The 1×3 Push Button Module is a simple input device that combines three tactile switches on a single board. It allows users to give manual digital inputs (ON/OFF signals) to a microcontroller. Each button works independently, making the module suitable for menu navigation, mode selection, or basic control functions in embedded projects.
Pins Configuration
- VCC – Power supply (3.3V or 5V).
- GND – Ground.
- OUT1 – Digital signal from Button 1.
- OUT2 – Digital signal from Button 2.
- OUT3 – Digital signal from Button 3.
Key Features
- Three independent push buttons on a single module.
- Designed with clear labeling for Button 1, Button 2, Button 3.
- Each button typically connected with a pull-down/pull-up resistor (depending on design).
- Standard 4-pin/5-pin header for easy interfacing.
Applications
- Menu navigation (Up/Down/Select).
- Multi-option input control.
- Mode/Function selector in DIY electronics.
- Robotics control panels.
- Educational and prototyping projects.
Step 1: Hardware Required
- Glyph Boards
- 1×3 Push Button Module
Step 2: Circuit Diagram
Step 3: Code Setup
- Open Arduino IDE.
- Make sure to install the library
- Copy and paste the following code into the Arduino IDE:
// Define pins (each button shares the same pin as its LED)
int ledButton1 = 6;
int ledButton2 = 10;
int ledButton3 = 7;
void setup() {
Serial.begin(9600);
}
void loop() {
// --- Button 1 ---
pinMode(ledButton1, INPUT);
int state1 = digitalRead(ledButton1);
if (state1 == HIGH) {
Serial.println("Button 1 pressed → LED1 ON");
pinMode(ledButton1, OUTPUT);
digitalWrite(ledButton1, HIGH);
} else {
Serial.println("Button 1 not pressed → LED1 OFF");
pinMode(ledButton1, OUTPUT);
digitalWrite(ledButton1, LOW);
}
// --- Button 2 ---
pinMode(ledButton2, INPUT);
int state2 = digitalRead(ledButton2);
if (state2 == HIGH) {
Serial.println("Button 2 pressed → LED2 ON");
pinMode(ledButton2, OUTPUT);
digitalWrite(ledButton2, HIGH);
} else {
Serial.println("Button 2 not pressed → LED2 OFF");
pinMode(ledButton2, OUTPUT);
digitalWrite(ledButton2, LOW);
}
// --- Button 3 ---
pinMode(ledButton3, INPUT);
int state3 = digitalRead(ledButton3);
if (state3 == HIGH) {
Serial.println("Button 3 pressed → LED3 ON");
pinMode(ledButton3, OUTPUT);
digitalWrite(ledButton3, HIGH);
} else {
Serial.println("Button 3 not pressed → LED3 OFF");
pinMode(ledButton3, OUTPUT);
digitalWrite(ledButton3, LOW);
}
delay(100);
}
Step 4: Upload the Code
- Connect the Board
- Connect your GLYPH board to your computer
- Select the Board and Port
Do the following settings in your Arduino IDE,
Tools > Board > esp32 > Pcbcupid GLYPH C3
For the Pcbcupid Glyph C3 to appear under Tools > Board > esp32, the esp32 board version installed in the Arduino IDE should be greater or equal to 3.1.0.
Tools > Portand select the port connected to your GLYPH.Tools > USB CDC on Boot >Enabled
If USB CDC on BOOT is not enabled, you won't be seeing any serial data on Arduino IDE.
-
Upload the Code
- Click the upload button (➡️ icon) or use the shortcut
CRTL + Uin Arduino IDE to upload the code to the board.
- Click the upload button (➡️ icon) or use the shortcut
Step 5: Observe the Output
The 1×6 Key Array Module is a compact input device that integrates six tactile switches on a single board. Unlike individual digital buttons, this module uses a resistor network to generate distinct analog voltage levels for each key. When a button is pressed, the microcontroller reads a specific analog value, allowing it to identify which key was selected through a single analog input pin. This makes the module efficient for menu navigation, option selection, and multi-button control in embedded systems while minimizing the number of GPIO pins required.
Pins Configuration
- VCC Power supply (3.3V / 5V)
- GND Ground
- KEY (Analog Output) – Analog signal representing the pressed button
Key Features
- Six tactile switches on a single board
- Single analog output (KEY pin) for detecting all buttons
- Resistor ladder network design reduces GPIO usage
- Compatible with 3.3V and 5V microcontrollers
- Compact and easy-to-interface module
- Cost-effective solution for multi-button input systems
Applications
- Menu navigation systems
- Mode selection in embedded devices
- Human–Machine Interface (HMI) controls
- IoT device configuration panels
- DIY electronics and prototyping projects
- Educational learning kits for ADC-based input handling
Step 1: Hardware Required
- Glyph Boards
- 1×6 Push Button Module
Step 2: Circuit Diagram
Step 3: Code Setup
- Open Arduino IDE.
- Make sure to install the library
- Copy and paste the following code into the Arduino IDE:
#define KEY_PIN A2 // Analog pin
void setup() {
Serial.begin(115200);
}
// Detect button from ADC value
int getButtonFromAnalog(int val) {
if (val > 4000) return -1; // No button pressed
else if (val < 200) return 1; // K1 (around 20)
else if (val < 2700) return 2; // K2 (around 2269)
else if (val < 3200) return 3; // K3 (around 3034)
else if (val < 3600) return 4; // K4 (around 3440)
else if (val < 3800) return 5; // K5 (around 3704)
else return 6; // K6 (around 3880)
}
void loop() {
int analogValue = analogRead(KEY_PIN);
int button = getButtonFromAnalog(analogValue);
if (button != -1) {
Serial.print("Button ");
Serial.print(button);
Serial.println(" pressed");
delay(300); // debounce
}
}
Step 4: Upload the Code
- Connect the Board
- Connect your GLYPH board to your computer
- Select the Board and Port
Do the following settings in your Arduino IDE,
Tools > Board > esp32 > Pcbcupid GLYPH C3
For the Pcbcupid Glyph C3 to appear under Tools > Board > esp32, the esp32 board version installed in the Arduino IDE should be greater or equal to 3.1.0.
Tools > Portand select the port connected to your GLYPH.Tools > USB CDC on Boot >Enabled
If USB CDC on BOOT is not enabled, you won't be seeing any serial data on Arduino IDE.
-
Upload the Code
- Click the upload button (➡️ icon) or use the shortcut
CRTL + Uin Arduino IDE to upload the code to the board.
- Click the upload button (➡️ icon) or use the shortcut