Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as an Arduino Pro Mini, an RDA5807M FM receiver, an Adafruit ADS1115 ADC, an LCD screen, a PAM8403 amplifier, a rotary encoder, a telescopic antenna, and other supporting components. The circuit is designed to interface these components to achieve a specific functionality, which is controlled by the Arduino Pro Mini microcontroller.

Component List

RDA5807M

• Description: FM receiver module
• Pins: SDA, SCL, NC, Vcc, GND, Rout, Lout, ANT

Arduino Pro Mini v13

• Description: Microcontroller board
• Pins: DTR, D0/TX, D1/RX, VCC, GND, A4, A5, RAW, RESET, A3, A2, A1, A0, D13/SCK, D12/MISO, D11 PWM/MOSI, D10 PWM/SS, D9 PWM, D8, D7, D6 PWM, D5 PWM, D4, D3 PWM, D2

Adafruit ADS1115 16Bit I2C ADC

• Description: 16-bit analog-to-digital converter
• Pins: VDD, GND, SCL, SDA, ADDR, ALERT, AIN0, AIN1, AIN2, AIN3

LCD Screen

• Description: Display module
• Pins: Backlight (GND), VSS, VDD, Contrast, RS, E, R/W, D0, D1, D2, D3, D4, D5, D6, D7, Backlight_PWR

PAM8403

• Description: Audio amplifier module
• Pins: 5vIN+, GND/IN-, R-INPUT, GND, L-INPUT, L-, L+, R+, R-

XL6009E1 Boost Converter

• Description: DC-DC boost converter
• Pins: IN+, IN-, OUT-, OUT+

Rotary Encoder

• Description: Rotary encoder for user input
• Pins: GND, +, SW, DT, CLK

Telescopic Antenna

• Description: Antenna for FM receiver
• Pins: Antenna

Loudspeaker

• Description: Audio output device
• Pins: pin1, pin2

Trimmer Potentiometer

• Description: Adjustable resistor
• Pins: leg1, wiper, leg2
• Properties: Resistance: 10000 Ohms

Rocker Switch 4 Pin

• Description: Switch for user input
• Pins: 1, 3, 2, 4

IP2312

• Description: Power management IC
• Pins: B-, B+, IN-, IN+

BMS 1S1P 3.7V 3A (for 18650)

• Description: Battery management system
• Pins: B+, P+, P-, B-

pMOS Transistor (MOSFET)

• Description: Transistor for switching
• Pins: gate, drain, source

Diode

• Description: Diode for current direction control
• Pins: cathode, anode

Resistor

• Description: Fixed resistor
• Pins: pin1, pin2
• Properties: Resistance: 10000 Ohms, 100000 Ohms

Adafruit USB Type C Breakout

• Description: USB Type-C breakout board
• Pins: GND, VBUS, SBU2, CC1, D-, D+, SBU1, CC2

2000mAh Battery

• Description: Rechargeable battery
• Pins: VCC, GND

Wiring Details

RDA5807M

• SDA: Connected to Arduino Pro Mini A4 and Adafruit ADS1115 SDA
• SCL: Connected to Arduino Pro Mini A5 and Adafruit ADS1115 SCL
• Vcc: Connected to XL6009E1 Boost Converter OUT+
• GND: Connected to XL6009E1 Boost Converter OUT-
• Rout: Connected to PAM8403 R-INPUT
• Lout: Connected to PAM8403 L-INPUT
• ANT: Connected to Telescopic Antenna Antenna

