Blocks Area
InOut
🔌 In/Out – Your Digital “Senses and Limbs”
What it is: The blocks that allow the robot to receive information (input) and give commands (output).
What it does: Connects the physical world with your code.
Example: A button that sends a signal (input) and an LED that lights up (output).
👉 Think of this as the robot’s eyes and hands.
🧩 Fun Guide to In/Out Blocks (Clu-blocks Pro)
⚠️ Important! Always use the setup blocks first before trying to read or write to a pin. If you skip setup, your robot won’t know what to do — and nothing will work!
| # | Block | What it does | Dropdown options | What the options mean |
|---|---|---|---|---|
| 1 | HIGH |
Sets a digital signal to ON | HIGH, LOW |
HIGH = ON (power), LOW = OFF (no power) |
| 2 | setup pin# as Digital Output pin# 2 |
Prepares pin 2 to send signals | Digital Output, Digital Input, PULLUP, pull down input |
– Digital Output: send signals (e.g. turn on LED) – Digital Input: receive signals (e.g. read button) – PULLUP / pull down: stabilize button readings |
| 3 | Digital Output pin# 2 Stat HIGH |
Sends a signal to pin 2 (e.g. turn on LED) | HIGH, LOW |
Choose if the pin should be ON (HIGH) or OFF (LOW) |
| 4 | get Digital Input pin# 2 value |
Reads if pin 2 is ON or OFF | — | Useful for checking if a button is pressed |
| 5 | Analog Input pinAO Ref VoltageStat 3.3V |
Sets the voltage reference for analog readings | 3.3V, 2.2V, 1.5V, 1.2V |
Choose the base voltage for better sensor accuracy |
| 6 | Analog Input pinAO Ref ResolutionStat 3.3V |
Sets the resolution for analog readings | 3.3V, 2.2V, 1.5V, 1.2V |
Controls how detailed the sensor reading is |
| 7 | get Analog Input pinAO value |
Reads the analog value from pin A0 | — | Great for sensors like light, temperature, or sliders |
| 8 | setup PWMAnalog pin# as PWMAnalog Output pin# 2 |
Prepares pin 2 to send PWM signals | — | Needed for controlling brightness or motor speed |
| 9 | PWMAnalog Output pin# 2 frequencyStat 2000 |
Sets the speed of PWM pulses on pin 2 | Number (e.g. 2000 Hz) | Controls how fast the signal pulses — affects smoothness |
| 10 | get Touch Sensor pin# AO value |
Checks if the touch sensor on pin A0 is touched | — | Great for invisible buttons or touch-sensitive controls |
| 11 | attachInterrupt pin# 2 mode RISING do attachInterrupt_func |
Sets up a reaction when pin 2 changes | RISING, FALLING, CHANGE |
– RISING: when signal goes from OFF to ON – FALLING: when signal goes from ON to OFF – CHANGE: any change |
| 12 | pass |
Does nothing (placeholder block) | — | Used when you want to leave a function empty for now |
| 13 | setup dac# as DACAnalog Output dac# 2 |
Prepares DAC pin 2 to send smooth analog signals | Number (2, 3) | Needed for real analog output (not just ON/OFF) |
| 14 | DACAnalog Output dac# 2 value 2 |
Sends a smooth analog value to DAC pin 2 | Number (2, 3) | Controls intensity or level (e.g. soft light, quiet sound) |
🧠 Quick Tips for Students
- Setup first, always! If you don’t tell the robot what the pin is for, it won’t work.
- Dropdowns are your friends. They let you change how the block behaves — just click and choose.
- Digital = ON/OFF, Analog = smooth values, PWM = fast pulses, Interrupts = instant reactions.
Let me know when you’re ready to send the next image — and I’ll build the same kind of guide for that category!
