As well as standard workbench tools and soldering equipment, you will need :-
1 x PicAxe 08M or 08M2 microcontroller chip - see below
2 x 10K resistors - all are 1/4 or 1/8 W
1 x 330R resistor
1 x 22K resistor
1 x 560K resistor
1 x red LED
1 x 10K linear dual gang slide potentiometer (60mm).
2 x 1N4148 or similar diodes. Just about any small diode will do
1 x 0.1 uF capacitor (10V or more)
1 x 28mm x 4mm piezo sounder. This MUST be a low profile type or it won't fit
1 x PX28A 6V keyfob battery (4LR44 PX28A A544 L1325 equivalents)
1 x stereo 3.5mm jack socket
1 x jack plug for probe. This can be 2.5 or 3.5mm, mono or stereo
1 x stripboard 22 x 12 holes
1 x spring from a retractable pen
1 packet of TicTacs. Your choice of flavour
You'll also need a few bits of link wire and something to decorate it. I used the old Blue Peter
favourite - sticky back plastic.
If you need to brush up on your soldering technique, there's an excellent guide HERE
Most of my parts came from Maplin
(UK), but Mouser or your friendly local on-line electronics store will have these in other parts of the globe. All the parts (including Tic Tacs and battery) shouldn't come to more that 10 pounds (16 dollars), but that may vary depending on where you are, and doesn't include p+p, or the programming lead (see below).
I've used a PicAxe 08M microcontroller which comes as a blank chip and needs to be programmed. To do this, you will need a programming lead and the free programming editor
software. Both the PicAxe chip and the lead are available from Tech Supplies
in the UK or see HERE
for other countries. The 08m has been superseded by the 08m2 - Either will work.
Once you have the lead, you only need a PicAxe, two resistors and whatever sensors and output devices you choose to have a full PicAxe development kit which can program any of the PicAxe range, so you can design your own projects. I have an Instructable planned which will get you well on the way.