LED Controller – Planning

After learning how to use the various features of the PIC16F1825 controller that I need for building and writing the LED controller it is time for some planning.

First the HW. Following is a schematic diagram that I prepared with the Freeware version of the Eagle application for Mac. Here are the details.

Screen Shot 2015-05-25 at 2.16.42 AM

It is an excellent app and I thank my friend Tomer for telling me about it. The freeware version is limited but completely suitable for my current educational purposes. I will even allow me to design a board if I choose to do so – the freeware version is limited to 10cm by 8 cm boards and this size is enough for my LED controller.

The application is a bit non intuitive, especially with the MAC single-key mouse, but after a bit of practice and watching this video, I managed to draw the whole schematic in about 1.5 hours.

So, here is my schematic diagram.

led-controller-schematic-v1

It looks a bit complicated but it is not. It consists of the following components:

[table id=4 /]

Most of the wiring in this diagram are for the 7-segment display. I think that the rest is self explanatory to some extent and will be clarified in the next posts when I start writing the SW.

I’m aware that this schematic is probably “on the face” as we say in Hebrew, which means very poor and I’m sure I will improve as we go.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s