A BLE remote control board based on SoC ESP32-C3-MINI-1 that allows you to program as HID volume multichannel control, you can switch channels with the user button, or arrow keys.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down.

Push button once to ON, Push button Hold to OFF.

BLE remote control board. Based on SoC ESP32-C3-MINI-1 that allows you to program it as HID volume multichannel control, you can switch channels with the user button, or use it as arrow keys.

Important Note: You must connect your own SPI/ICSP programming header if you want to burn the Arduino bootloader to the MCU. SMD Manufacturing: Need a hotplate and solderpaste Good to haves: - Oscillator Decoupling Caps Expose UART via connector Programming Button Onboard LED Reset Button You don't have to populate everything! Only these are mandatory: Reset Button Find the reference schematic here: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf

Arduino Micro - MIDI Controller It uses the Arduino Micro as USB midi controller. It has 1 capacitive touch octave (12 Keys), 2 rotary encoders, a button, and a proximity sensor that can be used as a mod wheel, sustain pedal or MPE. The oled screen displays the different configuration options. It can be set to any channel or C.C. so it can be used to modify other instruments behavior. The capacitive touch keys can also be used as 12 drum machine pads.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down.

This project is a Bluetooth Low Energy (BLE) gas leakage detection system. It uses a BME680 sensor from Bosch Sensortec for gas detection and a BMD-330-A-R module from U-blox for BLE communication. It also features a user interaction button, RGB signaling LED, and is powered by two non-rechargeable AA batteries. #BLE #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #ublox #template #reference-design

This is a reference design WiFi remote control utilizing an ESP32-PICO. It includes a battery circuit, a buzzer, and multiple control buttons for inputs. #referenceDesign #simple-embedded #espressif #project #button #esp #template #reference-design

use code and design skemetics > #include <Stepper.h> #define STEPS_PER_REVOLUTION 200 // Steps per revolution of your stepper motor #define MICROSTEPS_PER_STEP 8 // Microsteps per step of the stepper driver (DMA860H supports up to 256 microsteps) #define STEPPER_PIN1 12 // Stepper motor driver pulse pin #define STEPPER_PIN2 13 // Stepper motor driver direction pin #define STATUS_BUTTON_PIN 2 // Pin connected to status button #define EMERGENCY_BUTTON_PIN 3 // Pin connected to emergency stop button #define HOME_BUTTON_PIN 4 // Pin connected to home button // Define states for button handling enum ButtonState { Idle, Pressed, Debouncing }; ButtonState statusButtonState = Idle; ButtonState emergencyButtonState = Idle; ButtonState homeButtonState = Idle; // Create a Stepper object with 200 steps per revolution and connect to appropriate pins Stepper stepper(STEPS_PER_REVOLUTION * MICROSTEPS_PER_STEP, STEPPER_PIN1, STEPPER_PIN2); void setup() { Serial.begin(9600); stepper.setSpeed(100); // Set the speed of the stepper motor (steps per second) // Initialize button pins pinMode(STATUS_BUTTON_PIN, INPUT_PULLUP); pinMode(EMERGENCY_BUTTON_PIN, INPUT_PULLUP); pinMode(HOME_BUTTON_PIN, INPUT_PULLUP); // Attach interrupts to buttons attachInterrupt(digitalPinToInterrupt(STATUS_BUTTON_PIN), statusButtonISR, FALLING); attachInterrupt(digitalPinToInterrupt(EMERGENCY_BUTTON_PIN), emergencyButtonISR, FALLING); attachInterrupt(digitalPinToInterrupt(HOME_BUTTON_PIN), homeButtonISR, FALLING); } void loop() { // Handle button states handleButtonState(statusButtonState, statusButtonPressed); handleButtonState(emergencyButtonState, emergencyButtonPressed); handleButtonState(homeButtonState, homeButtonPressed); // Your main code here } // ISR for status button void statusButtonISR() { statusButtonPressed = true; } // ISR for emergency stop button void emergencyButtonISR() { emergencyButtonPressed = true; } // ISR for home button void homeButtonISR() { homeButtonPressed = true; } // Function to handle button state transitions void handleButtonState(ButtonState &state, bool &pressed) { switch (state) { case Idle: if (pressed) { state = Debouncing; delay(50); // Debouncing delay } break; case Debouncing: if (!pressed) { state = Idle; } else { state = Pressed; } break; case Pressed: // Perform actions here when the button is pressed if (state == statusButtonState) { Serial.println("Status button pressed."); // Perform status-related actions here } else if (state == emergencyButtonState) { Serial.println("Emergency stop button pressed."); // Perform emergency stop actions here } else if (state == homeButtonState) { Serial.println("Home button pressed."); // Perform homing actions here } state = Idle; break; } pressed = false; }

