PU2CLR AKC695X Arduino Library

This library facilitates control over the AKC6955 / M6955 DSP radio devices using Arduino.

The development was primarily based on the AKC6955 stereo FM / TV / MW / SW / LW digital tuning radio documentation provided by AKC technology. Additionally, various other sources assisted the author in crafting this library. More information about these can be found in the References section.

Intended to be compatible with all AKC695X family members featuring an I²C bus interface, this library accommodates the unique features inherent to each IC variant. It's imperative to review the device's datasheet before initiating your project.

Furthermore, distribution of this library is permitted under the MIT Free Software license.

Copyright (c) 2020 Ricardo Lima Caratti.

Contact: pu2clr@gmail.com.

Donate

If you find this project useful, consider making a donation so that the author of this library can purchase components and modules for improvements and testing of this library. Click here to donate.

About Me

I hold a Master's degree in Educational Technology from the Federal University of Ceará, where I delved into the ways technology can enhance learning experiences. My passion for computer science led me to specialize in it, focusing on Distributed Systems Development with an Object-Oriented approach, at the University of Brasília. My academic journey began with a Bachelor's degree in Information Systems from the União Pioneira de Integração Social (UPIS-Brasília). Outside the classroom, my main hobbies are electronics and Amateur Radio.

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Contents

1. Preface
2. Your support is important
3. Library Features
4. MIT License
5. Library Installation
6. About AKC695X / M695X DSP radio
   1. Register setup
   2. Register operations
   3. AKC695X Pin definitions
7. SCHEMATIC
8. API Documentation
9. Source code - Arduino sketch examples
10. Videos
11. References
12. Commercial receivers based on AKC6955

Preface

AKC695X device family offer versatile FM/MW/SW/LW receiver solution by reducing the external components usually found in regular receivers. This device family will surprise hobbyists and experimenters with its simplicity to build FM and AM (LW, MW, SW) receivers.

There are currently some receivers based on DSP technology. The KT0915 and SI4735 devices are some examples widely disseminated in the market. This library was developed with the purpose of expanding the alternatives to hobbyists and radio listeners.

In this document you will see Arduino source codes, schematics, examples and tips to help you to build a receiver based on Arduino board and AKC695X devices. The project and examples shown here do not intend to be a real receiver for exigent listener. However, it is possible to start with it and after add some improvements. On the other hand, with the simple circuits shown here, the experimenter may be surprised with the AKC695X performance.

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See also

• PU2CLR Si4735 Library for Arduino. This library was built based on “Si47XX PROGRAMMING GUIDE; AN332” and it has support to FM, AM and SSB modes (LW, MW and SW). It also can be used on all members of the SI47XX family respecting, of course, the features available for each IC version;
• PU2CLR SI4844 Arduino Library. This is an Arduino library for the SI4844, BROADCAST ANALOG TUNING DIGITAL * DISPLAY AM/FM/SW RADIO RECEIVER, IC from Silicon Labs. It is available on Arduino IDE. This library is intended to provide an easier interface for controlling the SI4844.
• PU2CLR AKC695X Arduino Library. The AKC695X is a family of IC DSP receiver from AKC technology. The AKC6955 and AKC6959sx support AM and FM modes. On AM mode the AKC6955 and AKC6959sx work on LW, MW and SW. On FM mode they work from 64MHz to 222MHz.
• PU2CLR KT0915 Arduino Library. The KT0915 is a full band AM (LW, MW and SW) and FM DSP receiver that can provide you a easy way to build a high quality radio with low cost.
• PU2CLR BK108X. The BK1086 and BK1088 are DSP receivers from BAKEN. The BK1088 is a BROADCAST FM and AM (LW, MW and ) RECEIVER and BK1086 is a subset of the BK1088 (it does not have LW and SW acording to the Datasheet).
• PU2CLR RDA5807 Arduino Library. The RDA5807 is a FM DSP integrated circuit receiver (50 to 115MHz) with low noise amplifier support. This device requires very few external components if compared with other similar devices. It also supports RDS/RBDS functionalities, direct auto gain control (AGC) and real time adaptive noise cancellation function.
• PU2CLR SI470X Arduino Library. It is a Silicon Labs device family that integrates the complete functionalities for FM receivers, including RDS (Si4703).
• PU2CLR MCP23008. It is an Arduino Library to control the MCP23008/MCP23S08 8-Bit I/O Expander. The MCP23008 device provides 8-bit, general purpose, parallel I/O expansion. It can be controlled via I2C bus applications. It is a great and inexpensive device that allow you to add more devices to be controlled by your Arduino board via I2C protocol.
• PU2CLR - PCF8574 Arduino Library. It is an Arduino Library to control the PCF8574 8-Bit I/O Expander. The PCF8574 device provides 8-bit, general purpose, parallel I/O expansion. It can be controlled via I²C bus applications. It is a great and inexpensive device that allow you to add more peripherals to be controlled by your Arduino board via I²C protocol.
• QN8066 FM DSP RX/TX Arduino Library. An easy-to-use interface for controlling the QN8066 FM transceiver and receiver.

More Arduino Projects developed by author

• Multipurpose signal generator with SI5351. It is a multipurpose signal generator controlled by Arduino. This project uses the SI5351 from Silicon Labs. The Arduino sketch is configured to control the SI5351 with three channels from 32.768kHz to 160MHz and steps from 1Hz to 1MHz.
• Shortwave Arduino Transmitter. This project is about a shortwave transmitter from 3 MHz to 30 MHz. It uses the SI5351 oscillator from Silicon Labs controlled by Arduino. Also, you can use it with a crystal oscillator. In this case, you will not need the SI5351 device and Arduino.
• Android and iOS Bluetooth Remote Control for PU2CLR Arduino Library DSP receivers. This project is an extension of the Arduino library projects for: SI4735; AKC6959 and KT0915. It is a simple example that shows a way to use your smartphone as a remote control via Bluetooth. In order to follow the steps presented here, I am assuming that you have some knowledge in development for mobile devices. Also, you will need to be familiar with the Javascript programming language. The development environment used by this project is the Apache Cordova. Cordova is a open-source mobile development framework that allows you to develop cross-platform applications. That means you can code once and deploy the application in many system, including iOS and Android. Cordova provides an easy way to develop for iOS and Android.
• Band Pass Filter controlled by Arduino. It is a HF band pass filter controlled by Arduino. It is designed for HF receivers. With this project, you can use a set of up to four HF bandpass filters that can be selected by Arduino. To do that you will need just two digital Arduino pins.

Your support is important

If you would like to support this library development, consider joining this project via Github. Alternatively, make suggestions on new features and report errors if you find them. Thank you!

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Library Features

This library uses the I²C communication protocol and implements most of the functions offered by the AKC695X (BROADCAST AM / FM / SW / LW RADIO RECEIVER).

The main features of this library are listed below.

1. Open Source. It is free. You can use, copy, modify, merge