value= digitalRead(pirIn); if (value == HIGH){ digitalWrite(motorPin1, HIGH); delay(500); digitalWrite(motorPin1, LOW); } }

[/vc_column_text][/vc_tab][vc_tab title=”Important Links” tab_id=”1402753981900-3-1046d9-0fc4″][vc_column_text] Help support my channel: http://www.patreon.com/tinkernut Follow Tinkernut! Google + Facebook Twitter [/vc_column_text][/vc_tab][/vc_tabs][/vc_column][vc_column width=”1/3″][/vc_column][/vc_row]