Eletronics Design

Assignment

Group-Assigniment

more detail will shown on class link

IN our lab the instructor explains the major fator to Characterize the design rules for your in-house PCB production process: feeds, speeds, plunge rate, depth of cut (traces and outline) and tooling.

here there is more description on work on this group web page:Group work description is on here

Individual assignment

Table of Content

• Testing the compact milling machine (Group-Assigniment)
• Detailed aspecs of the machine(Group-Assigniment)
• Making an in-circuit programmer(Individual work)
  • UALT&I2C ,SPI comunication
  • PCB DESING IN KICARD
  • FILE PREPARATION TO GENERATE G -CODE
  • MACHINE SETTING FOR PCB PRINTING/li>
  • PCB HAND SOLDELING AND TESTING

Making an in-circuit programmer

DESIGN PROCEDURE OF MY DESIGN of my development board and circuit programmer

UALT&I2C ,SPI comunication

UART, which stands for Universal Asynchronous Receiver-Transmitter, is a simple and widely used communication protocol for serial data transmission. It uses two wires to transmit data, one for sending and one for receiving, and does not require a clock signal. UART is often used to communicate between a microcontroller and a peripheral device, such as a sensor or motor. The communication is asynchronous, meaning that data is transmitted without a fixed timing relationship between the sender and receiver

I2C, or Inter-Integrated Circuit, is a synchronous communication protocol commonly used to connect multiple devices on a single bus. It uses two wires, one for data and one for clock, to transmit data between devices. I2C allows multiple devices to share the same communication bus, and each device is identified by a unique address. The communication is also synchronous, meaning that the sender and receiver are synchronized to a common clock signal.

SPI, or Serial Peripheral Interface, is a synchronous communication protocol commonly used to communicate between microcontrollers and peripheral devices such as sensors, LCD displays, and flash memory. It uses four wires to transmit data, including a clock signal, a data signal, and two control signals. The communication is synchronous, meaning that the sender and receiver are synchronized to a common clock signal. SPI allows for high-speed data transmission and is often used for applications that require fast and reliable communication

UALT&I2C ,SPI comunication table of defference

design procedure of my circuit programer

reason why to design its programer

bleifly ,my programmer will convert the USB signal from your PC into UART communication so that i can program the ESP32 on the development board. This will allow me to send code and configuration information from your PC to the ESP32 using the chosen communication protocol of the microcontroller. The programmer will act as an interface between your PC and the ESP32, ensuring that the data is properly formatted and transmitted for successful programming.

Here you can find the procedure i used to design programmer board

Design procedure of my programer

List of components

• CH340C programmer
• AMS1117 voltage regulator
• USB connector
• LED
• Capacitor (10uF)
• Resistor (optional)

schematic diagram of programer

view of pcb after joining ( connecting )the way

Isonometric view of pcb design of programer

circuit board in schematic diagram .

Exporting My PCB BOARD IN SVG FORMAT

Exporting your PCB board design in SVG (Scalable Vector Graphics) format can be useful for sharing your design with others who may not have access to KiCad software or including the design in a document or presentation. To export your PCB design in SVG format from KiCad, you can open the PCB layout editor, select "Export" from the File menu and choose "Export SVG." You can then customize the output file name, layers to be exported, and scale before generating the SVG file. Once exported, you can open the SVG file in a web browser or vector graphics editor for viewing and editing as needed.

afte exporting my pcb board in svg format the is a process used to convert svg into G-CODE

• Open your web browser and go tohttps://mods.cba.mit.edu/. This is the website for the Massachusetts Institute of Technology (MIT) Center for Bits and Atoms (CBA) Modular Machines program.

• Click on the "Mods" button on the top right corner of the screen, and then select "Roland" from the drop-down menu. Roland is a type of milling machine that uses G-code to operate.

• Once you've selected Roland , you'll be taken to the Roland module page. Click on the "Open Roland " button to open the Roland software.
• In the Roland software, click on the "File" menu and select "Import." Choose your SVG file from your computer and click "Open." Your SVG file will now be loaded into the Roland software.

• after satisfied with my settings, click on the "Post" button to generate the G-code for your milling job. The G-code will be displayed in a new window.

• Copy the G-code and save it as a text file on your computer.
• Connect your Roland SRM-20 milling machine to your computer using a USB cable.and set the pcb work piece.

• Open the Roland SRM-20 software and click on the "File" menu. Select "Open" and choose the G-code file you just saved.


this is a picture of programer pcb afeter PRINTING


• Click on the "Send" button to send the G-code to your milling machine. The Roland SRM-20 will now start milling your design. and eletronic components soldering on designed pcb




< download file