AN7223 LM7001 PLL FM Stereo Tuner, JQ8400 USB MP3, Bluetooth Audio Player - 16F690

Audio Player This is my new project, 3 in 1 audio player that design for my amplifier. It built in FM radio, USB player and Bluetooth module. Also include a simple mixer with op-amp. Bottom PCB Top PCB Side View For tuner section I used AN7223 and TA7343 and for PLL here I used LM7001 low cost IC. JQ8400 used for USB function and it controlled by a PIC16F690 microcontroller. U can use any Bluetooth audio module for this. I used MH-M18 Bluetooth...

Read More

JQ8400 MP3 Voice Module Microe C code

Previously I wrote a post about well-known voice module of DFPlayer Mini. Today I would like to write a post of advance chip, JQ8400. The main advantages of this chip are; Inquiry of the file name Inquiry of duration of the current audioInquiry of playback duration Fast backward Fast forward, etc. Jq8400 Module JQ8400 module is a SOC solution that combines a 16bit MCU with an ADSP specialized in audio decoding. By using hardware decoding method,...

Read More

OProg - Open Source USB Programmer - 18F2550

Recently I found a programmer from internet. This programmer is completely free and open source. It used few components and working well. I make some changes to it. You can find the original one from here. Prototype Advantages of this programmer are; Completely free and Open Source (including firmware) Programs PIC, dsPIC, ATMEL, EEPROM (I2C, SPI, MicroWire, OneWire, UNIO) Can work as ICD debugger USB 2.0 Full Speed interface Self-powered Doesn't...

Read More

7 Band Real Time Audio Spectrum Analyzer Circuit - 16F819 BA3834S

16F819 Audio Spectrum Analyzer This is the new version of my previous spectrum analyzer. Used PIC16F819 microcontroller and BA3834 Band-pass filter for spectrum analyzer. It has two versions, BA3834S and BA3834F. Here i used BA3834S. BA3834 are 7-band, band-pass filter ICs that use microprocessor time division to produce serial output for spectrum analyzer displays. To minimize the number of attached components required and enable compact and...

Read More

Uart Controlled DF Player Mikroc Code - 16F628A

  The DFPlayer Mini MP3 Player is a small and low cost MP3 module with an simplified output directly to the speaker. The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with a PIC, Arduino or any other with RX/TX capabilities. For this project, I would control the MP3 Player module with a microcontroller and RS232. DF Player   The DF Player module has all the features...

Read More