I spent the first 2 weeks of Physical Computing in familiarising myself with the components. The first task that I undertook was to light an LED and then multiple LEDs if the former is successful.

I also played around with resistance and no resistance to see how the outcome is affected. I tried to measure it using a multimeter but I’m still learning how to use one.

I attempted a basic circuit using a 220 Ohm resistor.

I chose a blue LED for the first circuit and learnt along the way that every LED colour needs different voltage and resistance.

220 Ohms of resistance turned out to be too high for 2 light bulbs.

Double grounding shuts the circuit

LED bulb blue:

White wire from Arduino pin 2 (5V) outlet to +ve

Brown +ve from column above to resistor (or Switch if Switch is required)

Resistor from same brown wire row to LED same row, positive inlet (long side)…(short side) negative outlet to purple wire in same row

Purple wire to -ve

Black wire -ve in row with with brown wire +ve

Other side of black wire goes to Arduino Ground pin (white box, second from bottom)

When taken a positive end of the wire to the resistor, it caused the blue LED to light up as well.

Red and blue LEDs: did not work with 220 resistor. Tried without resistor and that worked for a bit. Then Red bulb short circuited and popped.

Tried a second circuit on the opposite side with Green LED

Connected yellow wire to 5V power on Arduino, took the other end to +ve.

In the same column above, put orange wire in +ve and took the other end next to resistor. Put 220 Ohm resistor in the same row and took it to +ve (longer) side of green LED.

Took a red wire to negative side of LED in the same row and connected other end to -VE.

Grounded the circuit by connecting two wires at the end of the board. Orange: -ve to -ve and brown +ve to +ve.