HU-017A / HU-017B Multifunction FM Radio DIY Kit Instruction Manual

1. Pasiuna

This manual provides detailed instructions for the assembly and operation of your HU-017A or HU-017B Multifunction FM Radio DIY Kit. This kit is designed for enthusiasts to build their own FM radio, featuring an RDA5807S radio module for excellent reception and a TDA2822 power amplifier for clear sound. It includes a digital tube display, adjustable volume, and station memory functions, offering an engaging and educational electronics project.

2. Mga detalye

Note: Dimensions are approximate and may vary slightly. The specific battery type (AA/AAA) depends on the battery holder included with your kit version.

3. Mga Sulod sa Pakete

Your DIY radio kit includes the following components. Please verify all parts are present before beginning assembly.

Component List (HU-017B Example):

• HU-017B Circuit Board (PCB) x1
• Digital Tube Display x1
• Horn (Speaker) x1
• TDA2822 Amplifier IC x1
• M2 Screw Nuts (various)
• 16P IC Holder x1
• STC Microcontroller x1
• 8P IC Block x1
• Keycaps x4
• Radio Antenna x1
• Audio Socket (3.5mm) x1
• RDA5807 Module x1
• AMS1117 Voltage Regulator x1
• Potentiometer 200K x1 (blue adjustable resistor)
• 4P Red and Black Cable x1
• 104 Chip Capacitance x4
• 100uF Electrolytic Capacitor x4
• 1uF Electrolytic Capacitor x1
• Flip Switch (Power Switch) x1
• Red LED x1
• USB Socket x1
• 6x6x12.5 Buttons x4
• In-line Resistors (1K x5, 10K x8)
• Power Cord (USB Cable) x1
• Transparent Shell x1 (if 'With Shell' version)
• Battery Shrapnel (contacts) x1 set
• Self-tapping Screws x5 (if 'With Shell' version)
• Battery Box (for 2x AA or 3x AAA, depending on kit version)

Note: The exact quantity and type of some small components may vary slightly between HU-017A and HU-017B versions, and 'With Shell' vs 'No Shell' options. Always refer to the provided PCB and schematic diagrams for precise component placement.

4. Mga Instruksyon sa Asembliya

This is a DIY kit requiring basic soldering skills. Please proceed carefully and double-check all connections before applying power. Refer to the provided schematic and PCB diagrams for accurate component placement and polarity.

Mga Lakang sa General Assembly:

1. Pag-andam sa mga sangkap: Organize all components and identify them using the component list and diagrams. Pay close attention to resistor values and capacitor polarities.
2. Solder Resistors: Start by soldering the smallest components first, typically resistors. Match the resistor values to the markings on the PCB diagram.
3. Solder Diodes and Capacitors: Solder diodes, ensuring correct polarity (band usually indicates cathode). Solder ceramic capacitors (non-polarized) and then electrolytic capacitors, paying close attention to their polarity (+ and - markings).
4. Solder IC Sockets: Solder the IC sockets (16P and 8P) to the PCB. Ensure the notch on the socket aligns with the notch on the PCB silkscreen. Do NOT insert the ICs yet.
5. Solder Other Small Components: Solder the LED (mind polarity), buttons, power switch, USB socket, and 3.5mm audio socket.
6. Solder RDA5807 Module: Carefully solder the RDA5807 module to its designated spot on the PCB.
7. Solder Digital Tube Display: Solder the digital tube display.
8. Solder Potentiometer: Solder the blue adjustable potentiometer (R16).
9. Solder Speaker and Antenna Connections: Connect the speaker wires to the designated pads (usually marked SPK+ and SPK-). Solder the rod antenna base.
10. Insert ICs: Once all soldering is complete and cooled, carefully insert the STC Microcontroller and TDA2822 ICs into their respective sockets. Ensure the notch on the IC aligns with the notch on the socket and PCB.
11. Initial Test (Optional, Recommended): Before assembling the case, you may perform a quick power-on test with a 5V USB power supply to check for basic functionality (e.g., display lights up).
12. Adjust Potentiometer (Important): Before installing the housing, use a small screwdriver to rotate the blue potentiometer (R16) to adjust the sound quality to your preference. This is difficult to access once the case is closed.
13. Assemble Case (if included): If your kit includes a transparent shell, carefully assemble it around the PCB. Use the provided screws and nuts to secure the case. Ensure the battery holder (if applicable) is correctly positioned and connected.
14. Connect Battery Holder: If using battery power, connect the battery holder wires to the DC input pads on the PCB, observing polarity.

Always double-check your soldering for bridges or cold joints. Incorrect polarity or soldering can damage components.

5. Mga Instruksyon sa Pag-opera

1. Pag-on/Pagpatay: Use the slide power switch located on the side of the unit to turn the radio ON or OFF.
2. Power Supply: Connect a 5V USB power source via the USB port OR insert the required AA/AAA dry batteries into the battery compartment. Do not use both simultaneously.
3. Antenna: Extend the rod antenna fully for optimal FM signal reception.
4. Pag-adjust sa Volume:
   • Short Press V+ / V-: Increases or decreases the volume incrementally.
   • Long Press V+ / V-: Provides continuous volume adjustment.
5. Tuning sa estasyon:
   • Short Press F+ / F-: Switches to the next or previous stored station.
   • Long Press F+ / F-: Initiates an automatic search for the next available station (F+) or previous available station (F-).
6. Automatic Search and Memory: Upon initial power-on, the radio will automatically search for and store nearby FM stations. It can save up to 30 stations. The radio features power-off memory, retaining the last tuned station and volume level.
7. Audio Output: Use the integrated speaker for audio output. For private listening, connect 3.5mm headphones to the headphone jack.
8. Digital nga Display: The LED digital display shows the current radio frequency and can indicate signal strength. It also features a power-saving mode.

6. Pagmentinar

• Paglimpyo: Use a soft, dry cloth to clean the exterior of the radio. Avoid using harsh chemicals or abrasive materials.
• Pagpuli sa Baterya: If using batteries, replace them when the sound quality degrades or the unit fails to power on. Ensure correct polarity when inserting new batteries.
• Pagtipig: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.
• Likayi ang Umog: Keep the radio away from water and high humidity to prevent damage to electronic components.

7. Pagsulbad sa problema

8. Mga Tip sa Gumagamit

• I-verify ang mga sangkap: Before soldering, always double-check the values and polarity of each component against the PCB and schematic diagrams.
• Quality Soldering: Ensure all solder joints are shiny, smooth, and solid. Cold joints or solder bridges can cause malfunctions.
• Potentiometer Adjustment: For optimal sound quality, adjust the blue potentiometer (R16) with a small screwdriver kaniadto fully assembling the transparent case. This allows fine-tuning the audio output.
• Pagdugang sa Antenna: Always extend the rod antenna fully for the best possible FM reception.
• Tinubdan sa Gahum: If using battery power, ensure fresh batteries are installed correctly. If using USB, ensure a stable 5V power source.
• Learning Opportunity: Take your time during assembly. This kit is an excellent opportunity to learn about basic electronics and radio principles.

9. Garantiya ug Suporta

As a DIY kit, specific warranty terms may vary. Please refer to the seller's policy for details. For technical assistance, troubleshooting, or inquiries regarding missing/defective parts, please contact the seller directly through the platform where the kit was purchased. Provide your order number and a clear description of the issue for prompt support.