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Fusion 360Autodesk
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TinkerCad |
Mini drill PCB_2026-08-28 FINAL
It's an electric screwdriver. I made it because I unscrew things a lot and it makes my hands hurt. It uses a DRV module to spin the geared motor both directions to screw and unscrew. It requires a set of screw heads that have a hex bottom so that it fits. If it doesn't, you can 3d print your own.
void setup() {
///////PINS///////
pinMode(2, OUTPUT); //AIN1
pinMode(3, OUTPUT); //AIN2
pinMode(4, INPUT_PULLUP); //DPDT1
pinMode(5, INPUT_PULLUP); //DPDT2
pinMode(6, INPUT_PULLUP); //PUSHBUTTON
pinMode(7, OUTPUT); //RED LED
pinMode(8, OUTPUT); //GREEN LED
pinMode(LED_BUILTIN, OUTPUT); //Built-in LED for debugging. Turn off while in product
///////INITALIZE///////
//Write every output to LOW
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
}
void loop() { //Switch LEFT and RIGHT if wrong
if (digitalRead(4) == LOW && digitalRead(5) == HIGH) { //LEFT
if (digitalRead(6) == LOW) {
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
while (digitalRead(6) == LOW) {
if (digitalRead(6) == LOW) {
digitalWrite(8, LOW);
}
for (int i = 0; i < 10; i++) {
if (digitalRead(6) == LOW) {
delay(25);
}
}
if (digitalRead(6) == LOW) {
digitalWrite(8, HIGH);
}
for (int i = 0; i < 10; i++) {
if (digitalRead(6) == LOW) {
delay(25);
}
}
}
} else if (digitalRead(6) == HIGH) {
digitalWrite(8, HIGH);
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(7, LOW);
}
} else if (digitalRead(4) == HIGH && digitalRead(5) == LOW) { //RIGHT
if (digitalRead(6) == LOW) {
digitalWrite(3, HIGH);
digitalWrite(2, LOW);
while (digitalRead(6) == LOW) {
if (digitalRead(6) == LOW) {
digitalWrite(7, LOW);
}
for (int i = 0; i < 10; i++) {
if (digitalRead(6) == LOW) {
delay(25);
}
}
if (digitalRead(6) == LOW) {
digitalWrite(7, HIGH);
}
for (int i = 0; i < 10; i++) {
if (digitalRead(6) == LOW) {
delay(25);
}
}
}
} else if (digitalRead(6) == HIGH) {
digitalWrite(7, HIGH);
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(8, LOW);
}
}
}
Mini drill PCB_2026-08-28 FINAL
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
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