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Re: Exciting news re GPS...

Hans Summers
 


Hi Keith
?
Will this still be happy with the Adafruit unit and the 100mS pulse width?

Yes, it will!

73 Hans G0UPL?


73 Keith.


On 27 Jun 2013, at 23:13, Hans Summers <hans.summers@...> wrote:

?


All

As some of you know, I have what I call a "GPS Simulator" which is an ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and it also has a realtime clock which updates correctly in the $GPRMC, and produces a 1pps signal output. Using this I can model different settings, baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there seemed to be a consensus opinion that GPS modules having very short (microseconds) pulse widths on the 1pps signal, do not work properly in v2.02a. So I have set my simulator with a very short pulse width, less than 1us. Using this setting I can see the seconds jump sometimes in 2 second jumps. So I am able to reproduce the same problem some GPS modules show.?

Next I printed out my code and stared at it all week on the train to and from work. ?I came up with a strategy for fixing it. This evening I tried the strategy. It works! In my simulator at least! Everything is ticking away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006, GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.?

Fingers crossed...

73 Hans G0UPL
?
Re: Exciting news re GPS...

Graham
 

¿ªÔÆÌåÓý


Good morning Hans (and all),

I am still working towards getting my U2 kit built and on the air and I have been taking note of the discussions around GPS and new versions of firmware.

At the moment I am hesitant to order new chips as I am waiting to see where things fall. However, I have to ask, is the hex file available of the new versions for those of use capable of programming a new cpu to be able to do so?

cheers, Graham ve3gtc



On 13-06-27 10:13 PM, Hans Summers wrote:


All

As some of you know, I have what I call a "GPS Simulator" which is an ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and it also has a realtime clock which updates correctly in the $GPRMC, and produces a 1pps signal output. Using this I can model different settings, baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there seemed to be a consensus opinion that GPS modules having very short (microseconds) pulse widths on the 1pps signal, do not work properly in v2.02a. So I have set my simulator with a very short pulse width, less than 1us. Using this setting I can see the seconds jump sometimes in 2 second jumps. So I am able to reproduce the same problem some GPS modules show.?

Next I printed out my code and stared at it all week on the train to and from work. ?I came up with a strategy for fixing it. This evening I tried the strategy. It works! In my simulator at least! Everything is ticking away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006, GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.?

Fingers crossed...

73 Hans G0UPL
?
Re: Exciting news re GPS...

"Philip"
 

Well done Hans....

Will be nice to get my Trimble unit working again...


Great stuff
Philip G4JVF

--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:

All

As some of you know, I have what I call a "GPS Simulator" which is an
ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and
it also has a realtime clock which updates correctly in the $GPRMC, and
produces a 1pps signal output. Using this I can model different settings,
baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there
seemed to be a consensus opinion that GPS modules having very short
(microseconds) pulse widths on the 1pps signal, do not work properly in
v2.02a. So I have set my simulator with a very short pulse width, less than
1us. Using this setting I can see the seconds jump sometimes in 2 second
jumps. So I am able to reproduce the same problem some GPS modules show.

Next I printed out my code and stared at it all week on the train to and
from work. I came up with a strategy for fixing it. This evening I tried
the strategy. It works! In my simulator at least! Everything is ticking
away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006,
GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz
calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud
Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you
three can try it and it works on all three then I think this will be
excellent progress indeed, maybe finally the Ultimate2 GPS issues will be
over and we'll have widespread compatibility with most GPS modules.

Fingers crossed...

73 Hans G0UPL
Re: Exciting news re GPS...

Tony Volpe
 

Woooop di do!!

bzb


On 27 June 2013 23:13, Hans Summers <hans.summers@...> wrote:
?


All

As some of you know, I have what I call a "GPS Simulator" which is an ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and it also has a realtime clock which updates correctly in the $GPRMC, and produces a 1pps signal output. Using this I can model different settings, baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there seemed to be a consensus opinion that GPS modules having very short (microseconds) pulse widths on the 1pps signal, do not work properly in v2.02a. So I have set my simulator with a very short pulse width, less than 1us. Using this setting I can see the seconds jump sometimes in 2 second jumps. So I am able to reproduce the same problem some GPS modules show.?

Next I printed out my code and stared at it all week on the train to and from work. ?I came up with a strategy for fixing it. This evening I tried the strategy. It works! In my simulator at least! Everything is ticking away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006, GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.?

Fingers crossed...

