DIY LCD digital FM radio production welding RDA5807 FM 87-108MHZ W/ Flashing LED Light LCD Display Radio Making Welding Parts Features: * new and high quality *Made of high quality material, strong and durable *Adopts DC5V working voltage, easy to draw power, supports computer USB power supply and mobile phone power bank *The radio features digital channel adjustment and quantitative volume control. *Searching for radio stations and adjusting the volume are more convenient. In addition to the basic functions of the radio, it is also equipped with 10 LED lights. When you listen to the radio, these LED lights will randomly flash different colors and jump with the sound of the radio, making your DIY radio unique *It is equipped with a high-definition LCD display. After assembly is completed, you can freely adjust the frequency and volume you want to listen to through the buttons below the radio *This is a radio electronics soldering kit that allows electronics enthusiasts and beginners to perfectly learn soldering skills and abilities while getting a practical radio *The main control chip is composed of STC89C52 chip and 5807 core device. The master device and the slave device are connected through the I2C bus. The software simulation bus timing method is used to drive the 5807 chip to work. This program implements automatic channel search function, the frequency reception range is 87-108MHZ, and displays the frequency information in real time through the LCD 1602 LCD screen. The output audio signal is amplified by the power chip LM386 and then drives the speaker to work. *The receiving sensitivity and sound quality are very good, and the anti-noise interference ability is strong, which effectively reduces the noise interference when listening to the radio. The sound becomes clearer under the influence of the power chip. *With the level indicator, listening to the radio becomes a full enjoyment. Specification: *Name: FM Radio Kit *Model: Kit, Kit+Case *Power supply: DC power supply 5V internal positive and external negative *FM range: 87MHZ-108MHZ *Operating voltage: 4.5V-5.5V DC level indicator introduction: *There are 10 level indicators in total, using seven-color fog light slow-flash LEDs. The lights come on according to the volume. The louder the volume, the more lights light up from the center to the sides. At the same time, the color of the light will change on its own. The fog is dreamy and beautiful. Instructions: *Press the left button to power on/off. *Press the right button to turn on/off the spectrum indicator. *Press "S+" or "S-" to adjust the volume. *Press P+ or P- to adjust the receiving frequency and FM station. *Note: The finished shell is not assembled and needs to be assembled by the customer. Package Included: 1*radio kit or 1*radio kit 1*shell Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement.