Rich, I just uploaded an application that I completed about a week ago. I started off with some of the examples that Byon developed, and wrote an app that...
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J. Rausch
ke4nyv
Jul 7, 2004 2:29 pm
I could be wrong, but are you referring to the $GPWPL string, not $GPWPT? Jason KE4NYV www.ke4nyv.com RPC Electronics www.ke4nyv.com/rpc ... GPS ... begin ... ...
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kb9khm
Jul 7, 2004 2:36 pm
You're correct, it is $GPWPL .. my bad. If anybody tries out the code, let me know how it works for you. Mark (KB9KHM)...
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J. Rausch
ke4nyv
Jul 7, 2004 2:57 pm
If I can get home at lunch time and grab my PP and my laptop I'll try it out today. Have to make a hour trip after work south, so that will be a good road...
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kb9khm
Jul 7, 2004 3:39 pm
Jason, I too have strong feelings about the features I'd like to see implemented on the PicPac. At the very least I would like TinyTrack III type transmission...
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kb9khm
Jul 7, 2004 9:38 pm
Jason, I just also ordered this display. What type of resister did you use? I'm thinking 500ohm 1/2 watt? or will 1/4 watt work? Mark (KB9KHM)...
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J. Rausch
ke4nyv
Jul 8, 2004 4:52 am
I originally tried a 800 ohm 1/4 watt and the thing almost burned up before my eyes within seconds. I scrounged around in my parts and found some extra 39 ohm...
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J. Rausch
ke4nyv
Jul 8, 2004 5:02 am
Today at work I loaded in the new program and also swapped out R2 with a 22K resistor. The resistor change made a WORLD of difference, from no decoding to...
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Mike
mcotts
Jul 8, 2004 11:49 am
This weekend, i will try out your program and pass on what happens. Mike - KB8SSH ... not...
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kb9khm
Jul 8, 2004 2:06 pm
Jason, The resistor change seemed to make a big difference for me also, but I haven't had enough operating time with it yet to really get a good idea of how...
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kb9khm
Jul 8, 2004 2:07 pm
Thanks Mike! I'll be looking forward to any feedback you might have. Mark (KB9KHM)...
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kb9khm
Jul 8, 2004 3:38 pm
I'm working on some code for the PicPac to implement SmartBeaconing similar to the TinyTrack. SmartBeacing pseudocode can be found here ...
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richie l
richlangevin
Jul 10, 2004 3:23 am
mark, I changed out the resistor and big difference. it radio was only at 1/4 volume rather than wide open. The code works to my LEGEND with out a problem. I...
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gavinandrews
Jul 10, 2004 2:28 pm
Can someone please summarise the suggestions for R change to help decoding? I see references to both R1 and R2? Which? both? Thanks, Gavin...
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kb9khm
Jul 10, 2004 5:38 pm
Gavin, I replaced R1 (origionally 100K) with a 22K resistor per Lucio's (I6AAD) instructions: Now i haven't the diagram here, but, see the resistor betwen pins...
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kb9khm
Jul 10, 2004 6:04 pm
Rich, The numbers I used in my previous message were just for sake of example. I now have a working implementation of my new SmartBeaconing code. The...
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kb9khm
Jul 10, 2004 8:40 pm
Has anyone done any work with the "Modem Energy Detect" in the PicPac? I'm talking about pin 14 out of the MX614. It goes to pin 6 on the Pic and is PortA bit...
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J. Rausch
ke4nyv
Jul 10, 2004 9:03 pm
When I was messing around with some MX-614 stuff here about a month ago I started looking into this very thing. I never could get the Det pin to go High on...
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gavinandrews
Jul 10, 2004 10:49 pm
Oh well.... I replaced R2 with 100k, and left R1 at its original 100k value. I read the MX614 datasheet and this seems to suggest that the gain on the input is...
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gavinandrews
Jul 10, 2004 10:50 pm
I read the datasheet and decided not to bother... I can't remember the detail but I think I decided it would be too slow to react. ... month ... Det ... they ...
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gavinandrews
Jul 12, 2004 4:09 pm
I'm not an audio sort of guy... in fact I'm not an analog or RF sort of guy so I'm struggling... I have a HT that has an earphone out with a suggested...
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Byon Garrabrant
n6bg
Jul 12, 2004 11:21 pm
... I just made the change myself, and didn't notice much change, but then it was decoding well before. Perhaps I've got a lucky chip. I'd like to hear from 1...
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gavinandrews
Jul 13, 2004 2:31 pm
I have been reading the MX614 datasheet and trying to learn a little bit about op amps! It seems that at Pin 5 (RXIN) is the inverting input of an Op Amp, the...
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kb9khm
Jul 14, 2004 1:49 pm
Gavin, Let me know if you make any progress in this area. I'm curious to know what you come up with. Mine seems to be deocding great with a 22K in place of...
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gavinandrews
Jul 15, 2004 9:05 pm
With R1 and R2 at 100k I can decode... but I still need to keep the volume turned down low... perhaps I could reduce the gain still further? ... of ... couple...
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kb9khm
Jul 15, 2004 9:29 pm
That's great! Does your Energy Detect pin work? (pin 14 of the MX614) Mark (KB9KHM)...
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gavinandrews
Jul 15, 2004 10:10 pm
I haven't tried Pin14 yet... However, Lucio has and had some success... firstly using just a LED and a 1k to show what happens at Pin14. ... MX614) ... the...
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kb9khm
Jul 16, 2004 2:31 am
Yeah, I've seen Lucio's pictures, and just got an email from him about it the other day. I just tried another PicPac (N9XB's) that still has the origional ...
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gavinandrews
Jul 18, 2004 10:18 pm
I've converted all four of my PICPACS to R2=100k and am getting more consistent results. I also noticed that adding the 100pF capacitor improves the ability...
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J. Rausch
ke4nyv
Jul 19, 2004 1:52 am
Do you guys have a link to what Lucio is doing? The pictures? Back from Las Vegas! Jason KE4NYV www.ke4nyv.com RPC Electronics www.ke4nyv.com/rpc...
