Planet HantsLUG

January 27, 2015

Steve Kemp

Recording gym-visits on Linux.

I go to the gym every couple of days. I lift things up, then put them down, and sometimes I repeat this process another 30 times. When I'm done I write down what I've done, how many times I did the lifty-droppy thing, and so on.

I want to see pretty graphs. I want to have records of different things. I guess I just need some simple text-boxes:

   deadlift  3 x 7 @ 210lbs.

etc. Sometimes I use machines so I'd say instead:

  converging seated-row  3 x 8 @ 150lbs

Anyway that's it. I want a simple GUI, a bit like a spreadsheet where I can easily add rows of each session. (A session might have 10-15 exercises in it, so not many.) I imagine some kind of SQLite database for the back-end. Or CSV. Either works.

Writing GUI software is hard. I guess I should look at GtK or Qt over the next few days and see if it is going to be easier to do it online via a jQuery + CGI system instead. To be honest I expect doing it "online" is liable to be more popular, but I think a desktop toy-application is just as useful.

January 27, 2015 12:00 AM

January 24, 2015

Adam Trickett

January 19, 2015

Philip Stubbs

Quad-copter Build Log - Part 2

Working Transmitter

After a bit of fiddling, the transmitter works. I have not tested it for range, other than making sure it works across the length of the house. At the moment it only has the standard NRF24L01 module. Although the high-power module has turned up, the antenna for it is still in transit.

As there is still no Quad copter to control, most of the testing has been done by watching numbers scroll up the screen from reading the serial output from the receiver. As this was getting painful, a simple processing script was written to display the control positions on the screen. 

Almost as soon as I started this, I wondered if it would be possible to get the processing script to pass the stick controls onto a flight simulator. A quick look at FlightGear turned into a quick flight around L.A. That is a project for another day.

Flight Control Board

A flight control board has been ordered. I decided on the AfroMini32. This has the usual accelerometers, gyroscopes and a barometer. It also uses a 32 bit micro controller so should be a capable piece of kit. Hopefully it will all come together by the summer.

by Philip Stubbs ( at January 19, 2015 10:37 AM