- Topic 1
1 1 Here is the Sparkfun Inventors Kit. We will be investigating. We will be investigating Circuits 1, 2, 5. Sparkfun SIK Guide
- Topic 2
- Topic 3
LEDs and light
A LED or light emitting diode is an electronic device that emitts light when the correct voltage is applied to it.
It is polar in that current only flows one way accross the diode, inside the plastic cap. The longer leg (anode) connects to the + side of a battery.
LED in a circuit
When a LED is in a circuit, it it always in series with a resistor. This protects it from burning out.
To work out the value of the resistor use Ohms Law. Divide the voltage ot he power supply with the suggested current rating from the data sheet.
An Arduino has an output of 5v direct so 5/16 mA = 330 ohms approx.
Use a 330 ohm resistor.
- Topic 4
- Topic 5
Lights and arduino
LEDs come in many colours. But you can get one lED in all colours!
Here is the Sparkfun Inventors Guide. The experiment you want is number 12.
- Topic 6
- Topic 7
- Topic 8
The Nokia 5110 is a great little display that is easy to use.
In the 90's, millions of these displays were used so because of economies of scale, they remain very cheap.
Also, a lot of enthusiasts used them and created libraries which thay have shared.
Remember. They are designed to run on 3.3 volts.
For extended use concider 10k ohm limiting resistors
You can use PWM to adjust brightness
- Topic 9
- Topic 10
- Topic 11
- Topic 12
1602 16X2 LCD display
http://instructables.com/id/ GLO-The-Midnight-Message- Board/ b c
- Topic 13
- Topic 14
Light sensing LEDs
LDR Serial monitor
- Topic 15
- Topic 16
- Topic 17
- Topic 18