Hello all, i try to make a ignition for mu two stroke engine. Here is my code below, i wonder is it wrong or... Pin 9 doesnt come high or low. If i put a 5 volt on it the coil sparks. Do i miss something? regards` `const int hallPin = 2; // Pin voor Hall-sensor const int coilPin = 9; // Pin voor bobine void setup() { pinMode(hallPin, INPUT_PULLUP); // Hall-sensor met interne pull-up pinMode(coilPin, OUTPUT); // Bobine-uitgang Serial.begin(9600); // Debugging Serial.println("Testprogramma gestart"); } void loop() { // Wacht op een Hall-sensorpuls if (digitalRead(hallPin) == LOW) { Serial.println("Hall-sensor actief!"); // Debugging digitalWrite(coilPin, HIGH); // Zet bobine aan delayMicroseconds(100); // Houd 100 microseconden hoog digitalWrite(coilPin, LOW); // Zet bobine uit delay(200); // Wacht om overtriggeren te voorkomen } } ``

Welcome to the forum You started a topic in the Uncategorised category of the forum when its description explicitly tells you not to Your topic has been moved to a relevant category. Please be careful in future when deciding where to start new topics Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems' Use code tags (the icon above the compose window) to make it easier to read and copy for examination https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum Please post your sketch, using code tags when you do Posting your code using code tags prevents parts of it being interpreted as HTML coding and makes it easier to copy for examination In my experience the easiest way to tidy up the code and add the code tags is as follows Start by tidying up your code by using Tools/Auto Format in the IDE to make it easier to read. Then use Edit/Copy for Forum and paste what was copied in a new reply. Code tags will have been added to the code to make it easy to read in the forum thus making it easier to provide help.

[image] Preimert: Pin 9 doesnt come high or low. If i put a 5 volt on it the coil sparks. But does the message get printed? If it does, how do you know the pin does not go high?

When you re-post your code include an annotated schematic showing your circuit.

[image] Preimert: If i put a 5 volt on it the coil sparks. Do you understand that the spark is caused by the current, Amperes, flowing from the 5 volts? The 5 volts on your Arduino is for signalling, not supplying more that a tiny current. You can certainly add a transistor that will handle the current and the Arduino pin can control that transistor.

[image] Preimert: i try to make a ignition for mu two stroke engine. [image] Preimert: Do i miss something? yes - we need to see a schematic. [image] How to make a schematic you can post. Introductory Tutorials When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

Hi ,thanks for your reply. I measured pin 9 with a multimeter. regards.

[image] Paul_KD7HB: add a transistor that will handle the current and the Arduino pin can control that transistor. add a transistor that will handle the current and the Arduino pin can control that transistor, which i did. i use a tip 120 for testing.

My igniter is same as the picture

Ignition problem

Projects Programming

johnerrington December 22, 2024, 7:35am 6

yes - we need to see a schematic.

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Ignition problem

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