73 Hans G0UPL
?
Re: Exciting news re GPS...

"Paul KE7HR"
 

I can see it now... Ultimate 3 including a real time clock like this one... Tell the new U3 your 10 character grid and watch it keep the transmitter on time...



Paul KE7HR

--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:

All

As some of you know, I have what I call a "GPS Simulator" which is an
ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and
it also has a realtime clock which updates correctly in the $GPRMC, and
produces a 1pps signal output. Using this I can model different settings,
baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there
seemed to be a consensus opinion that GPS modules having very short
(microseconds) pulse widths on the 1pps signal, do not work properly in
v2.02a. So I have set my simulator with a very short pulse width, less than
1us. Using this setting I can see the seconds jump sometimes in 2 second
jumps. So I am able to reproduce the same problem some GPS modules show.

Next I printed out my code and stared at it all week on the train to and
from work. I came up with a strategy for fixing it. This evening I tried
the strategy. It works! In my simulator at least! Everything is ticking
away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006,
GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz
calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud
Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you
three can try it and it works on all three then I think this will be
excellent progress indeed, maybe finally the Ultimate2 GPS issues will be
over and we'll have widespread compatibility with most GPS modules.

Fingers crossed...

73 Hans G0UPL
Re: Exciting news re GPS...

Andy Cutland
 

That's great news Hans.

I solved the problem with my Up501 gps by adding ferrite beads on every lead connected to the gps. It would seem that gps modules do not like being close to rf fields. It may be worth mentioning this on the site in case some still experience problems with modules that are U2 compatible.

73's
de Andy


------------------------------

On Thu, Jun 27, 2013 3:13 PM PDT Hans Summers wrote:

All

As some of you know, I have what I call a "GPS Simulator" which is an
ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and
it also has a realtime clock which updates correctly in the $GPRMC, and
produces a 1pps signal output. Using this I can model different settings,
baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there
seemed to be a consensus opinion that GPS modules having very short
(microseconds) pulse widths on the 1pps signal, do not work properly in
v2.02a. So I have set my simulator with a very short pulse width, less than
1us. Using this setting I can see the seconds jump sometimes in 2 second
jumps. So I am able to reproduce the same problem some GPS modules show.

Next I printed out my code and stared at it all week on the train to and
from work. I came up with a strategy for fixing it. This evening I tried
the strategy. It works! In my simulator at least! Everything is ticking
away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006,
GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz
calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud
Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you
three can try it and it works on all three then I think this will be
excellent progress indeed, maybe finally the Ultimate2 GPS issues will be
over and we'll have widespread compatibility with most GPS modules.

Fingers crossed...

73 Hans G0UPL
Re: Exciting news re GPS...

g3zjo
 

On 27/06/2013 23:13, Hans Summers wrote:
If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.
Yey, that will be fun.I shall mug every passing Postman for the next few days.:-)

Indeed that would be excellent progress, I do hope that widespread compatibility is achieved.

73 Eddie G3ZJO
Re: Exciting news re GPS...

Keith Maton
 

¿ªÔÆÌåÓý

Sounds very good to me.

Will this still be happy with the Adafruit unit and the 100mS pulse width?

73 Keith.


On 27 Jun 2013, at 23:13, Hans Summers <hans.summers@...> wrote:

?


All

As some of you know, I have what I call a "GPS Simulator" which is an ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and it also has a realtime clock which updates correctly in the $GPRMC, and produces a 1pps signal output. Using this I can model different settings, baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there seemed to be a consensus opinion that GPS modules having very short (microseconds) pulse widths on the 1pps signal, do not work properly in v2.02a. So I have set my simulator with a very short pulse width, less than 1us. Using this setting I can see the seconds jump sometimes in 2 second jumps. So I am able to reproduce the same problem some GPS modules show.?

Next I printed out my code and stared at it all week on the train to and from work. ?I came up with a strategy for fixing it. This evening I tried the strategy. It works! In my simulator at least! Everything is ticking away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006, GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.?

Fingers crossed...

73 Hans G0UPL
?
Exciting news re GPS...

Hans Summers
 


All

As some of you know, I have what I call a "GPS Simulator" which is an ATmega88 I programmed to send a NMEA string with the $GPRMC sentence, and it also has a realtime clock which updates correctly in the $GPRMC, and produces a 1pps signal output. Using this I can model different settings, baud rates, and 1pps pulse widths.

From the comments on which GPS modules worked and which didn't, there seemed to be a consensus opinion that GPS modules having very short (microseconds) pulse widths on the 1pps signal, do not work properly in v2.02a. So I have set my simulator with a very short pulse width, less than 1us. Using this setting I can see the seconds jump sometimes in 2 second jumps. So I am able to reproduce the same problem some GPS modules show.?

