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TT USB not compatible with Windows 10

 

So.... I just purchased a TT4 and accessory cables.? After installing drivers, I connected the TT USB cable to my computer (Windows 10). Looking at the Device Manager for the COM port, I get the message "PL2393HXA PHASED OUT SINCE 2012. PLEASE CONTACT YOUR SUPPLIER." Installing the latest drivers from Prolific didn't help either.

Has anybody had any success getting this to work with Windows 10?

Thanks,

Matt


Re: TT4 No Longer Detecting Carrier

 

The yellow CD LED was not flashing?and I wasn't seeing decoded packets.

I just reset the TT4 to base configuration and it's working again, so #shrug?

Thanks for the response. Issue seems to be fixed now.


Re: TT4 No Longer Detecting Carrier

 

When you say it "Stopped detecting carriers" do you mean that the yellow CD LED is not flashing, or that you are not seeing decoded packets??

73,

Allen AF6OF


-----Original Message-----
From: adamback42@...
To: [email protected]
Sent: Fri, Aug 6, 2021 10:44 am
Subject: [TinyTrak] TT4 No Longer Detecting Carrier

Super fun getting into APRS. I had a TT4 set up for about 2 weeks with a Kenwood TM-231A successfully operating as a digipeater. About two weeks ago I started using APRX as the digipeater and iGate, with the TT4 in KISS mode.

A few days ago, the TT4 stopped detecting carriers.

Nothing in the config changed. I tried rebooting both the TT4 and the pi that is running APRX. Nothing. If I unplug the audio jack, I can hear the packets coming in and the radio is properly beaconing with the TT4 and APRX. My packets are decodable, because they are being accepted by a different iGate.

RXAMP is properly calibrated and the CDMODE is tones.

What else would you try?


TT4 No Longer Detecting Carrier

 

Super fun getting into APRS. I had a TT4 set up for about 2 weeks with a Kenwood TM-231A successfully operating as a digipeater. About two weeks ago I started using APRX as the digipeater and iGate, with the TT4 in KISS mode.

A few days ago, the TT4 stopped detecting carriers.

Nothing in the config changed. I tried rebooting both the TT4 and the pi that is running APRX. Nothing. If I unplug the audio jack, I can hear the packets coming in and the radio is properly beaconing with the TT4 and APRX. My packets are decodable, because they are being accepted by a different iGate.

RXAMP is properly calibrated and the CDMODE is tones.

What else would you try?


Re: MTT4BT- Will not power with USB 2.5 Cable plugged in.

 

Thank you for the research and fix! ?


Looking forward to moving forward with my project.?

?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

Tom,

Sadly, I think that Allison unsub'd us!

Allen AF6OF


-----Original Message-----
From: kc9ony <kc9ony@...>
To: [email protected]
Sent: Fri, Jul 23, 2021 12:11 pm
Subject: Re: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

Welcome to the group Allison!
I don't have a specific answer for you, but just to point out that there are
a lot of good folks here with knowledge, as you have found already.

73,
Tom
de KC9ONY


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

Welcome to the group Allison!
I don't have a specific answer for you, but just to point out that there are
a lot of good folks here with knowledge, as you have found already.

73,
Tom
de KC9ONY


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

¿ªÔÆÌåÓý

Check Device Manager. If the cable shows to be a Prolific cable, roll back the driver to 3.2.0.0. A lot of ¡®Prolific cables have fake Chinese chips in them. The latest Windows drivers cause those chips to not work. Using the older driver does work. Go to www.Millie.com for more info and to find the driver.?

Jardy Dawson WA7JRD

Message sent by....Oh look!! Pretty lights!!


On Jul 22, 2021, at 13:45, Allison Hollier via groups.io <alliegirl710@...> wrote:

?
Well perhaps that is the issue.? I bought a brand spanking new USB to Serial cable off Amazon, which fits from a hardware perspective, but now that I'm looking at it, it says it's an adapter, so it's probably not a true serial cable.? Byonics may be the way to go.

Thank you for the feedback. Allen.

