Electronics: Circuit Checkoff
Build each circuit yourself in Tinkercad, working from the printed diagram. Get it working, then get it signed off. Once all nine are done, rebuild 5 through 9 with real components.
Name: Period: Date:
| # | Circuit set | Done when | Sim | Real |
|---|---|---|---|---|
| 1 | Voltage | Meter reads 1.50, 1.50, 3.00, 1.50 and 1.12 V | n/a | |
| 2 | Ammeter | Both ammeters in circuit 4 read the same current | n/a | |
| 3 | Switches / LEDs | LED lights only while the button is held | n/a | |
| 4 | Potentiometers | You found the knob position that gives 4.5 V | n/a | |
| 5 | Breadboard / LED | LED lights through the button, 220 ohm in series | ||
| 6 | Breadboard / LEDs | Voltage table below filled in for all four colors | ||
| 7 | Photoresistor | LED brightness changes as the light changes | ||
| 8 | micro:bit / 2 LEDs | A lights one LED for 2 s, B lights the other | ||
| 9 | micro:bit / LED / servo | Tilt changes the LED, light moves the servo |
1 to 4 are simulation only. 5 to 9 get built twice, once in Tinkercad and once for real.
6. Forward voltage of each LED color
Measure across the LED itself, not across the resistor, and press one button at a time. Write your prediction down before you measure. Fill the Tinkercad column now and the real column during the physical rebuild.
| LED color | Prediction | Tinkercad | Real LED | Difference |
|---|---|---|---|---|
| Red | ||||
| Yellow | ||||
| Green | ||||
| Blue |
Questions
- Which color needed the most voltage? Which needed the least?
- Order the four colors by voltage, then order them by wavelength (red is longest, blue is shortest). What do you notice?
- Did your real LEDs match Tinkercad? If not, does that make the simulation wrong?