
Build and keep your own robot that sends a secret message one letter at a time!
You will learn the language of robots, computers, and electronics – Binary (ones and zeros), so you can create the special code needed to display your secret message. Binary can get very long with all those 0 & 1’s so you will also learn to convert binary to hexadecimal.
You will figure out how a seven-segment display works, and then wire it to a microprocessor and use it to build your robot!

| 7 Seg | Brain |
|---|---|
| A | 4 |
| B | 5 |
| C | 6 |
| D | 7 |
| E | 8 |
| F | 9 |
| G | 10 |
| H | 11 |


See the BlinkBlock to understand how to turn on and off LEDs
Use pin numbers 4-11

Use full screen to avoid accidentally dragging the segments around.
Clicking a segment will toggle it on and off.
Click the Start Flag to see a message one letter at a time.
See the script on the background to change the message.