Every 3D lab in the course

0Black · Bench Ready Open Band 0

Concept lab · 3 missionsThe board, a sketch, and an errorIt is the same Uno, with a laptop and a phone charger beside it. Click any part to see what it does, or press ▶ under the model for a tour.Open In the lesson

1Brown · Signal Tower Open Band 1

Concept lab · 3 missionsThe loop, the LED and the stripesBefore you build, you can try the whole of Part 5 in a lab, including the things you must never do on your real board. It is the one light circuit: pin 8, the 220 ohm resistor, the LED, the − rail and GND.Open In the lesson

Part 5One light on pin 8Band 1 · Signal TowerOpen In the lesson

Part 7The resistor on the other sideBand 1 · Signal TowerOpen In the lesson

Part 6The signal towerBand 1 · Signal TowerOpen In the lesson

SwapTraffic light moduleThe traffic light moduleOpen In the lesson

2Red · Mood Lamp Open Band 2

Concept lab · 3 missionsThe fake dimming, the for loop, and colourThe lab has Band 2’s own circuits: the LED on pin 9 from Part 5, and the RGB LED on pins 9, 10 and 11 from Part 7. Slide analogWrite from 0 to 255 and watch a picture of what the pin is really doing, then slow it right down.Open In the lesson

Part 5One light on pin 9Band 2 · Mood LampOpen In the lesson

Part 7RGB LED, common cathodeBand 2 · Mood LampOpen In the lesson

Part 7RGB LED, common anodeBand 2 · Mood LampOpen In the lesson

SwapRGB moduleMood lamp on an RGB moduleOpen In the lesson

3Orange · Combination Lock Open Band 3

Concept lab · 3 missionsThe floating pin, the spring and the lockIt is your Part 3 button on pin 2, with b3_02_serial_watch.ino running and its serial monitor beside it. Change INPUT_PULLUP to INPUT and watch what a floating pin prints.Open In the lesson

Part 3One buttonBand 3 · Combination LockOpen In the lesson

Part 6Button and lightBand 3 · Combination LockOpen In the lesson

Part 11The lockBand 3 · Combination LockOpen In the lesson

SwapKeypad lockThe keypad lockOpen In the lesson

4Yellow · Night Guard Open Band 4

Concept lab · 3 missionsFrom light to a decisionThe lab is your Part 7 build: the knob on A0, the light sensor and its 10 000 ohm resistor with their middle point on A1, and the lamp on pin 9, running b4_05_night_guard_worked.ino. Take it to the five places of your brightness walk, at three times of day, and follow each step: the light, the sensor's resistance, the volts at A1, the number, and the decision.Open In the lesson

Part 5The knobBand 4 · Night GuardOpen In the lesson

Part 6Knob and lightBand 4 · Night GuardOpen In the lesson

Part 7Knob, light sensor and lightBand 4 · Night GuardOpen In the lesson

SwapRain alarmThe rain alarmOpen In the lesson

SwapRoom monitor, three-pin moduleThe room monitorOpen In the lesson

SwapRoom monitor, bare four-pin sensorThe room monitorOpen In the lesson

5Green · Simon Says Open Band 5

Concept lab · 3 missionsA call, a note, and a board that is busyThe lab has two of this band's boards. The first is your Part 4 build running b5_02_functions_worked.ino: step through it one line at a time and watch loop jump into playStep, fill in which, play the note, and come back to the line after the call.Open In the lesson

Part 4Four lights, four buttons, one buzzerBand 5 · Simon SaysOpen In the lesson

SwapReaction raceReaction raceOpen In the lesson

6Blue · Things That Move Open Band 6

Concept lab · 3 missionsThe signal, the shiver and the groundParts 4, 6 and 7 all happen inside wires you cannot see into. This lab lets you look.Open In the lesson

Part 5The knob drives the armBand 6 · Things That MoveOpen In the lesson

Part 7The servo on a batteryBand 6 · Things That MoveOpen In the lesson

Part 8The gateBand 6 · Things That MoveOpen In the lesson

SwapFan on a transistorA fan on a transistorOpen In the lesson

SwapStepper dialThe stepper dialOpen In the lesson

7Violet · Distance and Display Open Band 7

Concept lab · 3 missionsThe ping, the sum and the screenThis lab puts Parts 2 to 7 on one table. Watch the click leave the sensor, bounce off a book and come home, slowed right down so you can see it.Open In the lesson

Part 3The sensor aloneBand 7 · Distance and DisplayOpen In the lesson

Part 6aSensor and I2C screenBand 7 · Distance and DisplayOpen In the lesson

Part 6bThe bare 16-pin screenBand 7 · Distance and DisplayOpen In the lesson

Part 8Parking guard, I2C screenBand 7 · Distance and DisplayOpen In the lesson

SwapParking guard on a TM1637 displayThe guard on a four-digit displayOpen In the lesson

8Grey · Build for Nzemaland Open Band 8

Concept lab · 3 missionsRooms, arrows and a power cutThis lab draws Parts 2 to 9 as a map. Each state is a room, each arrow is the only way out of it, and a gold marker shows the room the device is in right now.Open In the lesson

Part 3The state machine demoBand 8 · Build for NzemalandOpen In the lesson

Part 8The water tank alarmBand 8 · Build for NzemalandOpen In the lesson

Part 10The documented exampleBand 8 · Build for NzemalandOpen In the lesson

+Bench pages and practice

BenchThe light, rebuilt to be measuredUsing a multimeterOpen In the lesson

BenchTwo LEDs in seriesSeries and parallelOpen In the lesson

BenchTwo LEDs in parallelSeries and parallelOpen In the lesson

BenchTwo LEDs sharing one resistorSeries and parallelOpen In the lesson

Nothing matches that. Try a part, such as “LED”, “button” or “servo”.

The labs are models, not your board: real parts can look a little different. They need a browser with WebGL (any recent Chrome, Edge, Firefox or Safari). Without it, the lessons teach exactly the same things with flat pictures.