upd

GyverGun/README.md

@@ -0,0 +1,20 @@
+# DIY full auto pneumatic rifle with Arduino
+[![MadGyver YouTube](http://alexgyver.ru/git_banner2.jpg)](https://www.youtube.com/channel/UCNEOyqhGzutj-YS-d5ckYdg?sub_confirmation=1)
+
+## Project description
+Full-auto BB pneumatic rifle on Arduino
+- 2 shots per second
+- Servo powered reload
+- Shoots BB 4.5mm airsoft balls
+- About 70 balls in magazine
+- Muzzle energy 3 Joules
+- [Quick start with Arduino](https://learn.sparkfun.com/tutorials/installing-arduino-ide)
+
+## Download last release
+[**Click me**](https://github.com/AlexGyver/EnglishProjects/releases/download/GyverGun/GyverGun.rar)
+
+## Schemes
+![GyverGun](https://github.com/AlexGyver/EnglishProjects/blob/master/GyverGun/drawings/GyverGun_bb.jpg)
+
+##  Components
+* Arduino NANO http://ali.pub/2sq5d4

GyverGun/firmware/valve_servo_automatic/valve_servo_automatic.ino

@@ -0,0 +1,62 @@
+/*
+  Created 2016
+  by AlexGyver
+  AlexGyver Technologies
+  for MadGyver YouTube channel
+*/
+
+#define MODE 5
+#define TRIGGER 3
+#define VALVE 2
+#define SERVO 4
+
+#define STARTPOS 145  	// bolt is open
+#define STOPPOS 51    	// bolt is closed
+#define VALVE_DELAY 20	// valve open delay in ms
+
+#include <Servo.h>
+Servo servo;
+
+byte flag = 0;
+byte trigger = 0;
+byte set = 0;
+
+void setup()
+{
+  pinMode(VALVE, OUTPUT);
+  pinMode(TRIGGER, INPUT_PULLUP);
+  pinMode(MODE, INPUT_PULLUP);
+
+  servo.attach(SERVO);
+  servo.write(STOPPOS);
+}
+
+void shot() {
+  digitalWrite(VALVE, HIGH);  // open valve
+  delay(VALVE_DELAY);         // wait
+  digitalWrite(VALVE, LOW);   // close valve
+  delay(20);                  // wait for ball to go away
+  servo.write(STOPPOS);       // open bolt
+  delay(272);                 // wait for new ball
+  servo.write(STOPPOS);       // close bolt
+  delay(272);                 // wait ball to settle
+}
+
+void loop() {
+  set = !digitalRead(MODE);
+  trigger = !digitalRead(TRIGGER);
+
+  if (trigger && !set && !flag) {
+    shot();
+    flag = 1;
+  }
+
+  if (!trigger && !set && flag) {
+    flag = 0;
+  }
+
+  if (trigger && set && !flag) {
+    shot();
+  }
+  delay(5);
+}