Gertboard software in Python 2.7 – part 2 – ocol and buttons

 Gertboard, Input and Output, interfacing, python programming, Raspberry Pi Hardware  6 Responses »
Nov 052012
 

Download Python Gertboard Programs ocol – Open Collector – Darlington Array Relay Driver I’ve managed to get the open collector ocol program written in Python. The ocol program drives the Darlington Array on the Gertboard. This can be used to switch up to 6 relays, each on a separate GPIO port. I’ve managed to write versions for both wiringpi for python (ocol-wp.py) and RPi.GPIO (ocol-rg.py) They are both included in the download link, which will always contain the most up to date versions. Here’s a comparison video of Gert’s ocol program running first, then my […more…]

Gertboard software in Python 2.7 – part 1 – motor and leds programs

 Gertboard, Input and Output, interfacing, python programming, raspberry pi, Raspberry Pi Hardware  13 Responses »
Nov 022012
 

Download Python Gertboard Programs I’ve been having a go at producing Python 2.7 versions of some of the Gertboard test suite. It’s partly as a learning experience for me and one which I hope will help others too. Which GPIO? Why not both? There’s two different ways to handle GPIO (General Purpose Input Output) in Python at the moment… Ben Croston’s RPi.GPIO Gordon Henderson’s WiringPi (Python Wrapper by Gadgetoid) The ultimate aim is to have versions of the Python programs using both systems. As a file naming convention, we’ll take the name from the original […more…]

Getting an inexpensive 16×2 LCD screen working on the raspberry pi

 Input and Output, interfacing, python programming, raspberry pi, Raspberry Pi Hardware  18 Responses »
Oct 182012
 
Getting an inexpensive 16x2 LCD screen working on the raspberry pi

I finally freed up one of my breadboards. I got my semi-permanent temperature sensing interface fully up and running with the Pi Cobbler – logging to COSM. So now I could take the components off my other breadboard and free up the Gertboard for other experiments. LCD Next The next thing I wanted to get working was a 16 x 2 LCD panel. (£6 from Tandy) Having seen other people get these working, I figured it couldn’t be all that hard and it wasn’t too bad actually. But I did make one small mistake along […more…]

Adafruit Pi Cobbler Review

 Input and Output, interfacing, python programming, raspberry pi, Review  7 Responses »
Oct 122012
 
Adafruit Pi Cobbler Review

Most of my recent posts have been focussed around the Gertboard. Not surprisingly, since not many are out there yet. Now that Farnell Element 14 has started shipping (I got mine today), we should expect to see a proliferation of info about clever things people have done with theirs. One thing Gertboard has done for me though, is kindled an interest in interfacing. Previously I posted about temperature sensors and logging. Since developing the temperature data logging capability, I now want to keep that going, but still be able to mess around with the Gertboard. […more…]

Using Temperature Sensors with Gertboard and the Raspberry Pi TMP36 and LM335z

 Gertboard, Input and Output, python programming, raspberry pi  22 Responses »
Oct 082012
 
Using Temperature Sensors with Gertboard and the Raspberry Pi TMP36 and LM335z

I spent much of last week’s “Pi time” wrestling to get temperature sensors working through the Atmega on the Gertboard. It was quite time consuming, but I managed to find some great helpful web sites and glean a bit of info from each. Once I’d got two different types of sensors calibrated, installed and working (and a third type temporarily abandoned), I started fooling around with logging the temperature readings. As things do, it evolved roughly like this… View the temperature data on the screen updating every second Make the temparature data stop scrolling and […more…]

BerryIO – a Browser Based IO Control System for Raspberry Pi

 Input and Output, raspberry pi  28 Responses »
Oct 022012
 

BerryIO by Daniel Bull. As demonstrated to me at the Milton Keynes Raspberry Jam Sept 30th 2012. Apologies for the high background noise level. This was shot live at the event, so we couldn’t ask everyone else to shut up or we’d have been lynched. ;) If you want a closer look, you can download Berryio from here http://frozenmist.co.uk/downloads/berryio/ In a nutshell, it’s a web browser based IO control system for the Raspberry Pi.

Gertboard LED test

 Gertboard, Input and Output, interfacing, raspberry pi  No Responses »
Sep 212012
 

Now I’ve got my Gertboard assembled, I thought I’d run some of the programs Gert supplied for testing and learning. First up LEDs. Delighted to say it worked a treat, so i thought I’d bring you a world premiere of the first blogged video of a Gertboard (sold to the public) in action. LEDs, camera, action… …and cut. Short and sweet. In case you’re wondering, I didn’t have enough jumpers and straps to make use of the last two LEDs on the board. I’ll be putting the rest of the board through its paces soon.

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