DFplayer module is quite small and looks good for little project. The module read only audios in MP3 and WAV formats and all audio files must be placed under /mp3 folder. It’s required that files are named like 0001.mp3, 0002.mp3…..0255.mp3 (4 letters not 2 or 3 letters). The file names can have …
The IR signal is a series of IR light pulses which are modulate with a high frequency known as the carrier frequency. The carrier frequency used by most transmitters is 38 kHz. The IR receiver has a bandpass and filtered 38 kHz than demodulates the IR light signal, pre-amplifier and converts it …
Before I start, let’s of a quick review about the differences between DHT22 Temperature and Humidity sensor and DS18B20 Temperature sensor 1-Wire. (DHT22 vs. DS18B20) سنسور دما دیجیتال DS18B20, سنسور رطوبت و دما DHT22, دماسنج NTC DHT22 is a digital temperature and humidity sensor. DHT22 has a capacitive humidity and a …
Make a clock with DS1307 real clock module and 1602 16×2 LCD panel with back-panel to convert it to I2C protocol. (I2C راه اندازی با) The time and date will be displayed in alphanumeric on LCD. Device: LCD 1602 with back-panel (نمایشگر LCD 16×2 کاراکتری دو سیمی) The communication requires only two …
The DCF77 signal is a puls-signal with AM modulation with carrier frequency 77.5kHz. It has a small bandwidth. The carries include time and date information and will be transmitted in a simple binary-coded format by on-off modulation of the carriers. (100ms/200ms) The Signal time and date code include the following information: year, month, …
Making a ring wall clock with 1-meter long WS2812B LED strip with 60 RGB LEDs. (ماژول LED RGB WS2812) LED WS2812 حلقه یا RGB LED WS2812b پنج متری For clock I used a DS1307, which contains a real-time clock. Driver IC: I2C DS1307 Real Time Clock SCL Analog 5 (clock line) SDA: Analog 4 …
The LDR Sensor also know as the Photo-resistor is basically a simple sensor that its resistance value changes with light. (resistance will lower with more light.) The LDR isn’t very precise, so you can not get a LUX reading but it is good enough to tell the difference between light and shadow. It …