Arduino Pro Mini v13

• A4: Connected to RDA5807M SDA and Adafruit ADS1115 SDA
• A5: Connected to RDA5807M SCL and Adafruit ADS1115 SCL
• VCC: Connected to XL6009E1 Boost Converter OUT+
• GND: Connected to XL6009E1 Boost Converter OUT-
• A0: Connected to LCD screen E
• D13/SCK: Connected to LCD screen D7
• D12/MISO: Connected to LCD screen D6
• D11 PWM/MOSI: Connected to LCD screen D5
• D10 PWM/SS: Connected to LCD screen D4
• D9 PWM: Connected to LCD screen D3
• D8: Connected to LCD screen D2
• D7: Connected to LCD screen D1
• D6 PWM: Connected to LCD screen D0
• D5 PWM: Connected to LCD screen RS
• D4: Connected to Rotary Encoder SW
• D3 PWM: Connected to Rotary Encoder DT
• D2: Connected to Rotary Encoder CLK

Adafruit ADS1115 16Bit I2C ADC

• SDA: Connected to Arduino Pro Mini A4 and RDA5807M SDA
• SCL: Connected to Arduino Pro Mini A5 and RDA5807M SCL
• VDD: Connected to XL6009E1 Boost Converter OUT+
• GND: Connected to XL6009E1 Boost Converter OUT-
• AIN0: Connected to Rocker Switch 4 Pin 4

LCD Screen

• Backlight_PWR: Connected to XL6009E1 Boost Converter OUT+
• VDD: Connected to XL6009E1 Boost Converter OUT+
• Backlight (GND): Connected to XL6009E1 Boost Converter OUT-
• VSS: Connected to XL6009E1 Boost Converter OUT-
• R/W: Connected to XL6009E1 Boost Converter OUT-
• Contrast: Connected to Trimmer Potentiometer wiper
• E: Connected to Arduino Pro Mini A0
• RS: Connected to Arduino Pro Mini D5 PWM
• D7: Connected to Arduino Pro Mini D13/SCK
• D6: Connected to Arduino Pro Mini D12/MISO
• D5: Connected to Arduino Pro Mini D11 PWM/MOSI
• D4: Connected to Arduino Pro Mini D10 PWM/SS
• D3: Connected to Arduino Pro Mini D9 PWM
• D2: Connected to Arduino Pro Mini D8
• D1: Connected to Arduino Pro Mini D7
• D0: Connected to Arduino Pro Mini D6 PWM

PAM8403

• 5vIN+: Connected to XL6009E1 Boost Converter OUT+
• GND/IN-: Connected to XL6009E1 Boost Converter OUT-
• R-INPUT: Connected to RDA5807M Rout
• L-INPUT: Connected to RDA5807M Lout
• L-: Connected to Loudspeaker pin1
• L+: Connected to Loudspeaker pin2
• R+: Connected to Loudspeaker pin2
• R-: Connected to Loudspeaker pin1

XL6009E1 Boost Converter

• IN+: Connected to Rocker Switch 4 Pin 3
• IN-: Connected to BMS 1S1P 3.7V 3A P- and IP2312 B-
• OUT+: Connected to Adafruit ADS1115 VDD, Arduino Pro Mini VCC, Trimmer Potentiometer leg1, RDA5807M Vcc, LCD screen Backlight_PWR, LCD screen VDD, PAM8403 5vIN+, Rotary Encoder +
• OUT-: Connected to Adafruit ADS1115 GND, Arduino Pro Mini GND, Trimmer Potentiometer leg2, RDA5807M GND, LCD screen Backlight (GND), LCD screen VSS, LCD screen R/W, PAM8403 GND/IN-, PAM8403 GND, Rotary Encoder GND

Rotary Encoder

• GND: Connected to XL6009E1 Boost Converter OUT-
• +: Connected to XL6009E1 Boost Converter OUT+
• SW: Connected to Arduino Pro Mini D4
• DT: Connected to Arduino Pro Mini D3 PWM
• CLK: Connected to Arduino Pro Mini D2

Telescopic Antenna

• Antenna: Connected to RDA5807M ANT

Loudspeaker

• pin1: Connected to PAM8403 L- and R-
• pin2: Connected to PAM8403 L+ and R+

Trimmer Potentiometer

• leg1: