I have a speed radar system that has a com port on the back. I've connected to it by a USB serial adapter. The com port can be used to connect an external display, or connect to a video system. I'm using RealTerm to connect to it. The information being displayed doesn't appear to make any sense. The information being displayed does change if the radar system detects changes in speed.
This is basically what I see on the screen:
No speed:
À À À À
Changes in speed:
Ä Ä Ä Ä Ä
My end goal is to pipe the data into our CCTV system.
Can someone point me in the right direction to start with?
Related
I am writing some code for my arduino nano and I am using an HC-05 module for wireless transfer of data. I am sending my data as such. This is from the serial monitor, using a usb and regular print statements. I want to be able to recieve this data, and the store it in a csv (I know how to store incoming data). I need help recieveing my data.
22:17:46.765 -> =============================================================
22:17:47.770 -> Sleep timer:242
22:17:47.770 -> Light Sleep: 0 Deep Sleep: 0
22:17:47.805 -> Total Light Sleep: 0 Total Deep Sleep: 0
22:17:47.838 -> Total Sleep: 0
22:17:47.871 -> =============================================================
For some reason, when I connect my HC-05 to my windows desktop via bluetooth, and open a serial monitor in com ports 3 or 4, I get no read out.
My ports
I have it set up as so.
My wireless intialization
Then, I use
MySerial.print()
, to send data, yet I get no output, same thing occurs if I use
Serial.print()
.
I tried getting a new HC-05 module, Switched out all the hardware, tried different prints including Serial and MySerial. I though i could get an output.
Python code I tried to use python to extract the data, yet I get no output. I am not sure what to do here.
Not enough information, but I'll answer biased on the experience I've had with these modules.
Here are instructions for changing or verifying the baud rate on the module:
https://www.instructables.com/Change-the-Baud-Rate-of-HC-05-Bluetooth-Module-Usi/
For my module, I could just send AT commands by default without putting it into AT mode. Send 'AT' to the module and it should respond with "OK".
It helps a ton if you have an ftdi cable for troubleshooting. Connect the ftdi to the HC-05, verify the baud rate and that the HC-05 is responding, open a serial monitor for the bluetooth on the pc and one for the ftdi cable. Try sending data back and forth. Also, be 100% sure you're using the correct com port for your bluetooth by unpairing and repairing and see which com port shows up.
It actually is possible to use the HC-05 for programming the Arduino as well if you set the baud rate to 115200 and figure out a way to hit reset on the Arduino as soon as the bluetooth connects(status/state goes solid). I used an ATTiny for that, but you could just use a pin on the nano connected to reset and another pin to monitor the "state" pin which is connected to the led on the HC-05. That way you can have wireless data and wireless programming if you wanted that.
I have aquired a Citq H10, which is, in essence, an android tablet attached to a thermal printer. I pretty much made a paper weight out of the tablet, it doesn't start anymore, and I can't seem to do anything about it.
On the driver board of the printer, there is a MAX232 equivalent (UM3232EESE) so it would be evident, that it communicates over serial (rs232).
I have connected a DB9 connector, and I'm positive, i've done it right (the cursor on the terminal of COM1 pauses when turning on the printer).
There were a few test apps on an SD Card, and I reverse engineered some of it, I figured out, that it send info by copying bytes to the file of the port (I think). I tried copying the same bytes, but nothing happened.
So my question after all this text is: would I need a specific driver or do you see anything else wrong with my methods?
Tl,dr: can I use a thermal printer by copying bytes to it?
I am building a device and need to use a USB Nordic ID rfid reader. I have a Spark-fun USB host card (V9947), and now need the firmware to allow be bi directional chat in a 'rs232' style serial... just as if it were a hardware or software serial port on the Arduino.
Nordic support have reassured me that their library and examples for the Arduino are normally used with readers with RS232 ports, however the same code will work with their smaller USB device if I can overcome the USB/serial barrier.
I have the library and examples for the USB host board, but cannot determine which example code resembles my requirement requirement, I have looked through the library and found no answer there either.
This could be down to personal stupidity/ignorance... however never been this stumped before. the internet does not seem to have an answer, documentation and support for this board are at best meager.
I hope someone here has managed to solve what should be a simple mission, and I can get on with this project.
Thanks Ian
As not knowing what you already have done, I'll make a walk through the complete setup. Please check(do) each point evenif you think its done already:
Soldering and hardware have no shorts
pin headers of the shield are soldered with no shorts
USB Jack of Arduino is isolated on the top to prevent shorts
With the SparkFun board, it seems like you MUST supply external power on Vin or the barrel jack. 5V from the USB cable will not work reliable.
You must also run a jumper from pin D7 to RESET.
For the board (SparkFun DEV-09947) set up – these are mandatory pre-requirements.Now the software
The code/drivers you need to use for this board are on this GitHub page.
There is a diagnostic test which is extremely useful for checking wether your board is working correctly. Do as follows:
Upload this sketch to your Arduino, then open the Serial Monitor to see the diagnostic info.
To see the output set your Serial Monitor terminal speed to 115200
Plug in your hardware into the USB of the shield
Reset the Arduino to start the diagnostic
Step 1 – you’ll see it recognize the board and start a transfer test
Step 2 – you’ll see it attempt to test the GPIO pins – you’ll get “GPIO test failed” message. Type something in the box at the top of the Serial Monitor, then hit “Send” button and the diagnostic test will continue.
Step 3 – you should see it cycle through a bunch of resets, then it will attempt to detect an USB device – as we have a device plugged into the USB port on the shield you should then see some summary info with a final message of “All tests passed”
So NOW we know the hardware is working and basic software is running.
Next step driver installation/test program for the Nordic
Get the library from here
Import NurMicroApi_arduino.zip to IDE. From menu: Sketch->Include library->Add .ZIP library...
Open example. From menu: File->Examples->NurMicroApi->NurExample
Change baudrates and sw serial pins to match your arduino HW In this example NUR module is connected to arduino via software serial pin 10 (RX) and pin 11 (TX) with baudrate 38400. HW serial is used as print output.
You may have to change this to the USB card connections (see diag-SW)
As an easier option you can use the HID parser to check if your NUR is recognized If that works take a working exmple like:
Working HID example and try to read a tag then start coding with the NUR example from above if values are not correct interpreted
If you want to use the "pure" at-Terminal (RS-232) style you have to get rid of the usb shields functions (lib) and write your own Arduino firmware based (=overcome the USB/serial barrier) on the nordic-api (well documented) Hope this gets you started
So has anyone done this?
I'd like to store a hex file on an SD card and just blast it to any boards I have with the catarina bootloader on them when I connect to my uploader device.
This seems to be the correct protocol to talk to the catarina bootloader (the command definitions are at the end.) http://www.atmel.com/images/doc1644.pdf
If I manually force it into programming mode from COM4 by setting it to 1200 baud and closing the port, then opening COM5 and sending it one of the commands I do get a response as I would expect but even if I put it in programming mode by sending "P" it dropps back out after a second or two and doesn't stay in programming mode as I would expect.
It seems that the timeout gets reset/extended if certain commands are sent so I guess that makes sense.
all,
I wanted to do a capture and encoding of camera modules, and made in the form uvc device, now I have a development board can capture and encoding, If I implementing the board to act as a UVC device, when used otg or usb connection the development board, you can see the image acquisition.