Allison, KG5BHY

On Thursday, July 22, 2021, 01:53:41 PM CDT, vhsproducts via groups.io <vhsproducts@...> wrote:


What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

Allison,

Your Amazon unit is probably more a "true serial" than the Byonics cable. The Byonics cable has pins 2 and 3 reversed in respect to that of a normal serial port. That is because the standard for GPS receivers is "backwards" and we want the MT-8000 FA ( And all the Byonics products for that matter) to be plug and play compatible with the Byonics and other GPS receivers ( Plain, old fashioned 5 Volt NMEA GPS receivers are hard a little hard to come by these days as a practical matter) You can build an adapter that brings the ground, tx and rx signal out of your Amazon converter.

The Byonics cable you would want is the USB-TT3 cable, which you can find here:?http://byonics.com/cables. Since it scavenges power from the USB port to run the low power part of the MT-8000 for programming, the amplifier is not powered up. This? will prevent a number of possible complications during programming, and save having to have a dummy load or antenna for programming. Power is bled into the serial connector from the pin ordinarily used to power an outboard serial GPS connected to the transmitter. Anyway, at $20.00 bucks ( And don't forget to download the free USB Drivers from the website!) The USB-TT3 cable makes things much easier.?

FYI, I am the manufacturer of the Micro-Trak product line from Byonics, and I think you will find this board to be an excellent resource for problem solving and applications that are often far outside my personal knowledge base. ( Also, there are a number of people here that are just really damn smart!)?

Welcome aboard!

Allen AF6OF

-----Original Message-----
From: Allison Hollier via groups.io <alliegirl710@...>
To: [email protected] <[email protected]>
Sent: Thu, Jul 22, 2021 1:45 pm
Subject: Re: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

Well perhaps that is the issue.? I bought a brand spanking new USB to Serial cable off Amazon, which fits from a hardware perspective, but now that I'm looking at it, it says it's an adapter, so it's probably not a true serial cable.? Byonics may be the way to go.

Thank you for the feedback. Allen.

Allison, KG5BHY

On Thursday, July 22, 2021, 01:53:41 PM CDT, vhsproducts via groups.io <vhsproducts@...> wrote:


What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

Pay no attention to the man behind the curtain.
The question you? asked is one that has been asked on and off list, in various ways for various Byonic products.

I am not not if the party of "there is no such thing as a stupid question" - yes there is.
A stupudcquestion is one you alreadynknow the answer to.
EXAMPLE:
?My first car purchase:? After I told the car dealer the car he showed me was too expensive, hevasked me "How much do you 'want' to pay for the car?"? I said, 'Now that's a stupid question, I don't 'want' to have to pay for the car."? He sad, "You're right."

Rob KB8RCO


On Thu, Jul 22, 2021 at 16:43, Allison Hollier via groups.io
<alliegirl710@...> wrote:
Gee, anything else you'd like to fuss at me about?? I feel the love already.

Allison Hollier
KG5BHY


On Thursday, July 22, 2021, 01:46:20 PM CDT, Joe Sammartino <jsammartino@...> wrote:


On Thu, Jul 22, 2021 at 11:43 AM, <alliegirl710@...> wrote:
I'm not sure if anyone "still" monitors this group
That's a curious statement since you just joined the Group this morning. Yes it's monitored and yes, it's active.

I'm sure you will have some member provided input quickly.

And, please, always sign your messages.

Regards,

Joe, N2QOJ - Group Owner


Re: Micro-trak 8000 FA config software not recognizing tracker..

Allison Hollier
 

I'm not using the Byonics adapter, but I'm about to go purchase.? This will prove to be quite handy information shortly.? Thank you, Robert.

Allison Hollier
KG5BHY

On Thursday, July 22, 2021, 02:04:32 PM CDT, Rob Giuliano via groups.io <kb8rco@...> wrote:


An additional comment is that whe using the Byonics cable, it powers the MT-8k all the time.
The configuration applciation requires a power cycle to get to the bootloader.

