guys i'm monitoring something using some sensors connected to an 89C51 MCU.
what i want to do is send the collected data to my computer located 100 to 200 meters away.
how many RS232 to RS485 devices do i need? is it two? one for the 89C51 and another for my computers serial port?
how about the wire? im planning to use a CAT5e UTP cable.
here's the link of the converter circuit that i will use.
**broken link removed**
do you think this circuit is enough? considering it is already opto-isolated to protect my serial port.
what else should i need for my project? how do i terminate the cables?
what i want to do is send the collected data to my computer located 100 to 200 meters away.
how many RS232 to RS485 devices do i need? is it two? one for the 89C51 and another for my computers serial port?
how about the wire? im planning to use a CAT5e UTP cable.
here's the link of the converter circuit that i will use.
**broken link removed**
do you think this circuit is enough? considering it is already opto-isolated to protect my serial port.
what else should i need for my project? how do i terminate the cables?