Full-Auto 3D-Printed Brushless Nerf Blaster Arduino Control

This project is an Arduino-controlled, 3D-printed functional Nerf replica of the Kang Tao Gun from the upcoming video game Cyberpunk 2077.

Oct 14, 2019

•

30406 views

•

35 respects

Components and supplies

Brushless DC Motor

Resistor 220 ohm

Arduino Nano Every

Lipo Battery 3S 11.1-12.6V 1300mAh 25C

1N4007 – High Voltage, High Current Rated Diode

Through Hole Resistor, 150 ohm

Microswitch, Miniature

Through Hole Resistor, 4.7 kohm

Brushless ESC

Capacitor 100 µF

Linear Solenoid, 12 VDC

Resistor 10k ohm

Capacitor 100 nF

Power MOSFET N-Channel

Tools and machines

3D Printer (generic)

Project description

Code

Nerf Blaster Brushless Motor & Solenoid Arduino Code - Clark3DPR

arduino

1. When Arduino is powered on via the safety switch, it runs the arming sequence for the brushless ESC's. My ESC's take 3.7secs (3700 in the code). You may have to increase this value up to 10000 (10secs) depending on your own ESC to get it to exit safe mode. 2. Hold secondary microswitch to rev flywheels, then press or hold primary microswitch to fire. 2. Change throttle.write(92) to increase/decrease motor idling speed or turn them off. By default motors will spin at low speed to decrease spin up time. (Value depends on your motor / ESC) Change throttle.write(97) to change motor top speed and dart velocity. (Value depends on your motor / ESC) Change delay(90) and delay(100) to increase/decrease fire rate of solenoid. 4. When Microswitch is released, ESC PWM signal for flywheels & signal to MOSET gate for solenoid stops spinning/activating. 5. When ESC's lose signal from Arduino (when safety switch is on and Arduino powered off), the ESC's revert to safe mode and turn off motors.

1const int buttonPinF = 2;      // Flywheel Rev microswitch pin number
2const  int buttonPinS = 5;      // Solenoid microswitch pin number
3int buttonStateF  = 0;             // Variable for reading the Flywheel Rev microswitch status
4int  buttonStateS = 0;             // Variable for reading the Solenoid microswitch status
5int  solenoidPin = 4;              // Solenoid MOSFET Gate pin number
6
7#include  <Servo.h>
8
9Servo throttle;
10
11int pos = 0;
12int pin = 3;                            //  ESC signal pin
13
14void setup() {
15  
16   pinMode(buttonPinF, INPUT); 	       // Initialize the Flywheel microswitch pin as an input
17   pinMode(buttonPinS,  INPUT); 	       // Initialize the Solenoid microswitch pin as an input
18   throttle.attach(pin);
19   pinMode(solenoidPin, OUTPUT);         // Sets Solenoid MOSFET Gate pin as an  output
20    
21 // ESC Arming Sequence
22   for (pos = 90; pos <= 91; pos +=  1) { 
23      throttle.write(pos);             
24      delay(3700);                                         //  Wait for ESC to arm / Exit safety mode
25
26// Increase this 3700 value depending  on how long it takes for your ESC to arm
27
28   }
29}
30
31void loop() {
32  
33    buttonStateF = digitalRead(buttonPinF);  // Read state of Flywheel microswitch  value
34 
35    if (buttonStateF == HIGH) {  // Check microswitch pressed, if  so Flywheel buttonState is HIGH
36    throttle.write(92);                 // <(92)  = Motor off / (92) = Idle speed
37  } else {
38    throttle.write(97);                //  Motor on (92) = Idle speed / ~(115) = Max speed
39  }
40
41buttonStateS = digitalRead(buttonPinS);    // Read state of Solenoid microswitch value
42
43  if (buttonStateF == LOW  && buttonStateS == LOW) {
44  digitalWrite(solenoidPin, HIGH);           // Switch  Solenoid ON
45  delay(90);                                                // ON  duration
46  digitalWrite(solenoidPin, LOW);           // Switch Solenoid OFF
47  delay(100);                                             // OFF duration
48   }  else {
49      digitalWrite(solenoidPin, LOW);      // Switch Solenoid OFF
50  }
51}
52

const int buttonPinF = 2;      // Flywheel Rev microswitch pin number
const  int buttonPinS = 5;      // Solenoid microswitch pin number
int buttonStateF  = 0;             // Variable for reading the Flywheel Rev microswitch status
int  buttonStateS = 0;             // Variable for reading the Solenoid microswitch status
int  solenoidPin = 4;              // Solenoid MOSFET Gate pin number

#include  <Servo.h>

Servo throttle;

int pos = 0;
int pin = 3;                            //  ESC signal pin

void setup() {
  
   pinMode(buttonPinF, INPUT); 	       // Initialize the Flywheel microswitch pin as an input
   pinMode(buttonPinS,  INPUT); 	       // Initialize the Solenoid microswitch pin as an input
   throttle.attach(pin);
   pinMode(solenoidPin, OUTPUT);         // Sets Solenoid MOSFET Gate pin as an  output
    
 // ESC Arming Sequence
   for (pos = 90; pos <= 91; pos +=  1) { 
      throttle.write(pos);             
      delay(3700);                                         //  Wait for ESC to arm / Exit safety mode

// Increase this 3700 value depending  on how long it takes for your ESC to arm

   }
}

void loop() {
  
    buttonStateF = digitalRead(buttonPinF);  // Read state of Flywheel microswitch  value
 
    if (buttonStateF == HIGH) {  // Check microswitch pressed, if  so Flywheel buttonState is HIGH
    throttle.write(92);                 // <(92)  = Motor off / (92) = Idle speed
  } else {
    throttle.write(97);                //  Motor on (92) = Idle speed / ~(115) = Max speed
  }

buttonStateS = digitalRead(buttonPinS);    // Read state of Solenoid microswitch value

  if (buttonStateF == LOW  && buttonStateS == LOW) {
  digitalWrite(solenoidPin, HIGH);           // Switch  Solenoid ON
  delay(90);                                                // ON  duration
  digitalWrite(solenoidPin, LOW);           // Switch Solenoid OFF
  delay(100);                                             // OFF duration
   }  else {
      digitalWrite(solenoidPin, LOW);      // Switch Solenoid OFF
  }
}

Downloadable files

System Schematic - Clark3DPR

This is how it is all wired up. Pay close attention to diode and capacitor polarities. Drawn with AutoCAD.

System Schematic - Clark3DPR

This is how it is all wired up. Pay close attention to diode and capacitor polarities. Drawn with AutoCAD.

System Schematic - Clark3DPR

Comments

Only logged in users can leave comments

Clark3DPR

0 Followers

•

0 Projects

Intro