This week we will have to uses are knowledge from the previous week on arduino to help create a buggy that is able to move/ turn. Where we are provided with two stepper motor, arduino board, a LDC screen, a ultrasonic module, a frame/ housing for components, a set of wheels and wires needed for this build.
Author: Kenny Chui
Arduino – Ultrasonic Module
This week we are introduced to ultrasonic module.
Connecting the Ultrasonic module pins/ wire on to arduino board:
- Black (Ultrasonic module) – Gnd > Gnd (Arduino board)
- Yellow (Ultrasonic module) – +5V > Vcc (Arduino board)
- Blue (Ultrasonic module) – Trigger > D8 (Arduino board)
- Red ( Ultrasonic module) – Echo > D7 (Arduino board)
Arduino – LCD Screen
This week we are introduced to LCD (Liquid crystal display) screen.
Connecting the LCD screen on to the arduino board:
- Black (LCD Screen) – Gnd > Gnd (Arduino board)
- Red (LCD Screen) – +5V > Vcc (Arduino board)
- Blue (LCD Screen) – SDA > A4 (Arduino board)
- Yellow (LCD Screen) – SCL > A5 (Arduino board)
The Contrast on the LCD screen has to be adjust this is simply done using a blue trimming tool that was provided to us, and rotating a dial which is located at the back of the screen.
Arduino – Stepper Motor
What is a stepper motor & their applications?
Stepper motors are DC motors that move in discrete steps. They have multiple coils that are organised in groups called “phases”. By energising each phase in sequence, the motor will rotate, one step at a time. (source).Where they can be used for many application such as CNC machining, 3D printing, Medical imaging machinery and many more.
There are four different types of stepper motor and they are permanent Magnet, Hybrid, 4 phase unipolar and 2 phase bipolar. for this week we will be using a 4 phase unipolar stepper motor.
Week 8: Computer-controlled machining + moulding and casting
This week assignment is to create a 30x30x5mm tile in fusion 360 which we will generate a toolpath that will cut out from a solid 50x50x10mm block or the stock , using a 3mm flat or ball-nose end mill.
Week 7: 3D Printing and Scanning
For this week assignment we will have to laser scan a small object. which we load the scan into meshmixer or use addition CAD software to project curves onto the scanned mesh to create a tidy CAD geometry/ repair it, and save it as an .stl file for 3D printing.
Week 6: Embedded Programming
Week 5: Electronic Design
This week are assignment is to redraw the Echo Hello world plus board in Eagle and generate a PNG file suitable for milling. Once created the PNG, mill out board and test it by uploading a program on to it.
Week 4: Electronics Production
This week we have to assemble a ISP programmer by stuffing a board following this design and instruction from: Building the FabTinyISP. As well as testing the board if it passes a visual inspection (Good traces, viable solder joints, correct components in the right places) and see if the board could accept a program loaded onto it.
Week 3: Laser Cutter, Computer Controlled Cutting
For this week we have to design a (parametric) press-fit construction kit, cut out using the laser cutter. Which could be assemble together to make a 3D model.