Next I printed out my code and stared at it all week on the train to and from work. ?I came up with a strategy for fixing it. This evening I tried the strategy. It works! In my simulator at least! Everything is ticking away here nicely with 1 minute frame, message "E" in FSK/CW with speed 006, GPS on, and < 1us pulse width. Heartbeat is beating nicely and 125MHz calibration has occurred, as have time setting and Maidenhead locator.

I will now send a v2.03 chip (as it will be called) to Eddie G3ZJO (proud Trimble owner) and Andy G0FTD (UP502 GPS) and Tony G0BZB (EM406). If you three can try it and it works on all three then I think this will be excellent progress indeed, maybe finally the Ultimate2 GPS issues will be over and we'll have widespread compatibility with most GPS modules.?

Fingers crossed...

73 Hans G0UPL
?
2.02k installed and working very well

Keith Maton
 

Today I took delivery of 2.02k and some extra LPF boards.

Along with my Adafruit GPS, it's working very well. I've been running WSPR and FSKCW on 30m within the same ten minute frame for a few hours today and it's very stable. I set the speed to 7 and prefixed my callsign in the 'message' field with two spaces to give roughly equal leading and trailing low tones. I think it looks rather good.

Here's a capture from the LA5GOA grabber which was taken a few minutes ago.



It's good to be able to run WSPR for the instant gratification through and then to be able to go look around the grabbers for the QRSS signal.

Thanks Hans for this great addition.

73 Keith, G6NHU
2.02a and 2.02k chips arrived this morning

"Philip"
 

Adafruit GPS module working perfectly with the new firmware.

My Trimble GPS which worked with ver 2.01 doesn't work with 2.02a
but I half expected that as it's noted on Hans web site..

Love the menu selector halting between character sets....great stuff..

Anyhoo,going to try my new 2.2k chip tomorrow..



Philip G4JVF
Re: Note about ordering...

"David Atkins"
 

¿ªÔÆÌåÓý

The updated software [and additional LP filters] arrived this afternoon. Clearly and competently packed, as before.
Busy tonight, but I will try a couple of GPS modules tomorrow.
I have high hopes ;-)
?
David
G8XBZ

From: QRPLabs@... [mailto:[email protected]] On Behalf Of Hans Summers
Sent: 16 June 2013 11:17
To: qrplabs@...
Subject: [QRPLabs] Note about ordering...


All

Please note, U2 kits are still pending arrival of components here. So if you make an order which includes a U2, I hope it is Ok for you to wait for it all to be shipped together.

73 Hans G0UPL
v2.02a not quite doing what it should with gps up501

Andy Cutland
 

Hi all,

I seem to be having some trouble with the new chip. The kit locks onto the satellites no problem and calibrates and sets the time fine but after a transmission period the time is wrong which means there is no chance of it transmitting the next frame on time. On a wspr tx the time is normally 1 minute 50 seconds slow when the end of frame is reached. I tried on fskcw today and the same problem seemed to be encountered.

Tonight i will try adding a few resistors on the pps and data line to see if that helps. In the mean time does anyone have an idea as to what may be causing this problem ?

73's
de andy
Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)

"Colin XSD"
 

¿ªÔÆÌåÓý

Yes Hans, that is basically it.
?
Just like you do now for WSPR with the 4 digit locator but with the option to specify between 4 & 10 digits (depending on the accuracy/transmission time you want).
?
I realise it is no simple task but I figured that since you had the data there already why not do something useful with it.
?
It is no great problem if you can¡¯t do it, it will just save me a lot of time doing it manually, thats all.
?
?
73, Colin M0XSD.
?

Sent: Wednesday, June 26, 2013 1:30 PM
Subject: Re: [QRPLabs] Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)
?
?

?
Hi Colin

I was wondering if it would be possible to append an automatic QRA function to the QRSS Message in a future incarnation of the 'k' version? i.e. in my case a Message of 'M0XSD ' would become 'M0XSD QRA IO84GN00SB'. With the menu item being in the range 0 to 10 in even steps, 0 being off (no QRA displayed) up to the maximum of 10 (as shown in my example above).

You are saying an automatic locator, which gets the latitude and longitude from a GPS module, converts them into all those digits, and appends it with an accuracy specified by you?
?
73 Hans G0UPL
Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)

Hans Summers
 


Tony

I never said I could do that for him. I just wanted to make sure I understood the question, first ;-) ??

