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can you connect this attiny85 to a fm receiver rda5807
gtbh2024

gtbh2024

@copilot can you connect this attiny85 to a fm receiver rda5807
2y

copilot

To connect an ATtiny85 to an FM receiver module like the RDA5807M, we'll first need to decide on the communication protocol to use. Typically, the RDA5807M supports I²C communication, which is perfect for interfacing with the ATtiny85 since it's capable of I²C communication through its USI (Universal Serial Interface).
Assumptions
  • The ATtiny85 will communicate with the RDA5807M using I²C.
  • A basic connection for power and ground, as well as I²C communication lines, is required.
  • The operating voltage for both devices is compatible (usually 3.3V or 5V, but I'll assume 5V for the ATtiny85V-10PU).
  • You have configured the ATtiny85 to use its USI as an I²C master.
Connection Steps
  1. Power Connections:
    • Connect VCC (P:8) of the ATtiny85 to the VCC (usually pin 1) of the RDA5807M. This is the positive supply voltage.
    • Connect GND (P:4) of the ATtiny85 to the GND (usually pin 8 or as per RDA5807M pinout) of the RDA5807M. This is the ground connection.
  2. I²C Communication Lines:
    • The ATtiny85 doesn't have dedicated I²C pins but uses its General Purpose I/O pins with Universal Serial Interface (USI) for I²C communication. Pins PB0 (P:5) and PB2 (P:7) can serve as SDA (Data Line) and SCL (Clock Line) respectively, after proper configuration in software.
    • Connect PB0 (P:5) of the ATtiny85 to the SDA pin of the RDA5807M. This is the I²C Data line.
    • Connect PB2 (P:7) of the ATtiny85 to the SCL pin of the RDA5807M. This is the I²C Clock line.
Additional Notes
  • Ensure that both the ATtiny85 and the RDA5807M are configured to operate at the same logic level (e.g., 5V or 3.3V) for compatibility.
  • You might need pull-up resistors on both the SDA and SCL lines, typically in the range of 4.7kΩ to 10kΩ, connected to VCC. This is a common requirement for I²C communication.
  • Remember to program the ATtiny85 with the appropriate firmware to initialize I²C communication and control the RDA5807M.
Example Connection List
  • Connect P:8 to RDA5807M VCC.
  • Connect P:4 to RDA5807M GND.
  • Connect P:5 to RDA5807M SDA (with a 4.7kΩ to 10kΩ pull-up resistor to VCC recommended).
  • Connect P:7 to RDA5807M SCL (with a 4.7kΩ to 10kΩ pull-up resistor to VCC recommended).
If any of the assumptions are incorrect, or you need further details, please let me know!
2y
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2
AREF/PB0
PB1
XTAL1/PB3
~RESET~/PB5
VCC
XTAL2/PB4
GND
PB2

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