APC220 Radio Data Module - Version: 1.
This APC220 is a highly versatile, low power radio solution that is easy to setup and integrate into any project
requiring a wireless RF link.
It is perfect for robotic application which gives you a wireless control. You can connect one of these modules
with your MCU through TTL interface. And connect your PC with another APC220 module through a
TTL/USB converter.
Working frequency: 431 MHz to 478 MHz
Power: 3.3-5.5V
Current: <25-35mA
Working temperature: -20℃～+70℃
Range: 1200m line of sight (1200 bps)
Interface: UART/TTL
Baud rate: 1200-19200 bps
Baud rate (air): 1200-19200 bps
Receive Buffer: 256 bytes
Size: 37mm × 17 mm × 6.6mm
Weight: 30g
1 of 9 12/31/2013 10:07 AM
USB-TTL Converter Pin out diagram
Pin Definition Detail
1 GND 0V Ground
2 VCC 3.3V-5.5V Power
Enable the device when leave it disconnected or apply >1.6V
3 EN
Disable the device when apply <0.5V
2 of 9 12/31/2013 10:07 AM
4 RXD UART RX
5 TXD UART TX
6 AUX UART Signal- Receive (low) Transmit (high)
7 SET Set parameters (low)
Baud Rate: 9600 bps
Bits: 8
Parity: None
Stop bit: 1
RF Frequency: 431 MHz
Air Rate: 9600 bps
Output Power: 20mw
EN pin: Enabled ( if not connected it will be enabled )
Connect APC220 to PC
To connect APC220 to PC, a TTL to RS232 or TTL to USB converter is required.
Connect APC220 to PC via RS232-TTL converter
Connect APC220 to MCU
3 of 9 12/31/2013 10:07 AM
Any MCU which has TTL port is able to talk to APC220. A diagram is shown below for easy connection.
Connect APC220 to MCU
Connect PC to MCU via APC220
To connect PC with MCU via APC220, a RS232-TTL or USB-TTL converter is required.
4 of 9 12/31/2013 10:07 AM
Connect PC to MCU via APC220
Connect PC to PC via APC220
To connect PC to PC via APC220, two USB-TTL or RS232-TTL converters are required. A diagram is
illustrated below.
5 of 9 12/31/2013 10:07 AM
USB-TTL driver download
How to use RF-magic
Download RF-Magic Configure software.
Extract the folder.Find the software, right click, run as administrator.
6 of 9 12/31/2013 10:07 AM
Set the parameter of APC220 module.Choose your correct COM Serial port, and press "write".(the
default setting is OK)
Set the other APC220 module again.
NOTE:It is better to choose COM1~4 as the serial port of APC220
APC220 Module Example
7 of 9 12/31/2013 10:07 AM
Plug one module to your PC. and plug another one to your Arduino.
Upload the test code to Arduino
1 void setup()
2 {
3 Serial.begin(9600); //Set serial baud rate to 9600
4 }
5
6 void loop()
7 {
8 Serial.println("Hello!"); //print out hello string
9 delay(1000); //1 second delay
10}
Now,you can communicate your PC with your Arduino by apc220 module.As my APC220 Module use
COM1,we can use arduino IDE Serial port to check the COM1 directly.
8 of 9 12/31/2013 10:07 AM
Linux issue: The current on the En pin of adapter is different when using the USB-Serial board on Linux. The
same issue happens on Mac.The solution is not to plug the En pin, using a cable, or a little handmade breakout
board.
Windows (64-bit OS): You should set the RF-Magic program's compatibility to "windows XP (Service pack
3)" and "run this program as administrator"
You can find these options by right clicking on the program icon and selecting "properties" then by going to
the "Compatibility" tab
9 of 9 12/31/2013 10:07 AM
