Project #1: A Simple LED Indicator and Project #2: Logic Probe
Because you can just move one wire and change it from one to the other, I decided to merge these posts.
Project #1: A Simple LED Indicator
Pretty simple, it's an LED that indicates. Any questions?
Project #2: Logic Probe #1
Some questions with some answers:
1. Touch the input "probe" wire to the 5V source. What is the result?
The LED lights up.
2. Touch the probe to the source ground. What was the result?The LED doesn't light up.
3. Explain the operation of this simple logic probe.When
a 5V source is attached to the end of the probe, current travels
through the LED, lighting it up. However, when a ground wire (or any
wire not carrying current) is attached to the probe, since there is no
current, the LED won't light up.
Any more questions?
