Thursday, December 5, 2013

Build a USB to Fluke IR189usb (Infrared Radiation) Interface

Fluke 189 can be connected to a computer.
That allows easily to setup communication with such a device and automate measurements.
Fluke 189 needs Fluke IR189USB cable. This is a simple Infra-red interface device.

Home made Fluke IR 189 USB Cable Assembled

IR communications have advantages over wired serial connections. These advantages include: (a MICROCHIP AN758 clipping)

. No connectors to wear out
. IR transceivers are smaller than common serial connectors
. Total immunity from Electromagnetic Interference (EMI) and ower supply noise
. Very reliable, IR data is protected from errors using a 16-bit CRC algorithm (not applicable to this case)
. Easy availability, many mobile devices have IR ports but no serial ports

Testing & Prototyping


Most of a parts are recycled

Digital Camera Baterry Case, Semiconductors from Disassembled the PCB, USB Cable From Broken USB Mouse
IR LED/Photo TR Holder from Broken DC Adapter Jack, a piece of acrylic, a piece of cloth, etc.






Ta-da

Using the Multimeter to Logging Data






Schematic

Here is a pretty simple schematic of the circuit.

Parts:
ST-7L,ST3811 : Photo Transistor(Diode) or equivalent
EL-7L,SI3317 : Infrared Emitting Diodes(IRED) or equivalent
LM393 : Comparators or equivalent(I had a Prototyping with LM319N)
FT232RL,MCP2200,PL2303: USB UART IC or equivalent
For the rest, it is an usual thing


Photo Transitor(Diode) Symbol

This is Genuine IR189Usb, Usb Cable For Fluke-18X, 28X DMM's
It’s not spectacular, and there’s no High-Tec. something. But The prices are a little high

Fluke Item# 2428108

Genuine IR 189 USB PCB
FlukeView® Forms Documentation Software by Fluke

Download

Useful Links

32 comments:

  1. Very nice, I'm thinking to also build one for myself
    Only the software is too expensive :-(

    ReplyDelete
    Replies
    1. Yes, The prices are a little high
      You may need to Make your own Monitoring Software,
      Here's some Infomation
      https://docs.google.com/file/d/0BxD05xrbn-k6dnpZcmhTZ2hMREU/edit

      I wish you good luck.!!

      Happy New year~

      Delete
  2. What is the part # for IC1B?

    ReplyDelete
    Replies
    1. Hi,
      This is LM393N Dual Differential Comparator.

      Delete
  3. Hi, your design works pretty well with my Fluke 187 but I can't make it work with Fluke 289. I tried changing the serial speed but without any change. Fluke 289 responded by few RX led flashes but not detected by ViewForms...

    Does everyone make it work with Fluke 287 or 289 ??

    Thank you.

    ReplyDelete
    Replies
    1. Hi,
      that´s too bad!,
      In principle, the 287 is same structure.
      There's no difference between 189 and 287
      Look at the communication or IR something on manual

      good luck!
      Happy New year!!

      Delete
    2. Hi,
      I spend 5 hours with this and YES, It's working with both DMM now.
      I changed voltage divider for inverted inputs of the op-amp to the 3.2 Volts and change resistor R4 value to 470 ohm. Now I have real square-wave from phototransistor without any noise.

      Thank you!

      Delete
    3. Hi,
      Good news, Thanks for sharing,
      Don’t forget the past, learn from it. Happy New Year.

      Thanks.

      Delete
  4. I'm building this prototype. I've got a fluke 289. I should change ONLY r4 from 1k to 470ohm ? Thank you so much

    ReplyDelete
    Replies
    1. Hello Daniele
      I do not have a 289, It is then difficult to help you..
      See Above Anonymous Solution..

      Good Luck!~

      Delete
  5. Ok I'll try. Thano you for helping.

    ReplyDelete
  6. Hi,
    Thanks mate!! Your circuit is working just fine with my Fluke 289, without any modification(except that I used ready FTDI232 usb to serial board- 2GBP). VCC for LM393 has to be 3.3v. Thanks!!!!

    ReplyDelete
  7. This comment has been removed by the author.

