Bits and Pieces - JuliaElizabethLittle/peeMarksmanship GitHub Wiki

Electronic Bits

So, first of all we obviously needed the sensors.

Sensors

We first had the idea of a liquid sensor that measured the amount oof liquid that goes down through a pipe, here. But as you will have seen in you visited the page, it measures LITRES of liquid....and well, it seemed a bit much, considering we we're measuring someone's pee...

So we took a look at cars and windscreen wipers that automatically turn on when they detect rain. And decided to go for those sensors. Since apart from the digital entry that measures if it's raining or not, there is also an analogical input that gives you a value between 0 and 1023. RainSensor

The thing is, we bought the sensors, and received them (on time) but they weren't as good as we'd hoped. We bought three sensors (one for each level of accuracy) and only one would read the liquid on them, and all three after 5 minutes of them being around water started to oxidate. So that was a bit of a disappointment... We are going to try soldering over the circuit of them to see if they then work better. So far we've been testing with Pot sensors to see if our code was working properly. Here we can see a diagram of how it should be connected:

Arduino

We bought an Arduino Uno board, with some wires and a bread board and more cables.. We also needed some pushbuttons and a LCD display. All the other things we already had (resistors, LED's etc). But can also be found at the Arduino Store

Further developements made us switch to the much cooler and more importantly internet connected Arduino Yún

Not-so-electrical bits

Here is where we had to improvise... Because we were making a bullseye that had to go in a toilet, we needed it to be waterproof, so being the designers that we are, we decided to model a 3D bullseye of our own design and 3D print it.