![]() ![]() Solder all the red(+), black(-), and white(signal) thin wires according to the fritzig schematic Solder the male pins to the arduino pro mini Solder the 3.3 volts regulator on the arduino to raspeberry pi TX line Solder the NPN tranzistor and the corresponding resistor to it's baseį. After all the connectors are cut there must be soldered on the back of the PCBĭ. Cut the female PCB connectors, there are two 12 pin connectors for the microcontroller and two 5 pin connectors, there are two 3 pin connectors for the IR sensors, a six pin connector for the H-bridge and a pin connector for the raspberry pi communication (ground, TX, RX) b. You can use it as a reference oh how to build the electronics.Ī. I've attached the fritzing schematics in fzz format and as a picture. Building the PCB with the main electronic components. If you don't know how to install the Raspian operating system check this link.įor more information on how to install the camera and enable it check this official article.Ĥ. Insert the card with the latest Raspian installed, then take the pi camera connector insert it carefully on the raspberry pi, then insert it in the camera, then close the case. You will need a raspberry pi, a pi camera, memory card at least 4 GB, an pi camera connector. Then i've glued the headlight on the middle of the robot top part and drilled a hole near the headlight put the cables through the hole and soldered a small female two wire connector to it.ģ. I've cut the headlight exposing only the "head" part and soldered two wires to power it. Next the headlight part, i've used a 5 volts led flashlight for this. The sensors will be on the middle of the chassis one in the front and one in the back.Ģ. Using nuts an bolts we're going to install it on the chassis. The metal plate will be like an "L" shape, and will have two holes. We're going to mount them on the chassis using a small metal plate. We'll also need to install the two infrared sensors one in front and one in the back. In the last step we've already accommodated the H-bridge on the floor side of the robot. Raspberry pi communication pins: Tx: D11, Rx: D10ġ. a few cm ground clearance is needed to overcome small obstaclesĭon't forget to check the images for important details and building tips. it should have enough room for the electronics, batteries, and a raspberry pi case with a camera ![]() the direction will be controlled by varying speed on the front wheels so no separately direction mechanism is needed, also the robot will be able to rotate on the spot the back wheels should be able to move in any direction 360 degrees It will have traction on the front wheels by two separately DC motors The robot we're going to build is going to have the following specifications : ![]() Linux service configuration, package installation Basic arduino programming, this tutorial might be usefulģ. USB to serial FTDI adapter FT232RL to programm the arduino pro miniĢ. 2S 1300 mAh LiPo battery with XT-60 connector 3 v regulator (for communication between arduino and raspberry pi)Ģ2. NPN tranzistor (to drive the flashlight)ġ8. Small LED flashlight (it will be transformed into a headlight)ġ1. Small nuts and bolts, hexagonal metal spacersħ. Plastic sheet ( you can also use a plexiglass sheet here )Ĥ. Programming: Android applications, python, arduino language, serial communication, MQTTĢ. Linux : using docker, docker compose, configuring services using systemctl, video streaming The technologies and concepts will be exploring here :ĭevelopment platforms: Arduino, Raspberry pi, AndroidĮlectronics: H-bridge, using a transistor to drive a big load, infrared sensors Then we're going to build and install an android app and use it to control the robot remotely using the camera and a wifi connection. Then we're going to set up the raspberry pi powering the robot and configure the project and install various dependencies. The device will be able to move independently the two front wheels and it will be able to use it's headlight. So this being said it's more ambitious then the average projects, but i think you'll have a lot to learn by examining some ideas here or even replicating the entire project.įirst we'll build the robot using plexiglass, plastic sheets, DC motors with gearboxes and various electronic components. This interesting but complicated project will cover things from designing building a robot, to advanced configurations in linux (raspberry pi) to building an Android application and controlling the robot. ![]()
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