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the range was b/w 400m - 500m, in clear area, the antenna's facing each other. when hidden behind a building the apc's stopped communicating after 400m approx , there might be a problem with battery voltages, cause i designed the power-supply to work at 8-30v DC, and i had to use 9v batteries...
just finished the product, the APC220's work superbly, it is an elegant solution for RF communication. But it is semi-duplex, one can use 2 for full duplex communication with a MCU with 2 serial ports.
@vlsi_whiz and prakashvannugopal, i forgot to change the reset circuitry in the proteus design, im sorry abt it, but when i implemented the hardware, i placed same (exact) circuit with momentary switch and 10uF capacitor as given in mazidi book and it works fine in hardware, i have tested it. so...
hello all,
i have implemented the given circuit , in hardware and software, the 8051 code is simple i give a pulse of 0.5s at pin 2.0. Neither the hardware nor the software is working :???: :sad:, i have attached the Proteus design. please tell me why buzzer does not give a beep whereas the LED...
yes it did, well i checked on bread board and configured both mcus to blink some leds at 9600 baud rate via APC220's wireless configuration, both were working fine, ie sending and receiving data. but one of the mcu wasnt blinking the leds, that might be fault of loose wiring.
So to answer ur...
I just wanted to know before starting the PCB design that if i connect APC220 (stock- just out of the box) RX and TX pins to my 8051 TX and RX pins running at 9600 baud rate; would it be sufficient enough to communicate to the other 8051; and i have tested that on the breadboard today, and it...
hello all,
i am building an application where i am going to send and recieve data wirelessly between 2 or more microcontrollers. i have tested my code with 2 mcus, and it is working fine. Now i need help in the "wireless" part, i want a component which i can interface with 8051's serial port...
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