Embedded Systems, Electronics by Ebeed Ahmed

Author:Ebeed, Ahmed
Language: eng
Format: epub, pdf
Publisher: MicroMonitor
Published: 2017-03-27T00:00:00+00:00

Step 2: Start Soldering

There are many instructables and other online tutorials for soldering.

I used a large verro board because I didn't know how exactly the circuit will occupy.

I started to solder the components on the board.

After I finished assembling and soldering, I used an architects saw to cut the board into the size which the components actually fit into.

Step 3: Install Pinguino Boot loader

The boot loader is the initial software that enables the Microcontroller to communicate with the PC through the USB port.

It also enables the Microcontroller to self update its software sent on the USB port.

This is the link were you can get the boot loaders of your circuit. In my circuit, I 've chosen the PIC18F4550 Microcontroller with the 20MHz Crystal

http://pinguino32.googlecode.com/svn/bootloaders/8/usb/v4.x/hex/

The 18F4550 Microcontroller chip is a self programming Microcontroller.

This means that the Pinguino board can be used to update its Firmware to a new one making it capable of doing a new function.

Initially, the Microcontroller cannot directly communicate with PC using USB port. But it can be programmer as a normal Microcontroller.

You can program your chip on an external USB or Serial Microcontroller programmer.

You have to do this step only once. After this, when completing Pinguino, you will not have to use a programmer any more.

I installed the bootloader using a simple programmer I previously built. It is called JDM Programmer.

You can build it your self. It is simple and direct.

Here is a link for the Instructable of the programmer

http://www.instructables.com/id/18F4550-Programmer-in-Ten-years/

I used the PicPGM programmer with my serial JDM programmer to load the target bootloader file (Bootloader_v4.13_18f4550_X20MHz.hex)

After successfully install the Bootloader Hex file on the Microcontroller chip , you can insert it into the Pinguino board.

Congratulations, you have completed the Pinguino board Hardware part!!

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