    ReplyDelete
    Replies
    1. Hi,
      I built a prototype of a project to upgrade the firmware 287. When trying to connect the TX LED flashes (test pilot ) , but unfortunately photodiode did not react to the test FLUKE communication software to update the firmware . I would add that I've tried with two FTDI chips , and every time I try to communicate with the 287 is between pin 1 FD232 and the ground is still constant 5V. Is anyone able to help on this thing ?

      Delete
  8. Try different diode. I used two diode of woman hairdryer ( used to switch off it when you leave it on the desk )

    ReplyDelete
  9. There is no damage to the LEDs because I checked it with the voltage source and the camera. I wonder if by chance the software itself is not blocking the transmission.
    Well, unless I have something wrong with your setup VCP?

    ReplyDelete
    Replies
    1. hello Paul N,
      How do I know Working properly?, Let me know
      What's "VCP", by the way?

      Delete
  10. It's Vitrual COM Port from FTDI

    ReplyDelete
  11. Some notices about your schematic...
    1. You need exclude R5 resistor from RXD line. In FT232R all input pins are pulled to VCCIO via internal 200kΩ resistors.
    2. In R2/R3 divider I suggest you change R2 from 12K to 3K. That will give you 1V reference voltage on inverted inputs LM393. I not understand why you choose VCC/2 reference voltage. That make your scheme unstable, ecpessially when you use photodiode with low photocurrent (2-10 μA). Photodiode have internal capacitance that can be reduced only with high backward voltage. With 5V VCC not easy to pick up right value for R4. If value for R4 will be little bit higher than required value, than you will have enough amplitude on output from ST-7L (in direct input 5 on IC1B) for recognizing signal presence, but all short peaks will be pulled up to high level and can not be recognized by IC1B. When R4 will be lower than required, you will be have very clear signal from ST-7L but highest level will be below your reference voltage (VCC/2) on input 6 IC1B and signal form ST-7L will be not recognized yet!
    If your reference voltage will be near 1-1,5 V that you will be able receive very clear signal from ST-7L with high level above 1V and no any missed "bits" on RX line or unstable connection. I use R4 just ~270 Ohm for chip BL-L512PD photodiode.

    Regards, Sergey.

    ReplyDelete
  12. ...my sorry. Need change not R2, R3 to 3K..

    ReplyDelete
  13. Eu consegui atualizar o meu Fluke 289 só mudei o valor de R4 para 380r e eliminei o R1, funcionou perfeitamente.

    ReplyDelete
  14. utilizei uma placa igual esta https://electrosome.com/wp-content/uploads/2014/10/ft232-uart.jpg

    ReplyDelete
  15. Question on the scheme.
    By the chip FT232RL through two resistance R6, R8 connected two photodiodes?
    What is the photodiodes?

    ReplyDelete
    Replies
    1. Hello,
      It's common LED
      LED is use for Visual Effect of Transmit/Receive data

      Delete
  16. Hi.
    When connected to the multimeter, the phototransistor to be right or left? If you look on the side of the optical socket meter.

    ReplyDelete
    Replies
    1. Hello,
      Thank you for your consideration
      I did modifications.
      See the following for more information.
      https://3.bp.blogspot.com/-YYEFk-yNmkE/V2tWs4ccYbI/AAAAAAAAEPg/V0xdFPY-iOAEfbCekVyex9TiQRwLaocTgCLcB/s1600/P9110041-horz.jpg

      Delete
  17. Hi Mate,

    Do you know if this solution would work for the Fluke 789 Process Meter

    ReplyDelete
    Replies
    1. Hello,
      In principle, the 789 is same structure.
      it would all work out

      http://uk.rs-online.com/web/p/multimeter-software/3850599/
      Compatible with Fluke FL183, 185, 187, 189, 287 & 289, 789, 1550B, 1653 , 1653B 1654B, 53-2B & 54-2B

      Delete
  18. thank you so much.. very helpful..
    I'm trying to log temperature from fluke 287 into my custom software..

    ReplyDelete
  19. hi bro!! this article is super. thanks, i found it because i'm research to make the OC4USB cable to my 196c. i will appreciate so much any info. see u.

    lanchas.gaston@gmail.com

    ReplyDelete