Description

Send the circuit diagram, source program, and production materials, and leave a message after the shoot. The seller will send the information to your designated mailbox. Note: The price of TEA5767 radio chip is increased to RDA5807H.

Circuit board size: 7.7CMX6.1CM;

Shell size: 9.2CM X 7.4CM X 5.1CM

Working voltage: 4.5V-5.5V DC.

DC power supply is positive and negative inside, do not connect reversely;

Frequency modulation range: 87MHZ-108MHZ;

FM step: press once the step is 0.1MHZ, long press the FM key to continuously add and subtract;

Function: digital display frequency function, power-off memory function, power-saving function;

Power-off memory function: After turning off the power and powering on again, the radio station before the power-off is played.

Introduce the power-saving function: every time the power is turned on or the FM key is pressed, the digital tube displays the frequency for 5 seconds, and the digital tube display is automatically turned off after 5 seconds. There are two reasons for this design, 1 is power saving, 2 is the digital tube It will interfere with the sound when it is displayed, and the sound will be more beautiful when the digital tube display is turned off.

Purpose: Self-made digital radio, single-chip computer learning, electric cars and motorcycles, etc. to add radios.

DIY kit shipping list:

Component name Quantity

PCB 1

262 small antenna 1

0.56 inch 4 digits common anode digital tube 1

100UF 50V electrolytic capacitor 3

10UF 25V electrolytic capacitor 2

22P or 20pf ceramic capacitor 3

104 monolithic capacitor 4

8*8 self-locking switch 1

7MM high self-locking switch cap 1

DC005 Block 1

4.7 ohm resistor 1

10K resistor 11

220K resistor 1

9012 Transistor 5

12M crystal oscillator 1

RDA5807H radio module 1

6*6*20 button 2

2*5*7 LED 1

50K dial potentiometer 1

8P IC seat 1

40P IC seat 1

LM386 chip 2

STC89C52 (burn the program) 1

2 inch speaker 1

Red and black thread 1