To operate the security system, download an Arduino bluetooth ... for changes in the sound, light, and distance measurements. If a change is detected, the sound module emits a beep for half a second ...

The KY-038 sound sensor ... OLED display. The LEDs are connected to the GPIO pins of the ESP32 and the OLED module is connected to the I2C pins of the ESP32 device. Learn more about interfacing OLED ...

Looking for a digital recreation of the classic analog volume unit (VU) meter? If you’ve got an Arduino, a few passive components, and a SSD1306 OLED, then [mircemk] might have the answer for you.

Presented here is an Arduino-based noise/sound level monitor that displays sound levels in ... It is built around Arduino Uno board, 9V battery, 16×2 alphanumeric LCD (JHD162A), sound sensor module ...

// 128x64 SSD1306 OLED Display: https://s.click.aliexpress.com/e/_DCYdWXb // 128x64 SSD1306 OLED Display (smaller): https://s.click.aliexpress.com/e/_DCKdvnh ...

Featuring a high resolution OLED display, ambient light sensor and illuminated silicon ... said “The Pulsar Nova sound level meters can be upgraded further with a range of optional modules at the time ...