If you unplug the USB cable form the computer and plug it back in, you have 2 probable issues:

1. If externally powered, you are unplugging the main power, buyt the MT-8K still has power from the Byonics adaptor, so the micro processor (uP)does actually reboot to get to the bootloader.

2. The computer's COM port diappears when you unplug it from the computer, so the configuration application gets lost.
??? The computer takes longer to recognize the USB device and install the drivers to create the COM port than the MT-8K takes to get through the initialization.

The best way to handle this is to disconnect the MT-8K from the USB devie at the MT-8K DE9 connector.
This keeps the computer COM port active and disconnects power from the uP and allows it to 'reboot'.

Again, this is only true with the Byonics USB adaptor which powers the MT-8K through pin 4 of the DE9 connector.

Robert Giuliano
KB8RCO



On Thursday, July 22, 2021, 2:53:41 PM EDT, vhsproducts via groups.io <vhsproducts@...> wrote:


What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

Allison Hollier
 

Well perhaps that is the issue.? I bought a brand spanking new USB to Serial cable off Amazon, which fits from a hardware perspective, but now that I'm looking at it, it says it's an adapter, so it's probably not a true serial cable.? Byonics may be the way to go.

Thank you for the feedback. Allen.

Allison, KG5BHY

On Thursday, July 22, 2021, 01:53:41 PM CDT, vhsproducts via groups.io <vhsproducts@...> wrote:


What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

Gee, anything else you'd like to fuss at me about?? I feel the love already.

Allison Hollier
KG5BHY


On Thursday, July 22, 2021, 01:46:20 PM CDT, Joe Sammartino <jsammartino@...> wrote:


On Thu, Jul 22, 2021 at 11:43 AM, <alliegirl710@...> wrote:
I'm not sure if anyone "still" monitors this group
That's a curious statement since you just joined the Group this morning. Yes it's monitored and yes, it's active.

I'm sure you will have some member provided input quickly.

And, please, always sign your messages.

Regards,

Joe, N2QOJ - Group Owner


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

SPAM


On July 22, 2021 11:46:19 AM PDT, Joe Sammartino <jsammartino@...> wrote:
On Thu, Jul 22, 2021 at 11:43 AM, <alliegirl710@...> wrote:
I'm not sure if anyone "still" monitors this group
That's a curious statement since you just joined the Group this morning. Yes it's monitored and yes, it's active.

I'm sure you will have some member provided input quickly.

And, please, always sign your messages.

Regards,

Joe, N2QOJ - Group Owner


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

An additional comment is that whe using the Byonics cable, it powers the MT-8k all the time.
The configuration applciation requires a power cycle to get to the bootloader.

If you unplug the USB cable form the computer and plug it back in, you have 2 probable issues:

1. If externally powered, you are unplugging the main power, buyt the MT-8K still has power from the Byonics adaptor, so the micro processor (uP)does actually reboot to get to the bootloader.

2. The computer's COM port diappears when you unplug it from the computer, so the configuration application gets lost.
??? The computer takes longer to recognize the USB device and install the drivers to create the COM port than the MT-8K takes to get through the initialization.

The best way to handle this is to disconnect the MT-8K from the USB devie at the MT-8K DE9 connector.
This keeps the computer COM port active and disconnects power from the uP and allows it to 'reboot'.

Again, this is only true with the Byonics USB adaptor which powers the MT-8K through pin 4 of the DE9 connector.

Robert Giuliano
KB8RCO



On Thursday, July 22, 2021, 2:53:41 PM EDT, vhsproducts via groups.io <vhsproducts@...> wrote:


What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

What kind of a USB-to-Serial cable do you have, a Byonics programming cable or a standard USB-to-serial cable? The Byonics cable will power the MT-8000FA during programming to avoid problems with the high power RF, but more importantly, it has the DB-9 wired as a null modem. If you have a generic USB-serial converter, you will need a null modem cable or converter to make it work, and of course, you must have the USB drivers for either of the devices installed on your PC to establish communications.?

