Automatic Key Stroker

prusaprinters

<p>Just a simple key stroker. You dont know you need one until you do... :D</p> <p>It uses a mini servo, a small potentiometer (optional), and any arduino compatible board that can fit inside the box and can handle the servo. I used a cheap Wemos D1 Mini clone. You need 6x3mm bolts (same size as the bolts used in Prusa printers).</p> <p>Arduino code is included in the print instructions since this website does not allow me to upload the .ino file...</p> <h3>Print instructions</h3><p>Just use your normal settings. I included a 3mf file for reference.</p> <p>Arduino code:</p> <h3>include &lt;Servo.h&gt;</h3> <h3>include &lt;SimpleTimer.h&gt;</h3> <p>Servo myservo;<br/> int pos = 0;<br/> int lowpos = 0;<br/> int highpos = 90;<br/> int servopin = 2;<br/> int potpin = A0;<br/> int ledpin = D7;<br/> int val = 0;<br/> int oval = 0;<br/> int pot = 0;<br/> int servoSpeed = 4;</p> <p>SimpleTimer timer;</p> <p>void setup() {<br/> myservo.attach(servopin);<br/> myservo.write(lowpos);<br/> Serial.begin(9600);<br/> timer.setInterval(val);<br/> }</p> <p>void loop() {<br/> pot = analogRead(potpin);<br/> //Serial.println(pot);<br/> val = map(pot,1,1024,15000,0);<br/> val = val * 1000 / 1000;<br/> if (abs(oval-val) &gt; 1000) {<br/> Serial.println(val);<br/> oval=val;<br/> timer.setInterval(val);<br/> timer.reset();<br/> }</p> <p>if (timer.isReady()) {<br/> moveServo();<br/> }<br/> }</p> <p>void moveServo() {<br/> for (pos = highpos; pos &gt;= lowpos; pos -= servoSpeed) {<br/> myservo.write(pos);<br/> delay(15);<br/> Serial.println(pos);<br/> }<br/> for (pos = lowpos; pos &lt;= highpos; pos += servoSpeed) {<br/> myservo.write(pos);<br/> delay(15);<br/> Serial.println(pos);<br/> }</p> <p>timer.reset();<br/> }</p>