Basic Low Cost (<RM300) Arduino Autonomous Sumo Robot
This autonomous is suitable for standard autonomous sumo robot competition which use black color game field with white color boundary.
Wiring:
1. Solder dean connector to AWG 16 red & black wire (20cm)
2. Solder wire (red & black) to both motor.
Arduino Pin #
Connect to
VIN
BATTERY POSITIVE (+)
5V
5V / VCC from sensor
GND
BATTERY NEGATIVE (-),
GND from sensor
A2
Left Ultrasonic (TRIG)
A3
Left Ultrasonic (ECHO)
A4
Left IR SENSOR (Yellow)
A5
Right IR SENSOR (Yellow)
2
Right Ultrasonic (TRIG)
3
Right Ultrasonic (ECHO)
5
MOTOR DRIVER (IN1)
6
MOTOR DRIVER (IN2)
9
MOTOR DRIVER (IN3)
10
MOTOR DRIVER (IN4)
Motor Driver Pin
Connect to
12V
BATTERY POSITIVE (+)
GND
BATTERY NEGATIVE (-)
OUT1
Left Motor (any side)
OUT2
Left Motor (another side)
OUT3
Right Motor (any side)
OUT4
Right Motor (another side)
IR Sensor Pin
Connect to
RED WIRE
5V from Arduino
GREEN WIRE
GND from Arduino / battery
YELLOW WIRE
A4 & A5 from Arduino
Programming:
Troubleshooting:
1. Check IR sensor for color detection. black (LED off) & white (LED on) by changing the sensitivity using potentiometer from IR sensor.
2. If ultrasonic cannot detect object, then increase the value of "MAX_DISTANCE" from Arduino line 3 & 4.
3. If motor run different direction, exchange connection from IN1 & IN2 (IN3 & IN4) jumper cable pin.
Note:
1. Don't overuse your LiPo battery until less than 11.1V.
Alright! So the idea struck out of blue one day when I was shocked to see someone sitting outside my office enjoying reading a newspaper!
I had no idea who this person was, when did he come and since how long was he enjoying his unsolicited stay just outside my cabin? You must be thinking what a fool I am but you gotta trust me on this, my office is one of the creepiest that one can get anywhere. Seriously!
I had an Arduino UNO clone ready at my disposal. So, all that I needed was an ultrasound sensor, and a Buzzer. Rest of the steps, circuit assemblies, software code are ensued in this tutorial. I hope this would excite few electronics newbies out there.
This is a nice project that you can continue to work on and modify as you learn more Arduino projects. This tutorial goes through the complete build for the bluetooth enabled robot in the first half of the video. It takes in total about 35 hours to 3D print, but can be assembled and programmed in around 30 minutes. Requires only 2 screwdrivers to build and does not require any soldering.
I wanted to design this thing to be inexpensive and use common parts, so this robot uses 9V batteries currently. They run out pretty quickly with a lot of use, so I will probably end up designing a new piece that allows for the use of rechargeable lithium ion batteries and Adafruit power booster.
Step 3: Lightly Sand Wheels and Put Together Legs.
The wheels print in two pieces so use super glue and put them together. Lightly sand out the imperfections. Put the 4 balls inside the castors and push them all the way until they snap into place. Attach the 4 castors to the legs like in the below picture.
Step 4: Get the legs ready and add the geared DC motors.
Get the two posts in the first picture and connect each one to each leg. Get the piece that will hold the battery in the second picture and screw that into one leg.
Find the small L shaped piece and attach it to a motor exactly like the 4th picture shown above. Do the same thing with the other motor, and attach both to the legs. Meet the two legs together, being sure the motors are facing the same direction and you should have something exactly like the picture below.
Step 5: Add battery with box and complete base.
Find the two curved side pieces in the first picture and connect them to the base according to the second picture. Place the battery box with battery onto the base according to the third picture and find the battery back piece and use it to enclose the battery like the last picture. The base is not complete.
Step 6: Add the middle pieces to the base and add the range sensor and motor driver.
- First use a skinny screwdriver and start the screw in the (robot's) left side middle piece according to the first picture. Its a tight fit and the screw will barely fit under that tab, I have broken the tab off many times, but luckily you have super glue and its an easy fix.