Arduino Micro - MIDI Controller It uses the Arduino Micro as USB midi controller. It has 1 capacitive touch octave (12 Keys), 2 rotary encoders, a button, and a proximity sensor that can be used as a mod wheel, sustain pedal or MPE. The oled screen displays the different configuration options. It can be set to any channel or C.C. so it can be used to modify other instruments behavior. The capacitive touch keys can also be used as 12 drum machine pads.

Battery-powered minimal ST-4 dither timer for iOptron HEM27EC: two AAA cells, ATtiny1616 controller, opto-isolated RA+/RA-/DEC+/DEC- contact closures, physical interval/intensity selectors, DITHER NOW button, and low-power status LED. The previous ESP32-S3 USB-host design is preserved only as a conditional V2 archive.

WeMos D1 Mini: LiPo Battery, OLED Display, and Debounced Button System (Final Schematic & Ready for Production)

Production-oriented 2-layer PCB for a desktop mini CRT-style collectible using an ESP32-C3 Mini module, USB-C LiPo charging, ST7789 TFT display, 3 Hall sensors, eject button, piezo buzzer, and battery monitoring.

Production-oriented 2-layer PCB for a desktop mini CRT-style collectible using an ESP32-C3 Mini module, USB-C LiPo charging, ST7789 TFT display, 3 Hall sensors, eject button, piezo buzzer, and battery monitoring.

USB-C powered football-pitch PCB badge with Mexico 4-3-3 and South Africa 4-2-3-1 LED formations, kickoff button, and goal animation concept.

Modular horizontal strip PCB for a wall calendar matrix: 3 month rows by 31 day columns, with 93 WS2812B/SK6812-style RGB LED cells, 93 SMD tactile switches, anti-ghosting diodes, and dual I2C GPIO expanders for button matrix scanning.

Breadboard-only schematic for an ESP32-based LC electromagnetic response visualizer using a handmade coil oscillator, LM339 comparator, GPIO27 frequency input, SSD1306 I2C OLED, and calibration button. No PCB layout is included.

Cyberdeck power distribution hub using a TP4056 Type-C Li-ion charger module, MT3608 boost converter module, switched output rail, voltmeter, servo, Arduino VIN, button signal header, and battery terminal on a 50 mm × 70 mm PCB.

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Cortex v0 tiny AI wearable schematic: Raytac MDBT53V-1M BLE/nRF5340 module, USB-C LiPo charging, TPS63020 3.3V buck-boost, dual microphones, QSPI flash, tactile button, and WS2812B LED on a ~30mm round 4-layer PCB.

ESP32-based automatic Normal Saline Solution warmer with dual DS18B20 temperature sensing, ILI9341 TFT display, relay-controlled 12V heater output, buzzer/LED alerts, push button input, and segregated high-current PCB layout for thesis prototyping.

Compact wearable necklace PCB for 5-second audio capture. A button press starts recording with an audible beep, and button release/end of the 5-second window produces a second beep. The design targets low-power LiPo operation, safe charging, small necklace-friendly form factor, accessible programming/debug, and production-ready ERC/DRC-clean PCB layout.

MagicGlow smart key tray annular PCB with dual WS2812B rings, ESP32-C6 control, HX711 load-cell interface, USB-C power/UART access, buzzer, and button.

ESP32 DevKitC-32 Carrier PCB (No Grove, No Battery LED Bargraph, No Button)