We Love Pin Maps!

I’ve been spending a lot of time with the chipKIT Cmod. It’s quickly becoming one of my favorite chipKIT boards to quickly prototype with.

Reasons why I like the chipKIT Cmod
Reasons why I like the chipKIT Cmod.

However, I have one complaint.

 

I never know which pin is which…
chipKIT Cmod pinmap.002I had been spoiled by the nice silkscreening on the larger chipKIT boards.

chipKIT Cmod pinmap.003

 

On the Cmod, space is tight, all the way to the edges, so they had to put machine pins versus the standard 0.1 spaced headers (because of the solder sizes) and chose the smallest surface month resistor size possible.

chipKIT Cmod pinmap.004

There are two places you can find the pin assignments on the Cmod to use. The first is the pin documentation tables in the reference manual and the second is the Board Def file for MPIDE.

chipKIT Cmod pinmap.005

But both of those are irritating to do while I am in the middle of assembling a project, and I am one of those annoying engineers that plan my project perfectly ahead of time (when I have my computer at my finger tips and a notepad and pencil to write down the pin assignments). Plus, my projects change constantly and I am re-wiring my Cmod as the project changes…

 

I needed a quick way to see the pin assignments.

A few months ago, Jay posted a pin map of the WF32.

 

WF32 Pin Map

Although it’s complicated (the WF32 is a much more complicated board), it got the pin assignments across pretty straightforwardly.

 

That would be perfect for the Cmod.

 

After doing a little research how people created these pin maps a (thank you Rei Villo from Embedded Computing), a draft of the Cmod pin map has been made!

cmod-pinout-revb
There is a thread on the forum that I’ll take suggestions from other people on what I should include (or they can just grab the files)..

 

Now that I have the pin-out diagram, I can print it out and put it in places it’s more useful for me, like in the box that I carry it in.

Digilent_cmodpackagingproposal

There are a few templates that can be shared (if wanted, I’ll make sure to watch the comments or the forum thread), but I love having the pin-out diagram easily accessible in places that the board is getting used.

So, what do you think about pin maps? Are they useful?  Where else would you put them (in case I overlooked something)? Please let me know in the comments (or if you want to help make pin maps, let me know also, we could work out a free-board-in-exchange-deal).

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About Larissa Swanland

I'm a bit of an electronics-education evangelist. After all, Education is how we learn about the world. Electronics make the world better. Engineers change the world. So more engineers that know how to design and create electronics? That's the kind of world I want to help create.

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