I have with me 3 Beckhoff control touchscreen panels. Some multi-touch some single-touch,
There is no manual anywhere, I'm only capable of running them as windows monitors, but i want to make programs that capture the coordinates of my touch and do something with them,
(that done on different platforms like arduino, python, ...)
How do I use the USB or Serial interfaces to communicate with the touchscreen? How do I know its output when I press somewhere?
If you want to do this on arduino, you have the possibility of serial communication with the example here. The second thing is, that arduino native programming language is C and the last thing is, that the controller of the touchscreen has some pins. Some are tx pins some are power pins. To find out which is which is your task. Google around to find out the pinouts. Maybe have a look at the chip on the controller and find a datasheet to it and then trace the vias to the pins and read them with the serial communication pin rx on your arduino.
Related
I'm getting interested in electronics. As a beginner thing, I wanted to try to manually turn on and off my plasma globe through Python code. The globe takes in a 5 volt DC power supply. I can power it through my laptop, which is a nitro 5. So it's sending a constant 5 volts.
I need to communicate with the USB (serial port?). The module Pyserial seems to be the right choice. However, no matter what I try it can't identify the USB serial port. Not even when I plug in a phone. I think it can only identify a COM port, whatever that is. What's the difference? In my device manager, there isn't even a COM port section.
I know it's possible to communicate through that USB port because it can send data to and from my phone, so is this simple thing even possible? Thanks!
Well, the problem is that your plasma ball has most likely not USB interface at all, meaning that from the 4 wires you maybe got inside the cable (rx; tx; GND; 5V) only the 5 volts are used inside the ball to give the HV circuit power.
Other than that, pyserial is a meant to be used for serial communication like devices with RS232 not USB interface.
If i wanted to control the ball from my computer with software i would program an AVR µc to interact via serial communication (probably with an MOS-FET as a switch), from that point on you could use for example your python module to turn it on and of.
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
I am using ESP8266 (NODEMCU 3.0 or something) to make a quadcopter. Ive connected ardu pro mini to RC receiver so I am reading PPM values from it. Pro mini sends data with tx to ESP8266. ESP reads it with software serial with 115200 baudrate. I am communicating with MPU9255 (Waveshire) via I2C either.
My problem is that I cant fully controll my brushless motors. When I was using arduino instead of ESP8266, servo library was the best and reliable. But ESP's servo library is different, since its not AVR, and problems occurs. First of the servo library didnt want to work on most frequencies. I mean default is 50Hz (20000uS) and in this state ESC of motors did armed but unfortunatelly when changes was fast and short (1250-> 1370 -> 1250) it did miss that change like nothing happnd... This makes my D value in PID controller useless...
Sometimes on 100Hz freq all was working fine, but sometimes not...
When Ive started to use analogWrite only 500Hz was working fine, rest of freq didnt want to arm ESCs.
PS. I am using 3.3V to 5V converter for PPM/PWM pins so I am sure that the signal is fine for ESCs.
PS2. I dont have any osciloscope unfortunately.
The ESP82266 present on your module is a RF transceiver integrated circuit that can handle WiFi communication, both configured as a slave to a microcontroller such as the ones present on various Arduino boards, or as a standalone chip by having it's on-board Tensilica L106 32-bit processor programmed via an external SPI flash memory. If used as a slave, the communication between, for example, an Arduino an the ESP82266 can be done using different protocols such as SPI / SDIO or I2C / UART interfaces. Googling a comprehensive Tensilica L106 user guide on the internet doesn't seem an easy task, and it looks as if some people have already failed to find it. If you're seeking to add Wi-Fi capabilities to your quadcopter the solution I suggest is having the Arduino take control over the servos, motors, etc. and hand off messages via SPI to your ESP82266 module. If this isn't the answer you are looking for, please try to be clearer about it, maybe find someone to do as an English translator for you.
However, if this is what you're concerned about, and you would like to use the ESP82266 module as as standalone solution, please link its built-in processor datasheet and the relevant parts of the quadcopters code that might need debugging.
Hello has anyone found a way to use an Arduino as a serial device and hid device at the same time?
I thought of a few solutions but didn't know the best way to go about it.
my goal is I need a serial device so the computer can send info to the Arduino but I also need an hid device.
can I use them both though 1 USB port? probably not
or
can I rig up another usb or serial port on the Arduino and use that as hid?
or
should I connect the Arduino to a teensy and use that for hid?
Thank you just trying to find the safest solution I'm making a custom fixture for my little laser engraver.
I recommend getting an Arduino Leonardo, Arduino Micro, an A-Star 32U4, or any other Arduino-compatible ATmega32U4 board. These devices act as a USB serial port but they can also be an HID at the same time if you use the Keyboard or Mouse libraries that comes with the Arduino IDE.
I want to use ATmega2560 MC, but it manufactured only as surface mount IC which means i must make PCB to use it. I searched for a per-made kit and found Arduino Mega R3 board contains the desired MC. (It contains less I/O pins but that's OK for now). Can i implement my code (without any arduino code) in this board? or should i modify it to work with Arduino, also if it runs in the board will it be the same as normal IC or there will be differences in speed.
The MCU in the Arduino Mega2560 is a stock ATmega2560. There is no need to use the Arduino libraries to program it and no need to use the Arduino tools to communicate with it; avr-gcc and avrdude will work with it as normal. Note that you will need to select the appropriate programmer/protocol in avrdude for the bootloader programmed on the chip if you want to program it via serial rather than ISP.