Meet Cheesoid - The Robot That Smells! -- Episode 503

In 2008 British comedy duo David Mitchell and Robert Webb created a robot that tries to smell the difference between cheese and petrol with limited success. Can Andy do any better with his desktop version of Cheesoid?

Bill of Material:

Product Name	Manufacturer	Quantity	Buy Kit
Pmod AMP2, SSM2377 Filterless High Efficiency Mono 2.5 W Class-D Audio Amplifier	Digilent	1	Buy Now
TMC2130 Bipolar Stepper Motor Driver Board	Trinamic	2	Buy Now
Red LED 3mm	Multicomp Pro	1	Buy Now
Green LED 3mm	Multicomp Pro	1	Buy Now
Orange LED 10mm	And Optoelectronics	1	Buy Now
Speaker, Micro, Dynamic, 1.5 W, 8 ohm, 104 dB, 570 Hz to 5 kHz	Kingstate	1	Buy Now
Threaded Rod 3mm	TR Fastenings	1	Buy Now
3mm Nuts	TR Fastenings	12	Buy Now
Breadboard, White, 8.3 mm, 34.5 mm, 45.5 mm - 170Tie Points	MCM	1	Buy Now
Breadboard, Green, 8.3 mm, 34.5 mm, 45.5 mm 170Tie Points	Multicomp	1	Buy Now
Breadboard, Red, 8.3 mm, 34.5 mm, 45.5 mm 170Tie Points	Multicomp	1	Buy Now
Additional Parts	Manufacturer	Quantity
Seeed Studio Xaio
MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout
Stepper Motor with Gearbox GM15BY-VSM1527-100-10D
20.22x27.28 Nitrile O Ring
3mm Dome Nuts
CDCard Reader SPI
M3 bolts
3D Printer Filament
Coffee Can