It sounded like rather a tall order. Do you know how long it took my feeble brain to work out how to turn the text stream coming from the GPS into the correct 4-character Maidenhead locator.... ? Until reading this email I had no idea Maidenhead locators went any further than 6-characters.?

73 Hans G0UPL



On Wed, Jun 26, 2013 at 3:26 PM, Tony Volpe <tony.volpe.1951@...> wrote:
?

Well, if you can do that for him, I want one that will turn the kit into a time travel device so that I can visit my ancestors and show them why they shouldn't have had any children


BZB
Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)

Tony Volpe
 

Well, if you can do that for him, I want one that will turn the kit into a time travel device so that I can visit my ancestors and show them why they shouldn't have had any children


BZB
Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)

Hans Summers
 


Hi Colin?

I was wondering if it would be possible to append an automatic QRA function to the QRSS Message in a future incarnation of the 'k' version? i.e. in my case a Message of 'M0XSD ' would become 'M0XSD QRA IO84GN00SB'. With the menu item being in the range 0 to 10 in even steps, 0 being off (no QRA displayed) up to the maximum of 10 (as shown in my example above).

You are saying an automatic locator, which gets the latitude and longitude from a GPS module, converts them into all those digits, and appends it with an accuracy specified by you?

73 Hans G0UPL
Re: v2.02k - Twice the fun, WSPR and QRSS together! (and new feature request)

"m0xsd@..."
 

Hans,

My v2.02k arrived this morning and is now up & running under test and seems to be working just fine.

I was wondering if it would be possible to append an automatic QRA function to the QRSS Message in a future incarnation of the 'k' version? i.e. in my case a Message of 'M0XSD ' would become 'M0XSD QRA IO84GN00SB'. With the menu item being in the range 0 to 10 in even steps, 0 being off (no QRA displayed) up to the maximum of 10 (as shown in my example above).

I would find this extremely useful to let people know my exact position (to the accuracy defined) when out portable.


73, Colin M0XSD.

--- In QRPLabs@..., "m0xsd@..." <m0xsd@...> wrote:

Mine too:)

Colin M0XSD.

--- In QRPLabs@..., "Chris D" <kq2rp.cw@> wrote:

Fantastic. Mine is on order!

Chris
KQ2RP
WSPR Problem Using V2.02a

"John"
 

¿ªÔÆÌåÓý

Hi Group,
?
I've installed the new V2.02a chip, but having problems when using WSPR. The transmission starts OK but at the end of the 2 minute period the RF does not shut down. Has anybody experienced this?.
?
Hans, I'm using a Navman Jupiter 21 GPS module (TU21-D450-021).? I rescued 3 from EPIRBs that were considered beyond economical repair by our marine dept. and destined for the WEEE waste. It works fine on both the old and new version of the chip, but does need an external antenna, another one for the GPS compatability list.
?
73,?John G4SMX
Re: A note re shipping...

"m0xsd@..."
 

Thanks Hans,

I don't have to wait any longer, my v2.02k chip and a couple of LPF filters arrived this morning (26th Jun 3013).

Fitted the chip, put in some setting & fired it up & have already heard & decoded myself on 40m WSPR :)

Now to see if I can see myself on QRSS.


73, Colin M0XSD.

--- In QRPLabs@..., "Colin XSD" <m0xsd@...> wrote:

Thanks for the reminder Hans.

I was just thinking ?€?I wonder where my order has got to?€?. I guess I have a few more days to wait .
I (and I?€?m sure most people here) understand and don?€?t mind the wait but it doesn?€?t stop us being impatient .


73, Colin M0XSD.

From: Hans Summers
Sent: Monday, June 24, 2013 10:39 PM
To: qrplabs@...
Subject: [QRPLabs] A note re shipping...




Good evening all

A quick note about the shipping. Orders are normally shipped the next business day after they are received. The exceptions are:

1) When a huge volume of orders are received suddenly, it can take a while to clear. An example is the sudden influx of orders from people who wanted v2.02a or v2.02k chips. In that case the orders are worked through but it took a week until every order was sent.

2) When the kit is out of stock, such as the Ultimate2 - in which case you'll have been advised on the ordering page of that. The U2 kits are now pending only on the PCB, which the manufacturer claimed would take a week to make but in fact took very much longer. The latest date they gave me is tomorrow (Tuesday 25'th), then they have to be shipped to me; hopefully we are getting close now.

So please be patient in case 1) because as you know, this is a low cost operation, there are not a whole army of people waiting on orders and ready to go immediately an order comes in :-)

73 Hans G0UPL
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