Arduino project · Displays and counters · Easy
IR Remote to 7-Segment Digit
Press 0 to 9 on the remote and the same number shows on the digit.
What you will learn
- How to turn remote codes into numbers
- How a digit shows numbers
- How a chain of if-steps handles ten keys
How it works
One step per key. The digit keeps the last number until you press another key.
Try this next
- Use VOL+ and VOL- to count up and down.
- Add a buzzer click.
- Use two digits for two-digit numbers.
The simulator program and explanation on this page are original. The idea follows a classic Arduino project that students have built for years.
Parts: sensors and actuators (tap to show or hide)
Try the inputs (virtual sensors)
Pins (you can change them)
| Part | Arduino pin (change it here) | How to wire it |
|---|
Every wire, one by one
Red rail = 5 V from the Arduino 5V pin. Black rail = GND. The coloured wires carry signals. Match the wire colours on the drawing to this list.
| # | Colour | From (part and leg) | To |
|---|
Steps run from top to bottom, then start again. While the simulation runs, the active step is highlighted in green.
Quantities come from the parts you added. The store links open a search for that item on Robu.in, Amazon.in and ThinkRobotics, so you always see what is in stock today. Check the model, voltage and price before you order.
| # | Item | Qty | Search term | Buy / compare |
|---|
The PDF has the circuit sketch, pin table, every wire, sequence, full code, the parts list with store links, do’s and don’ts for each part, and the safety notes. The project file lets you come back and keep editing.
In the real world
A number display with a remote
Press a key on the keypad, remote or phone. The sign shows the number.
Tip: use the gold tab at the bottom of the circuit drawing to pull the real-world view up over the Arduino board. Your parts stay visible above it, so you can press a button and watch the real scene react.
- Keypad / remote / phone = the controller
- 7-segment display = the big sign