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Description
This DIY kit (HU-017A) is a wireless FM radio receiver with a 4-digit 7-segment display. It operates within the global FM receiving frequency band of 87.0-108.0 MHz, making it suitable for use in any country or region. The kit offers two power supply modes, allowing you to use it both at home and outdoors. This DIY electronic product will help you understand circuits and improve your soldering skills.
Features
- 87.0-108.0 MHz FM Radio: Built-in RDA5807 FM data processor with a standard FM receiving frequency band. The FM frequency can be adjusted using the F+ and F- buttons.
- Adjustable Volume: Two volume adjustment methods – button and potentiometer. There are 15 volume levels.
- Active & Passive Audio Output: The kit has a built-in 0.5 W power amplifier to drive 8 Ω speakers directly. It also outputs audio signals to headsets or loudspeakers with AUX interfaces, allowing personal listening and sharing of FM audio.
- Configured with a 25 cm dedicated FM antenna and a (red) 4-digit 7-segment display for real-time display of FM radio frequency. The transparent acrylic shell protects the internal circuit board. It supports dual power supply methods – 5 V USB and 2x 1.5 V (AA) batteries.
- DIY Hand Soldering: The kit comes with various components that need to be installed manually. It helps exercise and improve soldering skills, making it suitable for electronics hobbyists, beginners, and educational purposes.
Specifications
| Operating voltage | DC 3 V/5 V |
| Output impedance | 8 Ω |
| Output power | 0.5 W |
| Output channel | Mono |
| Receiver frequency | 87.0 MHz~108.0 MHz |
| Frequency accuracy | 0.1 MHz |
| Operating temperature | −40°C to +85°C |
| Operating humidity | 5% to 95% RH |
| Dimensions | 107 x 70 x 23 mm |
IMPORTANT: Remove the batteries when powering the radio over to USB.
Included
- 1x PCB
- 1x RDA5807M FM Receiver
- 1x STC15W404AS MCU
- 1x IC Socket
- 1x 74HC595D Register
- 1x TDA2822M Amplifier
- 1x IC Socket
- 1x AMS1117-3.3 V Voltage Converter
- 18x Metal Film Resistor
- 1x Potentiometer
- 4x Ceramic Capacitor
- 5x Electrolytic Capacitor
- 4x S8550 Transistor
- 1x Red LED
- 1x 4-digit 7-segment Display
- 1x Toggle Switch
- 1x SMD Micro USB Socket
- 1x Radio Antenna
- 1x AUX Audio Socket
- 4x Black Button
- 4x Button Cap
- 1x 0.5 W/8 Ω Speaker
- 1x Red/Black Wire
- 2x Double-sided adhesive
- 1x AA Battery Box
- 1x USB cable
- 6x Acrylic Board
- 4x Nylon Column Screw
- 4x M3 Screw
- 4x M3 Nut
- 4x M2x22 mm Screw
- 1x M2x6 mm Screw
- 5x M2 Nut
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