David Bartolo's page

Hi guys,
Just wanted to thanks for everything - Andrew, Justin, and all you classmates. Thanks for all your support, and good luck to everyone!
David

Here is a block diagram of the rubbish monitor. At this stage I am working from the inside out...

Squirter will spurt salty water at bin lid, when water evaporates, a trace of salt remains:

… Continue

Came close to leaving the course last night. Trying to fit in work, family, study sometimes gets too much. But talking to friends helps, and I am now paring down my ideas and working from most to least essential.

A) Most essential
Most essential for me is an inside bin display that leaves a trackable pattern on the bin lid based upon daily data, and allows 2 weeks to be compared.

This will be acheived with a rotating turntable with salt water solution, valve solenoid and eyedropper bott… Continue

Sorry I couldn't make it last night - I would have liked to get some stepper driving tips, but my son was ill. Nevertheless, I can post my latest thoughts on the internal bin.

the image below shows the individual components. I plan to use gravity-fed liquid through two valve solenoids. This will either dispense coloured liquid onto canvas on top of the bin, or maybe onto the bin lid itself. The colours will represent alternative weeks of rubbish.
Liquid will be directed via a movable nozzle to… Continue

Thanks for the feedback last Wednesday guys. I find this a very iterative process. I am loathe to come up with a design that will be impossible to create, and so I am continually testing small elements of things I may be able to create. So far I have proof of concept for:

* Filling outside bin and displaying LEDs
* Wireless transmission between two arduinos
* Melting wax using a Peltier device

I am currently ripping apart printers and CDROM drives - maybe on Wednesday I could have a go trying… Continue