-Pull both battery wires and left side motor wires through the hole and tighten the screw you started. Tighten the second screw and secure the left side piece. Add the faux servo piece to this side and tighten both screws that hold it in, as in the third picture.
-Attach all 4 male to female wires to the HC-SR04 range sensor, it doesn't really matter what colors you use as long as they are different colors and you write down what color goes to what pin on the sensor.
-Put the range sensor into the whole on the side piece like in the 5th picture and put the L298N motor driver on top. You must remove the two jumpers on the motor driver shown in the 6th picture.
-Attach the wires from the battery and the left side motor to the L298N motor driver according to the diagram. Add some male to female (or male to male) wires coming from the positive and negative terminals of the motor driver.
-You will have now two connections in the negative terminal, one going in and one coming out. Just to be clear it will look like the 7th picture (above).
-Grab the right side middle piece and add the other faux servo piece to that side with two screws.
-Now pull the right side motor wires through the right side piece and attach those wires to the motor driver. Try to attach them in order, i.e. left side wire to left most hookup on the driver (same thing on the other side), that way you don't have to change anything in the code later.
-Use two screws to secure the right side piece, and use two screws to secure the motor driver, one per side piece is fine but there are holes to add all 4 if you want.
-Finally, add 6 different color male to female jumper wires to the 6 pins on the motor driver.
Step 7: Almost there.
-Use a screwdriver and add slack to the positive and negative battery wires as shown in the first picture (makes it easier for the battery to slide out the side when you need to change it).
- Attach the claws to the arms and attach those to the shoulder pieces as shown in the first picture. Attach the arms to the faux servo pieces, as in the second picture.
-Find the neck piece in the third picture and attach the C shaped piece (file name neckNoServo.stl) with two screws from the bottom. Pull all the wires through that assembly. Attach the neck assembly with 4 screws to the base that you have so far.
-Add the head bottom piece and pull the wires through that try to use the orientation of the wires in the 4th and 5th picture. Range sensor wires through the left most hole (robot's right), motor driver wires through the center, and power and ground through the right most hole. Attach 4 male to female connectors to you bluetooth module and tape them together if possible. It is going to go underneath your Arduino board like in the last picture. This is down so it can be unplugged easily when uploading new sketches.
-Wire everything according to the diagram.
Step 8: Done.
Attach the two halves of the face with 4 screws. Find the ears/antennae and attach them to filename earsNoServo.stl. They should now look like the T shaped pieces in the first picture. Attach them to the head top piece. Each one has two screws. Put the face piece on and pop the LEDs into the eyes, bending the pins at a 90 degree angle so they can't fall off like in the second picture.
Step 9: Upload the code and Download app.
Download the Android apps in the two pictures below.
Pair your bluetooth module to your computer or phone with the password "1234" it will be called HC-06.Everything else is pretty straight forward to use, if you watched the video, the apps are pretty intuitive to use.
To control the robot via bluetooth from you computer connect the serial monitor to bluetooth port HC-06 and use these commands with CAPITAL LETTERS (put caps lock on) and hit enter after each command:
S = stop, F = forward, B = backward, L = left, and R = right.
IMPORTANT*** anytime you need to upload a new sketch the bluetooth module must be unplugged or else the code will not upload.
Hi! In this tutorial you will learn to make a mood lamp with Arduino.
I know that you may have seen a lot of mood lamp projects with Arduino, but I wasn't very satisfied with them because they all change the color very abruptly. So, I decided to make a smooth mood lamp and I also made it to turn on only when the room is dark.
This project is good for those who are beginners in the Arduino's world.
Don't have components? Don't worry. Just click the component's name.
Step 2: Write The Code & Upload.
Write the code above on the Arduino program. Darker the ambient light is, the higher is the value read from the LDR. I used PWM to change led's brightness.
Step 3: Build Your Circuit.
Connect wire like the schematic above.
Step 4: It's done!
Try to add a sheet of paper around it to see it more smoothly, the paper acts as a diffuser. Feel free to modify this project to your way, and tell me your progress. Comments are welcome.
Hello world! I made a simple example project for the KY-031 sensor. In this tutorial I made a simple mailbox alert. Of course you can use this code for something else that produces shocks that you want to be notified of.
This time I made a Basic earthquake alarm with the KY-002 Shock sensor. Its can be used for multiple purposes, Like most sensors. In this case we use it as a earthquake sensor.
