Anshu AR

Usually, it's because the baud rate on the Serial monitor differs from the baud rate of your uploaded sketch.In this case, the baud rate is 19200As the code says:Serial.begin(19200);So make sure you change 9600(default) to 19200 in your serial monitor

//Here try this code:void setup(){pinMode(13, OUTPUT);Serial.begin(9600);while (!Serial);Serial.println("Input A to Turn LED on and B to off");}void loop() { if (Serial.available()){ char state = (char) Serial.read(); if (state == 'A'){ digitalWrite(13, HIGH); Serial.println("Command completed LED turned ON"); } if (state == 'B'){ digitalWrite(13, LOW); Serial.println("Command completed LED turned OFF"); } } delay(100);}

LOL!

Hi usamaabro,That's quite unlikely to happen.Anyways you can always copy and paste the sketch that's included in step 3.Or, you can post a screenshot of the error that's being displayed on your Arduino IDE.

Awesome loved it!

Bigger DC motors?In order to run bigger DC motors, find out how much current your motors are consuming at full speed with load(if any).Finally, lookup transistors (or even better MOSFETs) that can withstand current higher than what your motors require.same bridge for two motors?If you want to control their individual speed at the same time then NO.However, you can run two motors(As long as they are consuming current under the limit). But they will run with the same speed(If both connected in parrel) in the same direction.

Go with the fritzing schematics in step 2.Anyways diodes should be pointing from the emitter towards the collector of the transistor.Hope this helps. :)

Loved it!

Nice! Loved it. Can't wait to try it!!!!

Nice.

Very well explained!You have my vote. Good luck with the contest :)

Awesome man!Totally loved it!

Nice work!

Pretty! :)

Cool!! Loved it.

Thanks! Sure I will give that a try :)

Nice!Now, you can improve the schematics in Step 8 by using Fritzing or Autodesk Circuits. Just to make it even more conveying and clear.:)

Nice!I've been using the exact same batteries from eBay India. Nice to see you, buddy!

Nice mod!

This is coool!I've tried these many times during my 10th grade.

Very helpful. Daily yoga or meditation helps a lot. :)

Nice! I've been playing around with transistors for a while. This one is fun!

Nice!

Nice!!

Awesome!:)

Nice!!!

Nice instructable!Just a small question off the topic, Whats that multimeter you are using?I mean I have to buy one. So is that a reliable one?

Nice!What's that opaque project enclosure you're using?

Nice! Add a video that would be great.

Awesome!!

Nice!But the display uses lots of Arduino pins. Give OLED display a try. The project will look even more compact.Also, OLED displays are cheaper than the one that you are using.

Nice!But the display uses lots of Arduino pins. Give OLED display a try. The project will look even more compact.Also OLED displays are cheaper that the one you are using.

Hey Tranie,It's you again! Trust me your name has been appearing a lot. Since your instructable "DIY gyroscope":) :)

Alright I wish for........... wait a minute, I ain't gonna say that out loud. Anyways, nice first instructable!

Nice!!Good luck for the contest :)

Awesome!!

Hello (Namaste),Nice instructable :)

Nice work!