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Covers 87.0MHz-108.0MHz FM receiving frequency band.
Supports volume adjustment via buttons and potentiometer, with 15 levels.
Provides 0.5W amplifier output for speakers and AUX output for headsets.
Features a 4-bit digital tube for real-time frequency display and dual power supply.
A DIY kit requiring manual component installation to develop soldering skills.
Specifies the product name as HU-017ASW RDA5807 87-108MHz FM Radio DIY Kit.
The device operates on DC 3V or 5V.
Features 8ohm impedance, 0.5W output power, and mono channel audio.
Covers the FM receiving band from 87.0MHz to 108.0MHz with 0.1MHz accuracy.
Operates between -40℃~85℃ and 5%~95% RH.
The installed size of the device is 107*70*23mm.
Use the toggle switch to turn the work power supply ON/OFF.
Adjust volume using V+ or V- buttons for 15 levels.
Tune frequency or FM station using F+ or F- buttons.
Adjust volume using a screwdriver with the potentiometer.
Prepare soldering iron, solder, cutters, and screwdriver before starting assembly.
Avoid prolonged contact with soldering iron to prevent component damage.
Pay attention to component polarity and use anti-static precautions.
Install complex components first, ensure correct placement, and avoid short circuits.
Strongly recommended to read the installation manual before starting assembly.
Steps 1-6 cover installing SMD components like registers, converters, and receivers.
Steps 7-9 detail installing 510ohm, 1Kohm, and 10Kohm metal film resistors.
Steps 10-16 cover installing USB sockets, IC sockets, LED, capacitors, AUX socket, and toggle switch.
Steps 17-20 cover installing transistors, digital tube, and electrolytic capacitors.
Steps 21-24 cover installing potentiometers, buttons, MCU, and amplifier ICs.
Steps 25-28 cover connecting the speaker, antenna, and battery box.
Steps 31-34 cover preparing and assembling the acrylic enclosure.
Step 35 covers connecting to power supply and enjoying the finished product.
The ICStation RDA5807 87-108MHz FM Radio DIY Kit is an engaging electronic product designed for enthusiasts to build their own FM radio receiver. This kit offers a hands-on experience in understanding electronic circuits and developing soldering skills, making it ideal for hobbyists, beginners, and educational purposes in schools and homes.
At its core, the device functions as an FM radio receiver, capable of tuning into frequencies within the global 87.0MHz to 108.0MHz FM band. This broad frequency range ensures compatibility with FM broadcasts in various countries and regions worldwide. The radio utilizes an RDA5807 FM data processor, which is central to its receiving capabilities.
The kit provides two distinct methods for adjusting the volume: through dedicated buttons and via a potentiometer. This dual control system offers flexibility, allowing users to choose their preferred method for setting the audio level across 15 available volume levels.
Beyond its receiving function, the device offers versatile audio output options. It features a built-in 0.5W power amplifier, enabling it to directly drive an 8-ohm speaker for shared listening experiences. Additionally, it provides an AUX interface for outputting audio signals to headphones or external loudspeakers, catering to personal listening preferences. This combination of active and passive audio output ensures that users can enjoy FM audio in various settings, whether alone or with others.
For real-time feedback, the radio incorporates a 4-bit red digital tube display, which clearly shows the current FM radio frequency. This visual indicator enhances the user experience by providing immediate information about the tuned station. The internal circuit board is protected by a transparent acrylic shell, which not only safeguards the components but also allows users to observe the intricate circuitry, further aiding in their understanding of electronics.
The device is designed with dual power supply methods, offering flexibility for both indoor and outdoor use. It can be powered via a 5V USB connection or by a 3V battery, making it adaptable to different environments and power availability.
Operating the ICStation RDA5807 FM Radio is straightforward, with several user-friendly features. To begin, a toggle switch is used to turn the power supply ON or OFF, providing a simple and direct control for activating the device.
Volume adjustment can be performed using either the V+ and V- buttons or a potentiometer. Pressing the V+ or V- buttons allows for incremental volume changes across 15 levels. For continuous adjustment, users can hold down the respective volume button. The potentiometer offers an alternative method for volume control, which can be adjusted using a screwdriver, providing a more precise or set-and-forget option.
Tuning into FM stations or adjusting the receive frequency is managed by the F+ and F- buttons. Similar to volume control, pressing these buttons allows for incremental frequency changes. Holding down either button enables continuous frequency adjustment, facilitating quick scanning through the FM band to find desired stations.
The radio comes with a 25cm dedicated FM antenna, which is crucial for optimal signal reception. This antenna is designed to enhance the radio's ability to pick up FM broadcasts effectively.
As a DIY kit, a significant aspect of its "maintenance" involves the initial assembly and soldering process. The kit is supplied with various components that users must install by hand, which serves as a practical exercise in improving soldering skills and fostering an interest in electronic technology. This hands-on assembly is a core part of the product's design, intended to educate and engage users.
The installation process is guided by detailed instructions, including tips for proper soldering and component placement. Users are advised to prepare essential welding tools such as a soldering iron (under 50 Watt), rosin core solder, wire cutters, wire strippers, and a Philips screwdriver. Patience is emphasized throughout the installation, as the kit requires careful assembly.
Specific installation steps are provided for each component, ensuring correct orientation and placement. For SMD components like the 74HC595D Register FM Receiver and AMS1117-3.3V Voltage Converter, users are guided on how to align the components with corresponding marks on the PCB silk screen. Techniques for soldering, including melting tin on pads, holding ICs with tweezers, and removing excess solder with a solder sucker or desoldering braid, are detailed to ensure a clean and functional build.
Attention to detail is critical during assembly, particularly regarding the positive and negative terminals of components, to prevent short circuits and ensure proper functionality. Complex components are recommended to be installed preferentially, and all components must be in the correct direction and place. The manual strongly advises reading the entire installation guide before starting and wearing anti-static gloves or wristbands when handling electronic components to prevent damage.
Once assembled, the transparent acrylic shell provides protection for the internal circuit board, minimizing exposure to dust and physical damage. While the device is a wireless module, users are cautioned against using it in environments with significant signal interference to maintain optimal performance. It is also noted that the radio station and volume need to be readjusted each time the power is turned on, and the display screen remains ON continuously after power activation.
The design also considers the power supply, recommending against connecting both USB power and AA battery power simultaneously to avoid potential issues. The speaker and battery box are designed to be secured to the PCB back with double-sided adhesive tape, with specific white line areas on the PCB indicating their defined positions. Nylon column screws, M3 screws, and M2 screws and nuts are used to fix various parts, including the acrylic boards and the FM radio antenna, ensuring a sturdy and durable final product. The FM radio antenna, once fixed, requires a large amount of solder tin to cover the screw and nut, preventing it from falling off during use.
General| Chip | RDA5807M |
|---|---|
| I2C Interface | Yes |
| Type | Radio Module |
| Frequency Range | 76MHz ~ 108MHz |
| Dimensions | 30mm x 15mm x 5mm |
| Weight | 5g |
