My Picorder has reached another version. This time it’s got a proper case and lots more sensors. With the help of Amanda, my step-daughter, we shot this putting-it-together video that shows all the parts and bits-and-pieces that go into the box!
#RaspberryPi Car Cam with GPS data & map
Martin O’Hanlon has continued his project to install a Raspberry Pi and camera in his car and now overlays the recorded video with a GPS map as well as OBD data.
Read analog sensors on the #RaspberryPi with the MCP3008
Matt over at Raspberry Pi Spy has done a great little tutorial that uses an MCP3008 analog-to-digital convertor to read a light-dependant resistor and TMP36 temperature sensor. He’s kept it simple and clear and it’s well worth a look if you want to read analog inputs.
Experimenting with the Easy Pulse and #RaspberryPi
As part of my Picorder project, I bought an Easy Pulse from Embedded Lab (via Elecrow). It’s a red PCB with a plugin fingertip sensor (see above). The example code you can download is in C and my Picorder code is in Python. Plus, their code does a lot of messing about with filtering and removing bits and pieces that I really couldn’t be bothered with. Most of theirs is to do with plotting the pulses on a graph as well, and I don’t need that. So, I wrote my own version in Python. I’m once again using the Key Lime Pi from Nwazet which is essentially an MCP3008 ADC slapped onto a Pi cobbler breakout board. (I’m being very ungenerous there – it’s a brilliant, brilliant product. You can buy it in the UK from Pimoroni).
Anyway, so we’ve got Fingertip sensor->Easy Pulse board->Key Lime Pi->Raspberry Pi. The Python code is available at:
https://github.com/recantha/picorder-v3/blob/master/test-ep.py
I would have pasted it here but WordPress isn’t playing ball!
Install PostgreSQL database engine on your #RaspberryPi
Chris Mobberley has been looking at PostgreSQL and has found a simple way to get up-and-running.
Cambridge Raspberry Jam – 7th December – #RaspberryPi @Raspberry_Pi
Booking for the 4th Cambridge Raspberry Jam of 2013 is now open.
This time we are running two EventBrite events for registration.
The first one is for a Scratch programming workshop for kids and is at http://camjamworkshop.eventbrite.co.uk
Even if this one is sold out, please please please join the waiting list as we’d like to get an idea of the amount of demand out there for these workshops and next time we’ll have more Pis and therefore will be able to take more kids!
The second event is for the afternoon Jam which this time is being called “Introduce and Inspire” and is aimed at beginners and those who have just got their Pis. We are including several sessions for more advanced users too! Our aim is to give everyone attending lots of food-for-thought as to how they might use their Pi! Registration for the afternoon Jam is at: http://camjam.eventbrite.co.uk
Please note that if you get a ticket for the morning event then you do not need one for the afternoon – your morning ticket automatically grants you to entry to the whole Jam.
More information about the two parts of the Jam are held on the EventBrite pages listed above.
Tickets for this event normally sell out, so if you want to come along, please book now! The event will be live-streamed as it was last time and there will be a separate event for bookings nearer the time.
As usual, any questions can be sent to the organisers of the event – Michael Horne or Tim Richardson.