Building the table
09 Dec, 2013
Building the table. This was accomplished using mole-grips and Carr’s water biscuits for fuel.
Pressure sensor mounting
09 Mar, 2013
Mounting the two pressure sensors for volume measurement on a piece of stripboard. The sensors used are Freescale MPX5010DP.
Completed control panel
02 Mar, 2013
The completed control panel. This was designed in Inkscape and then sent to Razorlab in the UK to be laser cut. It arrived back with masking tape on, which I then sprayed with white paint. After a clean up with some white spirit I finished it with a clear matt lacquer to protect it.
A lot of work and planning but it looks great.
Output override PCB wiring
02 Mar, 2013
A closeup of the output override PCB wiring. This was the last one in stock so I snapped it up – it saved me a load of work and looks much neater than trying accomplish the same task without a PCB. The override PCB also has headers for external LEDs to indicate when an output is on – these are linked to the valve LEDs in the P&ID on the control panel
Control panel wiring
02 Mar, 2013
This is the control panel wiring – mostly complete. The heatshrink over each switch covers the zener diode circuit which allows the tri-coloured LEDs to be red when the switch is in the off position. This would have been a lot neater with a custom made PCB