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Egg Timer TRS and Tera Term

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dratliff

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Hello all,

I'm trying to connect an Egg Timer TRS to my laptop (Windows 10) to do a master reset. I downloaded Tera Term, but I'm unable to select the serial port. It's grayed out and won't let me select it. I tried to set up the serial port, and the port number choice is grayed out. Has anybody run into this before?
 

dratliff

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I use Windows 10 and could not get Tera Term to run on my system. I switched to Putty and everything worked great.
I tried Putty just now, I get an error message that it can't open the serial port. I used device manager to see what port the cable is in (port 2), and changed the port name to COM2 in Putty, no joy.
 

mbeels

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I've used both Putty and Tera Term on Windows 10 and each worked alright. What are you using for a serial adapter?
 

dratliff

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The Baud rate is set to 9600, which I believe is correct. The problem I'm having is when I open Tera Term, it's in the TCP/IP mode and won't let me select serial. I'm using the USB cord from Egg Timer with the blue end. I think the serial adapter is part of that cord. And please don't assume I know anything about this, I'm just using the words. I was able to do all of this on my last computer, this is the first time I've tried it on this machine.
 

mbeels

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Did you plug in the USB serial adapter before starting the program? Try it in this order:
1) plug in the USB serial adapter
2) start the TeraTerm software.
 

dratliff

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Yes sir, did that. I've tried every USB port on my computer, cord first and Tera Term first. Nothing works. I'm at a loss, this is apparently beyond my knowledge.
 

Voyager1

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I’ve used TerraTerm before, but I use CoolTerm now with the Eggtimer gear.
 

mbeels

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It's strange that you can see Com 2 in your device manager, but can't access it with Putty or TeraTerm. Just curious, if you remove the USB to serial adapter, does the Com port in your Device Manager go away? Did windows install drivers and setup your device when you first plugged it in? Does your Win 10 user account have admin privileges? I wonder if there are some account settings that are restricting your access to some hardware.
 

Tobor

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If you know anything about Linux, I would suggest booting your laptop, via a thumb drive, with an Ubuntu (Link) or Linux Mint (Link) Live CD.
You can use Yumi (Link) to write the Live CD image to the thumb drive. PuTTY is the only one of the three term programs listed above that runs on Linux.

Linux is the best way to circumvent Windows 10 issues.
 

cerving

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Windows will tell you that COM2-COM4 are "in use", even though they are not. Go ahead and override it. Both Teraterm and Putty work fine with Windows 10, however I think Putty is easier to use.
 

H. Craig Miller

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What I found in using Putty with Windows 10 is that the com port was not correctly identified. So, I simply selected the lowest com port and tried it, then, if it didn't work, I tried the next one. My system uses Com 3, so the third time was the charm.
 

dratliff

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Happy Thanksgiving! Thanks to all for trying to help. I can see the cord in device manager, it goes away when I unplug it. Chris, how do I override Windows?

I downloaded Cool Term, when I open it it tells me there are no serial ports on my computer. Not sure what manner of sorcery that is, there are 3 USB ports that all seem to work fine with other devices.
 

cerving

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Happy Thanksgiving! Thanks to all for trying to help. I can see the cord in device manager, it goes away when I unplug it. Chris, how do I override Windows?

I downloaded Cool Term, when I open it it tells me there are no serial ports on my computer. Not sure what manner of sorcery that is, there are 3 USB ports that all seem to work fine with other devices.
USB devices are by nature dynamic, yes it will disappear from Device Manager if you unplug it. When you plug it it, Windows looks to see if there's a driver loaded for that particular device, if it can't find one explicitly for that device it will either use a generic class driver or flag that device as potentially unusable.

If you have not done so already, install the Prolific PL2303TA driver from their web site, with the USB cable UNPLUGGED, then plug it in. Go into Device Manager, right click on the settings, go to the Advanced tab, and change the COM port. I recommend using COM2 through COM4, if Windows complains about it being "in use" just overrride it.
 

Maxwelljets

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I tried Putty just now, I get an error message that it can't open the serial port. I used device manager to see what port the cable is in (port 2), and changed the port name to COM2 in Putty, no joy.
This initially happened to me multiple times, and then it suddenly stopped happening. I had changed nothing about the setup, so I honestly have no idea why it wasn't working at first. Perhaps rebooting would help?
 

dratliff

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USB devices are by nature dynamic, yes it will disappear from Device Manager if you unplug it. When you plug it it, Windows looks to see if there's a driver loaded for that particular device, if it can't find one explicitly for that device it will either use a generic class driver or flag that device as potentially unusable.

If you have not done so already, install the Prolific PL2303TA driver from their web site, with the USB cable UNPLUGGED, then plug it in. Go into Device Manager, right click on the settings, go to the Advanced tab, and change the COM port. I recommend using COM2 through COM4, if Windows complains about it being "in use" just overrride it.
The driver did the trick, it's working fine now. Thanks Chris! I'll buy you a beverage if I ever get to meet you. And thanks to everyone who tried to help, same offer stands!
 

cerving

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Great! Windows loads the generic USB-Serial class driver if you don't install the Prolific one... and it does not work. Been there, done that...
 

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