Is the DE-5000 software useful?

[JDubU]

The signal on the Rx input of your serial to USB converter board should look like the scope image below:

Note the readouts along the bottom left.  The polarity of the signal is normally high.

[Calambres]

I do not see such pulses in my scope. The ones I see are AC only pulses with a few millivolts.

Something's wrong with my UART and/or phototransistor 

The UART board measures 4.23V in the 3.3V output so I suppose it is not working properly but I've read of many of these boards behaving this way.

[Calambres]

PROBLEM SOLVED!   

As I didn't get any scope readings in the 3 or 4 volts magnitude as in your picture above (the pulses I got were in the millivolts range) I began to suspect the phototransistor was not working at all. In fact I ordered two L53P3C from this ebay seller (caveat emptor). None of them seem to work. I went to my local components store and bought a BPW77NB. As soon as I put it in the UART board I immediately noticed that, when attached to the DE-5000 in "PC" mode, the RX LED started flashing once every second. Now the scope reading is identical to that of JDubU's two posts up.

Now it works like a charm, providing I set up a 470R pullup resistor as JDubU stated some posts ago.

Thanks a lot to everyone helping! 

[djeans]

you need to add a resistor, 470 - 1k, then it will work with the most of the phototransistors. Check it with your ocilloscope.
Connect OUT to your USB RS232's RX pin
Connect to 5 V / 3.3 V (depneding on your setting on the RSR232 USB converter)
Connect GND to GND

[coromonadalix]

I would add    the cp2102  sometime doesn't work well in recent os'es  like win10,  some prolific chipset too

I would use  ch340 or ftdi based  usb uart boards ...

but  great work 

[pepe10000]

Hello.

I wonder if someone would be so kind as to post a screenshot of the DE-5000's communications via putty:

https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

I can't get my newly purchased DE-5000 to communicate with its software and I've tried everything I can think of, from using various values of Pull-Up resistors (even no resistors), different operating systems (WinXP-7-10), different computers, different IR receivers, different USB-TTL adapters, etc.

I put an image of what I captured in the PuTTY.

Unfortunately, my oscilloscope is analog and very old, but from what little I've been able to see the waveform looks a lot like some screenshots on the forum.

Thanks in advance and greetings.

[djeans]

Hi, here it is how it does look with 9600bps 8n1. similar to yours. Therefore I'd assume you dont have a hardware problem, maybe you can uplaod a youtube video?
Dont forget to press on the play button in the software ;-)

[pepe10000]

Hello.

Thanks for the catches.

It works now, the problem was:

Dont forget to press on the play button in the software ;-)

He didn't know he had to hit the play button.

I had been trying for many days, but it never occurred to me to press it.

Going to old does not compensate,     

I am very grateful for the help, this forum is great.

All the best.

[djeans]

hahah, thanks for the (honest) feedback. 
this happened to me as well as it is not self explanatory, therefore I guessed it might be same for you.
have fun (for whatever you need it, I am not sure why I build it and if I ever will need it  )

[pepe10000]

Hello.

You're welcome.

I certainly don't plan to use the PC connection too much, normally I'll use it in portable mode, but I wanted to know what was the matter that it worked for everyone and not for me,     

A photo of the inside of the adapter already working.

Thank you very much and greetings.

[eevblogger88]

https://sigrok.org/wiki/DER_EE_DE-5000

Sigrok supports it.

While that is true, we currently unfortunately have no one working on a GUI for this device class. This leaves only sigrok-cli to query device data, which means that there's no graphical display and it's up to the user to use whatever graphing tool they want to use. While flexible, it's probably not what fishandchips wants/needs.

This may of course change in the future but until someone volunteers, that's the status quo.

Update:
https://sigrok.org/wiki/SmuView

Hope my DE 5000 will work with it under MacOS, will try it next week with the "official" usb adapter

[buuak00]

I added a 10k pull-up resistor and it works.

CP2102 driver installation is difficult.