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I want to encourage you to ultimately continue your great work, have a nice weekend! Nice Usb I also have a lot of problems when it comes to drivers lol.
Home Questions Tags Users Unanswered. With chip name I could easily find that driver for older Windows versions was available from chip manufacturer CH page and at DriverGuide. Things worked and I had found the information on chip used in this adapter: It’s a “half duplex bus system” the ends of the bus should have a “end termination resistor”, usually Ohms, between the A and B signal.
Within these tutorials they give examples of problems and show what there is to solve them. Fail-safe bus biasing is one way to alleviate this problem.
Are you writing pin 2 LOW, to put the chip into receive mode? Connect B to B.
USB to RS Adapter |
If possible, it may also be worthwhile to follow some tutorials mad485 Arduino get a starter kit and book with tutorial projects? RS is a half-duplex thing, so your Arduino needs to control when it wants to talk to the line or listen.
September 18, at 2: I tried what you told me ilguargua, no echo in serial monitor, but is it even possible to do a loopback test on a rs in that way? Did you connect the second module to the PC Gnd? The only mod I did was to install a ground wire running from the USB connector shield to the ground of the target circuitry. The device promises to support bps baud rate and automatically detect the serial data rate signal.
Home Questions Tags Users Unanswered. I don’t know much about Raspi and their pins, as the only thing I ever used with them was DS real time clock module. Not both at the same time. So far so good.
Because I have doubt, without some configuration how the same chip will work with both RS and RS converters. You can then more easily spot where the problem is.
However starting a project as a beginner with so many unknown factors can hardly lead to a success. If that fixes your problem, check your Gnd lines. For that you need a separate pin to be connected to RE and DE together. If I nax485 read the data over serial port, would it be just a plain text as shown on PC in Arduino ide serial monitoror has each value its address that I could then easily accessing to a variable then being used to process the weather data?
Your email address will not be published. If you need to have more features, you might to turn to more expensive options, from which most promising looks to be this FTDI chip based module or this USB 2. I will make sure to bookmark your blog and may come back later on.
USB to RS485 Adapter
I first tried to connect this to my old Windows Vista PC. The verdict is that this produc t is cheap and seems to work pretty much as promised except that it does not seem to have the over-voltage protection mentioned on product description.
The RS input is not terminated, but there is pull-up and pull-down resistors to keep the RS line at well defined state when transmitter is turned off there is 2.
RS is basically a clever variant of a serial port, which allows you sending your data over up to 1. Given an appropriate transmitter and antenna combination, wireless links can extend over miles inbetween nodes.