Tag Archives: Cortex M3

DipCortex – GPIO Intro Video and Guide

To help get you up and running and writing your own code for the DipCortex we have started our own GitHub repository, written a guide and uploaded a video.

Be sure to view at 720p so you can read the code!

This video takes you through the setup procedure, importing our codebase from GitHub, running through the code. Building it and boot-loading the bin file over the USB connection.

These guides are applicable for both the DipCortex’s and the up coming SolderBridges that use the same processors. We hope they are useful, if you have a preference for the subject of the next guide let us know!

Wow the PCBs are here!

Just 2 weeks after ordering from Seeed Studios in China, SolderSplash’s first PCB is here. Robs wasted no time and quickly populated the first PCB for me to develop the software with. Here are some shots ..

TI has helped us out with a few samples of the LM3S6100 and the relays are on back order from Farnell, they will be with us in a week or two. The only issues so far is the RJ45 socket we ordered didn’t quite fit, altering it slightly gets it in, an easy tweak for the next issue.

I love the next bit, getting a new board running is always exciting.

Network Controller Coming Along Nicely

The Network Controller is taking shape, PCB Layout is almost complete, were down to checking and tweaking. Most of our time over the last week has been spent refining and reducing the cost of the materials. I can’t wait to write some code for it! Here is what the layout looks like :

PCB Layout of Texas Instruments Arm Cortex based network controller

PCB Layout of the Network controller (Click to Enlarge)

Since our last update we have re-thought the power topology instead of an AC input the board will now require a 12v DC input. We can use this to directly drive the relay coils and drop it down to 3.3v for the rest of the board. On the left we have an option of either volt free relay switching or you can supply your own power AC/DC  (0-240v) which can be switched to any of the 4 outputs. This will hopefully save some wiring, it will for Rob’s garden anyway!

We added a header for an external switch, which could have many uses, my first thought was this could be used as an override to open/close all the relays when pressed, if you don’t have your iPhone/Android handy.

Finally I added a SPI header, this probably won’t have any purpose for this application, but we have plans for our next product and this board could be its controller.

As a fun distraction we are also modeling the board in sketchup to make sure it ‘s all sensible before we press the button and order our first prototype PCB’s. I’ll post a photo soon of our progress on that.

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