Introduction: FM Radio Kit Soldering Project With Headphone Jack

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Introduction:

HU-017ASW is an RDA5807 87.0MHz-108.0MHz Wireless FM Radio Receiver DIY Kit with 4bit digital tube. It uses the 87-108MHz global FM receiving frequency band, which can meet the FM needs of users around the world. It provides two power supply modes for users to use at home or outdoors.

It is a very interesting DIY electronic product which enables users to understand the circuit more clearly and learn soldering skills.

Feature:

1.87.0MHz-108.0MHz FM Radio: Built in RDA5807 FM data processor with standard FM receiving frequency band, applicable to any country and region in the world. Adjustable FM frequency by press F+ and F- buttons.

2.Adjustable Volume: It provides two volume adjustment methods: button and potentiometer. 15 volume levels.

3.Active & Passive Audio Output: It not only has built-in 0.5W power amplifier to directly drive 8ohm speakers,but also outputs audio signal to the headset or loudspeaker with AUX interface.Realize personal listening and sharing of FM audio.

4.Configure 25cm dedicated FM antenna and 4Bit red digital tube.Real time display of FM radio frequency.Transparent acrylic shell protect the internal circuit board. Dual power supply methods: 5V USB and 3V battery.

5.DIY Hand Soldering. It’s a DIY kit which comes with various components. User need to install each component by hand. It not only can exercise and improve soldering skills, but also increase the interest in electronic technology. Great for electronics hobbyists, beginners, school and home education.

Supplies

Practical DIY Kit

This is a radio electronics soldering kit, come with a package of electronic components and shells, users need to use soldering tools (not included) for assembly.

Perfect for electronics hobbyists and beginners to learn soldering skills and abilities while getting a practical radio.

2 Power Supply Modes

Come with USB power cable, plug in the power supply can be used. In addition, you can solder a battery case yourself, install the battery and take it with you.

With A Headphone Jack

After assembled, you will get a functional radio that has a headphone jack so that you can plug in your headphones and enjoy the channels yourself.

Free Adjustment

You can freely adjust the channel and the volume you want to listen to, and in addition, you can adjust the volume by adjusting the potentiometer on R1.

Attachments

Step 1: Install 1pcs SMD Components SOP-16 74HC595D Register FM Receiver at U3

There is a white gap on PCB silk screen at U3 and there is a mark(dot)

on IC. These two marks are corresponding to each other and are used to specify the

installation direction.

Step 2: Install 1pcs SOT-223 AMS1117-3.3V Voltage Converter at U10 by the Same Method.

Step 3: Install 1pcs SMD RDA5807M FM Receiver at U1 by the Same Method.

Step 4: Install 8pcs 510ohm Metal Film Resistor at R7-R14

Step 5: Install 5pcs 1Kohm Metal Film Resistor at R6,R17-R20

Step 6: Install 5pcs 10Kohm Metal Film Resistor at R2-R5,R16

Step 7: Install 1pcs 2Pin SMD Micro USB Socket at DC

Step 8: Install 1pcs DIP-28 IC Socket at U2

Step 9: Install 1pcs DIP-8 IC Socket at U9

Step 10: Install 1pcs 3mm Red LED at D1

Step 11: Install 4pcs 0.1uF 104 Ceramic Capacitor at C1,C2,C6,C9

Step 12: Install 1pcs 3.5mm AUX Audio Socket at U4

Step 13: Install 1pcs Toggle Switch at P5

Step 14: Install 4pcs 100uF 16V Electrolytic Capacitor at C4,C5,C7,C8

Step 15: Install 1pcs TO-92 S8550 Transistor at Q1-Q4

Step 16: Install 1pcs 4Bit Red Digital Tube at U7

Step 17: Install 1pcs 1uF 50V Electrolytic Capacitor at C3

Step 18: Install 1pcs 200Kohm Potentiometer at R1

Step 19: Install 4pcs 6*6*8mm Black Button at S1-S4

Step 20: Install 1pcs DIP-28 STC15W404AS MCU at U2

Step 21: Install 1pcs DIP-8 TDA2822M Amplifier at U9

Step 22: Install 1pcs Red/Black Wire to 0.5W 8ohm Speaker.

Step 23: Connect 0.5W 8ohm Speaker to PCB

Step 24: Fix FM Radio Antenna at U6 on PCB Back by M2*6mm Screw and M2 Nut

Step 25: Connect AA*2 Battery Box to PCB. Red Wire to ‘ + ’ Pad

Step 26: Paste the Speaker and Battery Box on the PCB Back With Double-sided Adhesive Tape, and Pay Attention to the White Line Area on the PCB to Define Their Positions

Step 27: Fix 4pcs M3*8+6mm Nylon Column Screw on PCB by 4pcs M3 Nut

Step 28: Tear Off the Protective Film on the Surface of the Acrylic Shell

Step 29: Fix Bottom Acrylic Board by 4pcs M3*5mm Screw

Step 30: Place 4pcs Side Acrylic Board

Step 31: Fix Top Acrylic Board by 4pcs M2*22mm Screw and 4pcs M2 Nut

Step 32: Connect to Power Supply and Enjoy the Effect