Anshu AR

Probably not useful for UNO.But for some devices like Leonardo, the sketch waits at "while(!Serial);" unless Serial communication has established.

You'll need a H-Bridge of transistors to be able to change direction of motor.Refer to this: https://www.instructables.com/H-Bridge-Motor-Driver-for-Arduino-Using-Transistor/

You'll need an H-Bridge of transistors to be able to change the direction of the motor.Refer here: https://www.instructables.com/H-Bridge-Motor-Driver-for-Arduino-Using-Transistor/

Can you be more specific?Does the serial prints "0"?Can you include a screenshot?I am assuming you need to set the baud rate on the serial monitor to 9600 as the sketch defines Serial communication at 9600 bauds.(You can adjust the baud rate at the bottom right corner.)

Hi, you'll probably need to use a MOSFET like an IRF640. With a different circuit.I would recommend using Digikey part search to find the MOSFET as per your requirements.

I used Fritzing get it here:http://fritzing.org/

Yes,As per the datasheet of the L293D motor driver, it says that it can operate from 4.5V to 36V.But, it can provide a maximum of 600mA output current. (per channel). So, check how much current will the motor draw. The motor should not draw current more than 600mA at any instance.

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!

I hate to admit this but, that's all I know about changing BIOS splash screen.

Ummm.....Yeah, why not?I mean you can totally build an RC car running on an Arduino and controlled by an Arduino.But, the live camera using a Raspberry? Sounds like a pickle to me.Why not use an FPV camera. FPV cameras come with transmitter and receiver so you'll be good to go.All the best for your project.

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. :)

Pranks Contest!

Loved it!

I've seen people modifying their servos for continuous rotation. So, you can give that a try. :)https://www.instructables.com/Arduino-Nano-base...

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

Thanks!I never received one :(So, can you or anyone else here share a picture of the postcard so that I can take a look?

Thanks!

Nice.

Hi, Sorry that setup turned out to be lot complicated (for me)I can write a program to perform a simpler function.The main obstacle is that the Arduino needs to store some data on which button was pressed earlier.Apart from this everything is cool.I can code for a setup that turns on or off the relays and even display the outputs and inputs on the LCD.But, nothing that complex. Sorry! :(

Something like this:void loop() {if (){ //Condition for AoutA();}if (){ //Condition for BoutB();}if (){ //Condition for CoutC();}}void outA(){//Output of A}void outB(){//Output of B}void outC(){//Output of C}THIS IS JUST AN EXAMPLE ACTUAL CODE MAY VARRY!

Go for servos.Nothing can prove much simpler and easier than servos.Unless you don't want to use servos for whatever reasons.Hope that helps :)

Yeah, I think so.I also left my name here. Like a month ago. And I got a chance to judge a contest recently. It was fun!

Alright!

Hi,So, let me get this straight:You want three modes(inputs) to control two relays. Right? I can help. Let me know a little more about the input mode. Is it a pushbutton.

Alright go ahead. You can send me the details through personal message on my instructables account.

Hi,So, let me get this straight:You want three modes(inputs) to control two relays. Right?I can help. Let me know a little more about the input mode. Is it a pushbutton? Also what output(Result) you want for each input.

Hi,I'm from India. So, do you send those postcards to India also?Just curious. :)

If I were building this thing, I would consider using hobby grade linear actuators with Arduino (Which is quite obvious).ORNow I don't know what kind of switch you are using. But try considering Relays. Using a relay will be a lot easier and simple.Hope that helps :)

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

Awesome man!Totally loved it!

Nice work!

Pretty! :)

Cool!! Loved it.

You can see the Halloween contest 2017 here: https://www.instructables.com/contest/halloween2017/

I think physical certificate would be great.

Yeah! I also think so.But, I have never seen that happening. Instructables contests receives a lots and lots of entries.In terms of quantity of entries Makerspace contest 2017 received 2172 entries. So, instructables contest receiving 1 entry is kind of impossible.

Hi,If you mean to ask, How can you get a free three months PRO membership here's it:Instructables offers free three months PRO membership for publishing an instructable that has well documented text and nice photos. Simply any instructable that has a WOW factor. Check out featuring guidelines here: https://www.instructables.com/community/Featuring...Instructables also offers 1 year free pro membership for winning an instructables contest. Check out instructables contests here: https://www.instructables.com/contest/Hope that helps :)

Thanks! Sure I will give that a try :)

Hi,You need to be more specific about the LEDs that you are thinking to use.Some of the 12V SMD LEDs are really kind of hungry for current. And they can draw a lots of current that a lithium ion battery cannot provide.Include the link of the LEDs that you are thinking to use. As that will be the starting point for choosing other electronics and components. Also, I've found that lithium ion batteries cannot provide a lot of current. So, lipo batteries are the solution.

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!

Yeah! Lately, I had mentioned my experience as an author at Instructables on Facebook. I came to know more people in the hobby of electronics. But, nothing like getting a job or else.

Get the entire details here:https://www.instructables.com/community/Update-on-International-Entries-in-Instructables-C/

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

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?

Hi Isaac Emery,The maximum current that a transistor can withstand can be found in the datasheet.Now according to the datasheet of 2N2222, the transistor can safely provide a current of 500mA through the collector. (When a 500mA of current is passing through collector the DC current gain factor decreases to 40.) So, a current of 12.5mA is required at the base.(In your case this will be provided by the Arduino.)Now, although datasheet mentions 500mA usage safe personally I would not use 500mA. So, consider safety gap and use about 400-450mA safely.

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

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 that the one 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 than the one that you are using.

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

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

Nice!!Good luck for the contest :)

Awesome!!

Hi,Without the schematics of the circuit, it's really hard to say.But, I think you should try desoldering the record button (As you do not want to change your message).Hope that works!

Hi Isaac Emery,If you are just concerned with the power consumption of LEDs you can use transistors or MOSFETs for powering your LEDs.I've used transistors for controlling a bunch of LEDs and even motors lately and never had any issues.You can use this guide to power your LEDs. Just add the LEDs instead of the motor in the schematics. Finally, use PWM pins to control brightness.Hope that helps :)

Hello (Namaste),Nice instructable :)