PT2314 Arduino Spectrum Analyzer LCD , Encoder, Remote Control

| 2022/11/17

The PT2314 is a sound processor with a 4-channel stereo input selector, adjustable gain, volume control, frequency loudness compensation and tone control. I implemented the Arduino nano PT2314 project, it works pretty well. 2X20 LCD (LCD2004) is used for the display. 2 buttons are used for input selection mute, standby mode. Menu transitions and other…

CH341A 95640 Eeprom, New Chips and RCD300 Radio Code

| 2022/11/17

The Volkswagen RCD300 tape was in safe 2 mode. To learn the password, 95640 eeprom had to be read and the RCD300 password had to be obtained via the PC program, it took some effort, but I took the password and started the tape. CH341A EEprom Flash Programmer was used to read 95640 eeprom on…

SPI Flash Memory Audio File Write and Playback PIC16F628A 25Q32

| 2022/11/17

Flash IC is an audio file playback circuit prepared for high-capacity spi flash memory ICs, known as Bios ICs. The controller of the system is the PIC16F628 microcontroller, the spi flash integrated 25Q64 used for memory was removed from an old computer motherboard. I made the circuit application with 25Q32BV, I removed these integrated from…

DS3231 CR2032 Battery Problem and Solution

| 2022/11/17

@ETE Teacher talked about the CR2032 Battery problem of the DS3231 Module in the forum, and the DS3231 module is used in the “Arduino PT2314 LCD, Spectrum Analyzer, Remote Control, Encoder” project, I used a CR2032 battery for the module, but when we use this battery, the battery life is between 1….3 years, normally the…

PT2322 PT2323 Arduino 5.1 Digital Audio Control Circuit

| 2022/10/27

5.1 Control board project for sound system. Remote control, LCD, Encoder. I have almost no application with Arduino, I always tried to use Arduino alternatives and somehow found circuit solutions. But audio applications always intrigue me. I applied the digital volume control Arduino project made with Arduino Nano PT2323 and PT2322 audio control ICs, the…

5 Channel RF Remote Control Relay Switch 12V

| 2022/10/27

5 Channel RF relay control circuit 433mhz RF module set based on PIC12F675 microcontroller IC can be used (I used 434mhz module set, no problem) Depending on the RF module quality and the antenna used, it can remotely control the relay between long distances and can be used for turning on and off various devices…

2X38V 250W IR2156 Amplifier Power Supply SMPS

| 2022/10/27

An SMPS switched power supply project for power amplifiers with the IR2156 half-bridge mosfet driver IC from International Rectifier (currently acquired by Infineon Technologies). Brief information about IR 2156. The IR2156 is a half-bridge half-bridge converter controller with a built-in high voltage driver and a programmable oscillator. It was designed by the manufacturer as a…

Electronic Combination Lock Circuit

| 2022/10/07

Electronic combination lock circuit or Combination door automatic LCD, LED Display etc. It is simpler and easier to implement than systems with indicators. User password can be changed with administrator password. The heart of the combination lock circuit is the PIC12F675 microcontroller. For password entry, button or old telephone keypad is used, but I designed…

Open Door Warning Circuit With Talk + .Wav Hex Converter

| 2022/10/07

The speech module made with PIC12F675 24C512 Eeprom and LM386 integrated used to strengthen the voice signal, the voice warning circuit is set up with very little passive material. Warning, security, etc. can be used in projects. Its most common use is an electronic voice alert system to remember the “open door” or any action.…

BMS 3S 25A Circuit Diagram and Modified

| 2022/10/07

BMS 3S 25A is frequently used especially for Li-ion battery conversion of cordless drills. Its prominent features are balanced charging, over-current, short-circuit protection, allowing instantaneous 34-40A current flow, which is very good for high-power applications, and the PCB size is very small and the mosfets are cooled over the PCB. (although a heatsink may be…