The MT-8000 FA needs to use an older Configuration program, you can download it here:?https://web.archive.org/web/20100402094618/http://www.byonics.com/microtrak/mt8000fa_v2.0.zip

Allen AF6OF


-----Original Message-----
From: alliegirl710 via groups.io <alliegirl710@...>
To: [email protected]
Sent: Thu, Jul 22, 2021 9:39 am
Subject: [TinyTrak] Micro-trak 8000 FA config software not recognizing tracker..

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: Micro-trak 8000 FA config software not recognizing tracker..

 

On Thu, Jul 22, 2021 at 11:43 AM, <alliegirl710@...> wrote:
I'm not sure if anyone "still" monitors this group
That's a curious statement since you just joined the Group this morning. Yes it's monitored and yes, it's active.

I'm sure you will have some member provided input quickly.

And, please, always sign your messages.

Regards,

Joe, N2QOJ - Group Owner


Micro-trak 8000 FA config software not recognizing tracker..

 

I'm not sure if anyone still monitors this group but I have a Tiny Trak that is not being recognized by the software.? I have isolated every usb port I have and labeled them accordingly.? This is not a comm port issue, it's just not recognizing the software.? I've tried rebooting, , restarting the software, rebooting with the cable attached to the port, you name it.? NOTHING works.? This is the first time I've tried to do this, meaning this is the first time this computer has been used to access the tracker and I also have a brand new serial to USB cable.? It's probably not the cable ss it's brand new.? WHAT would you try?


Re: MTT4BT- Will not power with USB 2.5 Cable plugged in.

 

Brian,

I received your MTT4BT today. It appears that the corruption of the TT4 ATMEGA controller stemmed from the 2.5mm PORTA jack getting a bit bent and having intermittent contact. The programming cable probably just got tugged a bit too hard. Anyway, I replaced the TT4 chip and the jack and all is well. I had it on the air a few minutes ago ( Your Call sign) and it is sending positions and digipeating. I will be sending it back tomorrow. Sorry about the difficulties!?

73,

Allen AF6OF


-----Original Message-----
From: Allen Lord <allen@...>
To: [email protected] Group Moderators <[email protected]>
Sent: Sat, Jul 17, 2021 5:42 pm
Subject: Re: [TinyTrak] MTT4BT- Will not power with USB 2.5 Cable plugged in.

Brian,

Well, we do our best not to send out units that are bad right out of production :) I look forward to getting your unit and I will make sure it is ship-shape and Bristol fashion.?

73,

Allen

On Sat, Jul 17, 2021 at 5:15 PM <toy4trax@...> wrote:
Allen,
Very much appreciate your offer. I'll get it out to you next week!

The odds that the issue is my fault is much higher, than it being a lemon. I did my due diligence at each step to prevent magic smoke, so I definitely appreciate an expert taking a look.

-Brian
KG7KHL


Re: Negative temperature in Celcius

 

It may be due to loss of precision in the arithmetic used by Byon and not round off. It could be both. Without seeing the code employed in converting temp input to ascii for embedding in the aprs packet it is hard to tell. I suggest that there is likely an arithmetic algorithm within the microprocessor that would alleviate this. I could help but I don't have the code.
regards
rich painter


On Tue, Jul 20, 2021 at 8:41 PM Rob Giuliano via <kb8rco=[email protected]> wrote:
So it appears the issue was most likely rounding.? Now that the temperature is "significantly below 0" it is displaying as below zero.

Glad it is working!

Robert Giuliano
KB8RCO



On Tuesday, July 20, 2021, 9:17:23 PM EDT, py5lf_ <py5lf@...> wrote:


Robert
Today morning the temperature reaches negative temperature in Celcius , so my question was answered;

20/07/2021 06:18:02-03:00:?PY5LF-13>APTT4,PP5CRE-15,WIDE1*,WIDE2-1,qAR,PP5APR-10:WX Davis,FTM100DR,5W,GP6,Ext.Temp.:-3C,25F,DGP=OFF

TT4 works very nice !?
Thank you?

