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Old 02-06-2013, 09:48 AM #1
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Post Got my arduino uno today and a open USB to Serial (arduino)

Well today was fairly successful. I scored a new shop in Seoul, Yongsan Electronics mall that carries just about everything one needs for building their own LPM and or Portable laser.
Details will be up on the stickies for those members in S.Korea.

Anyways. I am converting an old Hioki 3803 that has a RS232C optical connection to a Arduino digital TX signal. I disconnected the IR diode and soldiered two jumpers, one to LED + and the other to ground.
The Positive jumper was added to TX and the ground went to ground on the
USB2SERIAL.

Here is the data that came off the Hioki at 9600baud.


Quote:
"‡R"‡R*>>
*>>
gv>>
gv>>
6v>>
6v>>
"‡R"‡RrrŸayrrŸayrrŸayr rŸayrrŸayrrŸayrrŸayrrŸayrrŸayr rŸayrrŸayrrŸayrrŸayrrŸayҶr>>
Ҷr>>
rŸayrŸayrŸayrŸayrŸayr ŸayrŸayrŸayrŸayrŸayrŸay rŸayrŸayrŸaygr>>
gr>>
v6vŸayv6vŸayVRRrŸayVRRrŸayrrŸayrrŸa yrrŸayrrŸayrrŸayrrŸayrrŸayrrŸ ayrrŸayrrŸayrrŸayrrŸayrrŸayrr >>
gYRgYRg&R‡Rg&R‡Rg&gRrŸay– RrŸayrrŸayrrŸayrrŸayrrŸayrrŸay rrŸayrrŸayrrŸaygҶvŸayҶvŸaygrvv>>
grvv>>
gŸayŸaygRvŸayRvŸaygrŸayrŸa yrŸayrŸayrŸayrŸayrŸayrŸ ayrŸayrŸayrŸayrŸayrŸayr Ÿay
rrŸay should read 4.0Vdc

I am trying to research how to decipher this raw data out. What to do... .

The idea is to put the SERIAL2USB into the hioki to bypass the RS232C and go directly to digital out.


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Last edited by Seoul_lasers; 02-06-2013 at 09:52 AM.
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Old 02-06-2013, 10:19 AM #2
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Default Re: Got my arduino uno today and a open USB to Serial (arduino)

Hmm, how about trying a different baud rate? If you still can't get sensible data, then it's probably encoded somehow and will be a pain to reverse engineer.
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Old 02-06-2013, 01:22 PM #3
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Wink Re: Got my arduino uno today and a open USB to Serial (arduino)

Quote:
Originally Posted by Things View Post
Hmm, how about trying a different baud rate? If you still can't get sensible data, then it's probably encoded somehow and will be a pain to reverse engineer.
hmm, did that... Seems to be some sort of IR code.
9600 is the correct baud setting.



Anyone who has an idea, feel free to let me know.
I ran out of time today on this.
Tomorrow afternoon I'm going to figure it out.
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---------------------------------------------------
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Old 02-06-2013, 06:17 PM #4
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Default Re: Got my arduino uno today and a open USB to Serial (arduino)

It is unlikely that the IR communication is direct RS232, but if it is you will need to invert the signal since RS232 is active low and TTL (on the arduino) is active high.
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Old 02-07-2013, 10:39 AM #5
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Lightbulb Re: Got my arduino uno today and a open USB to Serial (arduino)

Quote:
Originally Posted by MarioMaster View Post
It is unlikely that the IR communication is direct RS232, but if it is you will need to invert the signal since RS232 is active low and TTL (on the arduino) is active high.
You hit the nail on the head.
I tried both ways to create a data flow through the RX on the USB2SERIAL.
the pulses are too strong from the meter and reset the connection. I have to manually reset the USB2SERIAL.
Anyways.. I tried the tutorial from 2 sites. I was correct about the data flow only occurring at 9600baud. That is what the Hioki uses as a connection.
Unlocking RS232 serial comm on a multimeter

Also this one shows how to build the adapter using the USB2SERIAL.
AMB Laboratories DIY Audio ? View topic - DIY: hacking multimeters for RS232 data logging output.

