[CoolTerm-Betas] CoolTerm and USB HID input to Arduino

[Roger Meier]

Hi Charles,

Can you share some information for these RFID readers you are using? Like a
datasheets, schematic, etc.? That would help in figuring out the possible
options to the problem you are trying to solve.

Roger

On Mon, May 6, 2024 at 8:14 PM Lief Koepsel <lkoepsel at wellys.com> wrote:

> I would suggest thinking of it a bit differently. You are on the right
> track…just to confirm, I’m assuming you mean an Arduino Uno R3…is this a
> receive only protocol?
>
> 1) There is one USART port on the Uno (serial port) and there is an SPI
> port which can act as a serial port. This is if you wish/need to use a
> specific serial  protocol.
> 2) How fast is the serial protocol? If fairly slow, you could create a
> serial port from any one of the Port D or Port B pins
> 3) The last part sending the data, depends on how you want to connect to
> the board and the speed of transfer.
>
>
> There are a lot more questions than answers…
>
> Lief
>
>
> > On May 6, 2024, at 7:17 PM, Charles Harris <charles7 at slingshot.co.nz>
> wrote:
> >
> > Hi
> >
> > Thanks for add.
> >
> >
> > I have 2 or more USB stick type RFID readers.  These readers use USB HID
> to automatically input tag reference data, on activation of a tag, into a
> spreadsheet on Linux Mint.  They all have the same pid vid and no unique
> reference for each device.  These work well but they cannot be
> differentiated between readers.
> >
> > From what I have seen of CoolTerm it maybe able to help with ID problem.
> >
> > Is it possible to hook each rfid device to pins in an Arduino, each
> device with its own pins.   This allows an ID procedure.  USB has 4 pins,
> the power pins would be connected to power and ground. That leaves the 2
> data pins, could 1 only be used for  data transfer?
> >
> > The rfid device would when activated with a tag, automatically places
> the tag data into SD data base for that reader only. Multiple devices =
> multiple columns in SD data base.
> >
> > Then say periodically (once a minute?) the information is sent from SD
> card to PC or laptop open spreadsheet and in an adjacent column in
> spreadsheet it places an ID that was used by the reader, being the pin
> number or similar ref of Arduino.  This allows for the spreadsheet to
> recognize which reader supplied tag number .
> >
> > On sending of the data to the pc, the existing data in SD card would be
> deleted ready for next read.
> >
> > On the USB there are 4 pins  + and -  and 2 data.   How would these be
> connected physically.o
> >
> > So the end result is getting the tag read from rfid device into Arduino
> (not as per normal into the pc spreadsheet).    Then giving read data and
> ID and send on to pc.   What option would be the best here, and simplest,
> ethernet, wifi, bt?
> >
> > Hope you can understand what I am trying to outline.
> >
> > Charles
> >
> >
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