Replaced the chips in VIC-E and have spent the day testing the new control electronics. Have had a few teething issues, most of which could be fixed with suppression diodes!
Tuesday, 27 April 2010
VIC-E (Valve Interface and Control Enclosure), pronounced Vicky. Assembly is nearly finished on this unit, I have checked most of the functionality, such as the DAC and power relays. The 5V power draw is quite high, which causes the voltage regulator to get pretty hot! I have reduced the current draw from 187ma to 155ma by switching off unused peripherals on the dsPIC and reducing the drive to some of the LED's. It is running ok, but I may still glue a heat-sink to the VREG, or replace the LED's with low current versions. Irritatingly I missed a bunch of pull-up resistors on the main board, so had to bodge some on!
Posted by Matt at 11:52
Monday, 26 April 2010
Tuesday, 20 April 2010
Just received our operator chair! First impression are good, the chair has a good range of adjustments, its comfortable, has good adjustable arm rests and of course weight compensated suspension :) We will fit the controls directly to the arm rests, to minimise fatigue and maximise precise control.
Posted by Matt at 15:48
Friday, 16 April 2010
Wednesday, 7 April 2010
I have started to look at what development environment to use for the operator interface GUI. As this needs to be a fast boot lean system, I think it will run on Linux, and so far I have come up with Qt. I have installed QtCreator on both my Xp and Ubuntu machines, so far so good. I am developing a simple app within Ubuntu first, just to get all of the OI comms working between the GUI and the HexEngine, then I will start to get something a little more sophisticated together, and ultimately ported to the target system, which is yet to be defined!
Posted by Matt at 13:12