1. Introduction
The IS FM Radio Kit is a comprehensive DIY soldering project designed for electronics enthusiasts and those looking to enhance their soldering skills. This kit allows you to build a fully functional FM radio with unique features like LED flashing lights and a clear LCD display. It's an excellent educational tool for STEM learning, providing practical experience in circuit assembly and understanding electronic principles.
Upon successful assembly, you will have a portable FM radio capable of receiving frequencies from 76-108MHz, complete with a headphone jack for private listening and a power-off memory function to retain your last tuned station.
Figure 1: Fully assembled FM Radio Kit.
2. What's in the Box
Your FM Radio Kit includes all the necessary components for assembly. Please verify that all items listed below are present before beginning the assembly process.
- Circuit Board (PCB)
- Speaker
- Telescopic Antenna
- LCD Display Module
- Various Electronic Components (Resistors, Capacitors, Diodes, Integrated Circuits, LEDs)
- Buttons and Switches
- Headphone Jack
- USB Power Cable
- Acrylic Casing Panels
- Screws and Standoffs for Casing Assembly
Figure 2: Contents of the FM Radio Kit packaging.
3. Setup and Assembly
This kit requires soldering. Basic soldering tools (soldering iron, solder, desoldering wick/pump, wire cutters, safety glasses) are necessary and not included. It is recommended for beginners to intermediate users. Pay close attention to component polarity and placement.
For detailed, step-by-step assembly instructions, please refer to the official user manual PDF available online. A QR code linking to these instructions is typically provided with the kit.
Download Official User Manual (PDF) for Detailed Assembly Steps
3.1 Soldering Components
Begin by soldering the smaller components, including any Surface Mount Devices (SMD) if present, before moving to larger through-hole components. Ensure correct orientation for polarized components like LEDs and capacitors. The circuit board is clearly marked for component placement.
Figure 3: Soldering is required for assembly.
3.2 Assembling the Acrylic Casing
Once all electronic components are soldered and tested, assemble the clear acrylic casing. Carefully peel off any protective paper covering from the acrylic panels. Heating the panels slightly with a hairdryer can assist in easier removal of the protective film. Pay attention to the different screw lengths for securing the speaker and circuit board to ensure proper fit and alignment with the standoffs.
Figure 4: Assembling the acrylic casing.
3.3 Power Connection
Connect the provided USB power cable to the radio kit and a suitable USB power source (e.g., a USB wall adapter, computer USB port, or power bank). The radio operates on DC power.
Figure 5: Connecting the radio to power.
4. Operating Instructions
4.1 Power On/Off
Press the power button to turn the radio on or off. The LCD display will illuminate upon power-on.
4.2 Searching and Storing Programs
To automatically search for FM stations, long-press the "AUTO" button. The radio will scan frequencies from 76-108MHz. When a station is found, it will be automatically stored in the memory chip for quick access later.
Figure 6: Automatic station search and storage.
4.3 Power Off Memory Function
The radio features a power-off memory function. When you turn the radio off, it will remember the last program or station that was playing. Upon turning the radio back on, it will automatically resume playing from that last station, eliminating the need to re-tune.
Figure 7: Power-off memory function.
4.4 Cool LED Flashing Lights
The radio is equipped with 5 LED lights that provide a dynamic visual experience. These LEDs will randomly flash different colors and pulse in sync with the beat of the music, enhancing your listening enjoyment.
Figure 8: LED lights flashing with music.
4.5 Headphone Jack
A 3.5mm headphone jack is integrated into the radio, allowing you to plug in your headphones for private listening without disturbing others. Headphones are not included with the kit.
Figure 9: Headphone jack for private listening.
4.6 Campus Broadcast and Backlight Settings
The radio offers advanced settings for campus broadcast and backlight control:
- Campus Broadcast Setting: In the power-off state, long-press the VOL+ and VOL- buttons simultaneously and then turn on the radio. If the LCD displays "C1", campus broadcast is enabled. If it displays "C0", campus broadcast is disabled. This setting takes effect after a restart.
- Backlight Setting: In the power-off state, long-press the P+ and P- buttons simultaneously and then turn on the radio. If "b1" is displayed, the LCD light will stay steady on. If "b0" is displayed, the LCD light will turn off after 20 seconds of inactivity to conserve power. This setting also takes effect after a restart.
Figure 10: Advanced settings for campus broadcast and backlight.
5. Maintenance
To ensure the longevity and optimal performance of your FM Radio Kit, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the radio. Avoid using abrasive cleaners or solvents, as they may damage the acrylic casing or electronic components.
- Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the radio with care to prevent damage to the circuit board or soldered connections. Avoid dropping the device.
- Power: Always use a stable USB power source. Disconnect power when the radio is not in use for extended periods.
6. Troubleshooting
If you encounter issues with your FM Radio Kit, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on. | Incorrect power connection; faulty soldering; component misplacement. | Ensure USB cable is securely connected to a working power source. Double-check all power-related solder joints and component orientations (e.g., diodes, capacitors). |
| Poor sound quality or static. | Weak signal; antenna not extended; poor speaker connection; faulty audio components. | Fully extend the telescopic antenna. Try repositioning the radio for better reception. Inspect speaker wire connections and ensure they are securely soldered. Verify all audio-related components are correctly installed. |
| LED lights not flashing or incorrect behavior. | Incorrect LED polarity; faulty LED; soldering issue. | Check the polarity of each LED during assembly. Re-solder any loose connections to the LEDs. |
| Buttons unresponsive. | Button installed incorrectly; soldering issue. | Ensure buttons are correctly seated and their pins are properly soldered to the PCB. |
| LCD display not working. | Incorrect LCD connection; faulty soldering. | Verify the LCD module is correctly connected to the main board and all pins are securely soldered. |
If the problem persists after attempting these solutions, please contact customer support for further assistance.
7. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 3.15 x 0.75 x 1.18 inches (80mm x 19mm x 30mm) |
| Item Weight | 1.76 ounces (50g) |
| Model Number | 5 LED Flashing Lights |
| Brand | IS (Icstation) |
| Tuner Technology | FM |
| Frequency Range | 76-108MHz |
| Power Source | DC (via USB) |
| Connectivity | USB (for power), 3.5mm Headphone Jack |
| Special Features | LED Flashing Lights, LCD Display, Power Off Memory, Auto Search & Store |
| Included Components | FM Radio Kit (all parts for assembly) |
Figure 11: Product dimensions.
8. Warranty and Support
IS (Icstation) is committed to customer satisfaction. While this is a DIY kit, our team is dedicated to ensuring your experience is positive. If you encounter any product-related problems or have questions during assembly or operation, please do not hesitate to contact us. We are here to provide professional help and support.
For further assistance, please visit the official Icstation store or contact their customer service directly through the platform where you purchased the product.