bale ito po yung mga devices na ginamit namin.. 8 potentiometers connected sa PIC 16F877 then connected sa tranceiver. eto po yung specs ng ginamit naming tranceiver:
Product Number RMB-CM12111
Product Name Wireless RF Transceiver 431-478MHz GFSK Data Transfer x 2
Size (only PCB) 39.60mm(L) X 19.30mm(W) X 4.32mm(H) ±0.2mm
Net Weight 28g/1.0oz
Brief Introduction:
This package consists of two mini half-duplex wireless data transceiver modules and each such module is highly integrated with an ultra speed MCU and a powerful RF chip. With the introduction of the innovative yet higly-efficient encoding method, its anti-interference ability and sensitivity are significantly improved. Features like various channel options, ultra long transmission distance (1000 meters) or abundant interfaces (UART/TTL, RS-485 & RS-232) helps make the transmission of data of any size possible and eliminate the needs of writing transmission program and running complicated settings. A software application ("RF-Magic") is offered for free so that users can modify the settings of the module. Besides, its slim size and wide power supply range makes itself the most popular sel ection of many applications in different fields.
Features:
• Ultra long transmission distance: 800-1000 meters @1200bps
• Working frequency: 431-478Mhz (1KHz step)
• +3.3-5.5V wide power supply range
• -112dBm(9600bps) high sensitivity
• Over 100 channels
• GFSK modulation
• Highly efficient cyclic interleaving error correction encoding
• Flexible software programme option settings
• Selectable RFID index
• UART/TTL, RS-485 & RS-232
• Large data buffer: 512bytes
• Suitable for massive data transfer
• Built-in watchdog ensures long-term operation
Specifications:
Parameter Value
Power Supply 3.3 – 5.5 (± 50mV ripples)
Frequency Range 431MHz to 478MHz (1KHz frequency step)
Frequency Interleaving 200KHz
Output Power 20mW ( 10 levels adjustable)
Receiving Sensitivity -117dBm@1200bps
airborne speed 1200 – 9600bps
Speed In Port 1200 – 9600bps
Parity Check 8E1/8N1/801
Operating Humidity 10% - 90%
Operating Temperature -20℃ - 70℃
Transmission Mode Current ≦35mA@10mW
Receiving Mode Current ≦28mA
Sleep current ≦5uA
Transmission Distance 800-1000m (visible range in open area)
Pinout:
Pins Definition Description
1 GND 0V
2 VCC 3.3V-5.5V
3 EN POWER ENABLE(≧1.6V) or SUSPENDED ENABLE(≦0.5V Hibernation)
4 RXD UART input, TTL
5 TXD UART output, TTL
6 B/RX RS485- or RS232 RX
7 A/TX RS485+ or RS232 TX
Dimensions:
Settings of "RF-Magic (Ver:4.2)":
Settings Options Default
Series Rate 1200,2400,4800,9600bps 9600bps
Series Parity Disable, Even parity, Odd parity Disable
Types of Series RS485, RS232 RS485
RFID Disable Disable, Enable Disable
RFID Index 0-65536 (16 bit) 12345
RF Frequency 431-478MHz (1kHz step, accuracy ±100Hz) 434MHz
Series rate 1200,2400,4800,9600bps 9600bps
Freq Deviation 5.4, 10.8, 21.6, 43.2, 86.4KHz 21.6 KHz
RF Power 1-10 (10 indicates 20mW) 10 (20mW)
then sa receiver side, connected po yung receiver sa isa pang PIC 16f877 and then, sa mga 8 servo motors.