Following the last tutorial, I used the arduino program to monitor the data flow. What I got was hexadecimal code. Useful code.

Just as this was working.. I noticed my meter indicating a low battery.
.... less than 6.7V... time for a new battery.

So the optical connection works fine, so long as you can decode the
hexadecimal. 1251FFE05078048
using a serial monitor program with a Hex decoder.
Fortunately there such a program for DMMs called QtDmm. It workes for Linux, MacOSX and windows.

I think these tutorials could work well for making data out connections for
DIY LPMs.
Ideally one should look at a microcontroller such as an Arduino or better, this way you could program the output into something that is a little more "universal" / easier to work with.
Converting an older DMM that uses serial is a pain in the butt... Also every DMM will have a different baud setting and coding....

Hopefully some of you out there might find this info useful.
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---------------------------------------------------
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Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 02-07-2013 at 02:27 PM.
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Old 02-08-2013, 03:43 PM #6
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Red face Re: Got my arduino uno today and a open USB to Serial (arduino)

Well, here are some pictures showing the adapter I made to decode IR signals from the meter.
I had quite a bit of fun with this today.
It sees just about every kind of IR signal, either from remote controls, cell phone screen (off/on) proximity sensors and RX data from a Opto isolated
DMM such as a Hioki DMM..

When a pulsed IR source is put up directly to the IR pin diode (right in front of the diode window), the TX data
strobes orange indicating a connection. In the Arduino program on serial monitor, the USB2SERIAL writes data onto the screen.
If all is going correctly you should see HEX code appearing. 12234FF003A... etc.
Adjust the baud rate accordingly. Chances are that most meters start at 9600baud and go from there up.

--- Now that I see it works with other meters, my DMM is transmitting an idle code 1 pulse per second. This is a bad sign as this means that the DMMs transmission part of the processor dosen't work at all. I tried this adapter on another meter and it fed back Hex that was readable on qtdmm and CoolTerminal.
1 problem down another to go. grr....
Attached Thumbnails
Got my arduino uno today and a open USB to Serial (arduino)-img_1163.jpg   Got my arduino uno today and a open USB to Serial (arduino)-img_1164.jpg  
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650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 02-08-2013 at 03:48 PM.
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Old 02-08-2013, 04:23 PM #7
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Default Re: Got my arduino uno today and a open USB to Serial (arduino)

I'm surprised you're getting anything at all just by hooking the phototransistor directly to the input of the converter module - you really should use a proper buffering circuit.
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Omnichrome 643 air cooled Ar/Kr ion 10mW 676.4nm 647.1nm 568.2nm 488nm 476.2nm (high hours)
Spectra Physics 127 >30mW 632.8nm HeNe | Uniphase 1.5mW 543.5nm GreeNe
Coherent Innova 90 argon ion water cooled ??W (got plasma, alignment in progress)
Coherent 60W 830nm water cooled diode brick | Shenhui Laser 40W 10600nm water cooled CO2

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Old 02-09-2013, 12:03 AM #8
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Default Re: Got my arduino uno today and a open USB to Serial (arduino)

Quote:
Originally Posted by MarioMaster View Post
I'm surprised you're getting anything at all just by hooking the phototransistor directly to the input of the converter module - you really should use a proper buffering circuit.
The Arduino board has been used in the manner I've been using on several tutorials.
What kind of buffer are you recommending.
Arduino - USBSerial

I followed the other tutorials and though one had a buffer it used a different USB2SERIAL board, the others using this Arduino do not use such a buffer. hmm...

Actually a little update. There is a similar project here using a 3 pin (IR photo transistor and an Arduino uno) It too doesn't use a "buffer" but rather the
digital inputs and a +3.3v pin.
http://learn.adafruit.com/ir-sensor/...intervalometer
I have now decoded my Sony remote using my adapter on 9600baud. It works.
Attached Files
File Type: pdf USB_serial04-LIGTH-sch.pdf (54.6 KB, 136 views)
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650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 02-09-2013 at 03:29 AM.
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