How to Build a @404 Robot

◦Hello everyone,

◦Today we will be exploring the robotic world through @404 Robot. ◦@404 is a 2-wheel robot that is equipped with obstacle avoidance sonar eyes and can be controlled through a remote control to stroll around in the desired direction. This project is simple but important to gain a basic understanding of how robots work.

First, we want to make sure we have all the parts for the project before we begin so go through your list and check. Now we can start!!!!

Start by grabbing your motors and connect the Dupont wires and these motors run on AC polarity so there is no positive or negative. It is important to note which wires are connected to the Dual Bridge Motor Controller so when the code is uploaded, we know what pins to set. The wires can be soldered or taped so they do not become loose.

Grab the bottom piece of the @404 robot and inspect it for any mistakes or rough spots left from the 3D printing, if anything just clean it up and smooth it out with a filer. Once the piece is ready then we can continue to fit the motors in. There are small holes in the frame which are to run the wires through do that and then there is an indenture in the back of the frame to mount the motor. Do the same for both sides they should fit tight in place which is good to hold the motor without the worry of them coming off and if you are concerned with that then you can use some super glue or zip ties to keep it from falling off.

◦Grab the wheels and attach them to the motors but make sure they are not all the way in. The wheels will scrape with the body so make sure there is enough room to let the wheels turn once we get the motors going.

Now we pick up the top frame of the @404 robot and inspect it for any mistakes and if it looks good then continue, if any issues fix them. Once we are good to go we are going to grab the led lights and plug them in to dupont wires (remember the long stick of the led is the positive side while the short once is negative). Grab the wired LED light and fit them through the small front holes if they do not stay in place grab some glue or tape and hold it in place until dry or not moving.

Now we move on to the dual bridge motor controller. As stated earlier in step 2 it is important to note the wires that will be connected to its respective pin so the circuit is complete. Grab the motor controller and connect the right side to out 1 and out 2 and the left side to out 3 and out 4. Then connect the in 1 and in 2 to pins 6-7 and in 3 and in 4 to pins 8-9

Grab the battery case and the positive 12v connection on the motor controller and split it to a dupont wire to connect to the Arduino UNO. Now grab the negative connection and split it to a dupont wire that will ground the Arduino UNO.

We now go back to the top frame, and we will be fitting the ultrasonic sensors in the rectangular opening grab 4 dupont wires and connect them to the sensor and note what is connected so when we plug in the pins, we get a reading on the sensor. Now fit the sensor (eyes) to the rectangular side and glue it down or use tape. Then connect to its respective pins.

We will now move on to the Infrared Sensor and remote control. Grab the IR sensor and plug the positive and negative pins as well as the signal pin and connect them to the Arduino Uno.

Once all the pins are connected grab the Arduino Uno and set it into its opening and make sure to lock it down with glue or zip ties. Do the same with the motor to make sure it doesn't more around inside the body. Grab the IR sensor as well as the battery case and feed their wires through the small hole in the back of the top body frame. Once everything is connected grab the top frame and join it with the bottom frame piece to create the full body. The battery case will be mounted on top of the body with the IR sensor in front of it. Use zip ties and glue to secure them in place.

Connect the Arduino to your PC and open the Arduino app to upload the code. Have your pin notes ready to fill in the pins that are connected. Once the code is uploaded unplug and insert the battery into the case and lights should come on. Grab your remote and try to play around with the Arduino.

play with your robot!!!

https://www.youtube.com/watch?v=bjMdywzu4W0