Em qua., 30 de jun. de 2021 ¨¤s 01:06, Rob Giuliano via <kb8rco=[email protected]> escreveu:
Wow, what are all those boards in your picture?

As for the negative numbers, that would be a question for Byon.

Going back through the data, the lowest temperature I saw was 30F, which showed as 0C.
In theory, this could be resolution and round off error.? I didn't see any temperatures below 30, which would be 'even more negative'.

Do the telemetry parameters match your current telemetry output?
Aprs.fi shows your telemetry data as:
?? Power Supply???????? PA
?? Solar Panel P.1?????? SP1
?? Solar Panel P.2?????? SP2
? Battery 1????????????????? B1
? Battery 2????????????????? B2

data with path elements removed???????????????????? PA, SP1,SP2,B1,B2 ,digital
2021-06-29 21:34:13 EDT: >APTT4:T#059,124,000,000,128,127,00000000
2021-06-29 21:38:06 EDT: >APTT4!2529.15S/04913.13WrWX?Davis,FTM100DR,5W,GP6,Ext.Temp.:3C,37F,DGP=OFF
2021-06-29 21:38:30 EDT: >APTT4@.../04913.13W_079/009g015t040r000p018P004h70b10207.DsVP

Just as an experiment, you can try the following settings for telemetry:
??? TELREAD FALSE???????? This will send raw bit values from Analog to digital converter
??? TELHIRES TRUE ? ????? This will? scale the voltage to 0 - 5V will be 0 to 999 counts
??? TELVOLT TRUE??????????? PA will remain TT4 input voltage
??? TELTEMP TRUE?????????? SP1 will be the raw bit value for the temperature sensor
????????????????????????????????????????? The other values will shift right and you will no longer read B2
The millivolt reading is in deg K (x10).
So if the analog to digital converter reads about 500, that will be about 2.5V (2500mV)
? to equate to 250 K or (250 - 273.15)? = -23.15 C.
Taking a step closer to your value:? 539 / 999 * 5 = 2702? or 270.2 K
?? 270.2 - 273.15 => -2.88 C

Then you could verify the output of the status message vs the telemetry data and see if it really is negative, or just rounding off poorly.

Robert Giuliano
KB8RCO



On Tuesday, June 29, 2021, 8:05:52 PM EDT, py5lf_ <py5lf@...> wrote:


<Snip>
Robert
LM335DZ encapsulated?to put outside ...


Livre de v¨ªrus. .

Em ter., 29 de jun. de 2021 ¨¤s 20:50, py5lf_ via <py5lf=[email protected]> escreveu:
Robert
This temperature comes from the LM335DZ put outside my shack , using a shielded cable .
Also I have a Davis Vantage Vue connected to this TT4.
But the main point is this ; TT4 doesn't?show a negative value on Celsius . After reaching zero , the value stays the same , while the temperature in Fahrenheit still works correctly. t^and T^ come from LM335.?

Livre de v¨ªrus. .

Em ter., 29 de jun. de 2021 ¨¤s 15:20, Rob Giuliano via <kb8rco=[email protected]> escreveu:
Are you sending the temperature from a Davis Weather Station, the Temp sensor on the TT4, or a Temp sensor on a different TT4 analog input?? (assume not the last as it wouldn't be converted to degrees inside the TT4)

Robert Giuliano
KB8RCO



On Tuesday, June 29, 2021, 9:44:18 AM EDT, py5lf_ <py5lf@...> wrote:


Friends
As you can see TT4 cant send temperatures below zero in Celsius;
2021-06-29 06:29:04 -03:?>APTT4,WIDE1-1,WIDE2-1,qAR,:WX?Davis,FTM100DR,5W,GP6,Ext.Temp.:0C,30F,DGP=OFF?
30F = -1C
Any solution ?
--
PY5LF?
Luciano Fabricio


Livre de v¨ªrus. .



--
PY5LF?
Luciano Fabricio



--
PY5LF?
Luciano Fabricio



--
PY5LF?
Luciano Fabricio



--
Richard A. Painter, P.E. Retired