Re: adjusting the contrast on the LCD
Yes It is the same pot., Jack.
all the best sarma ?vu3zmv
On Sun, Feb 5, 2017 at 9:08 AM, Mvs Sarma <mvssarma@...> wrote: I generally manage with a 1K resistor or a single 1N4148 diode , with cathode facing ground.
?So far it has been working well for me. I do use model JHD162? modules.
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Re: adjusting the contrast on the LCD
I generally manage with a 1K resistor or a single 1N4148 diode , with cathode facing ground.
?So far it has been working well for me. I do use model JHD162? modules.
On Sun, Feb 5, 2017 at 9:01 AM, Jack Purdum via Groups.Io <econjack@...> wrote: Most have a square pot on the back of the display. Not so with yours?
Jack, W8TEE
I had to replace the LCD that came with the radio.? The new LCD has its contrast set too high.? Does anyone know how to change this?? Is it the blue and white pot next to the arduino??
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Re: adjusting the contrast on the LCD
Most have a square pot on the back of the display. Not so with yours?
Jack, W8TEE
From: "davidzdeb@..." <davidzdeb@...>
To: [email protected]
Sent: Saturday, February 4, 2017 8:16 PM
Subject: [BITX20] adjusting the contrast on the LCD
I had to replace the LCD that came with the radio.? The new LCD has its contrast set too high.? Does anyone know how to change this?? Is it the blue and white pot next to the arduino??
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Re: lcd 3.5 display help sought
The four push buttons are used to control the frequency and its increment. One button allows you to move the cursor above the field that you wish to change. When you get it above the field that you wish to change, you push a button to set it to that field. The encoder can then be rotated to change the field. Truth is, that's a pretty clunky way to do it. In fact, the only reason is because that's the way the VFO code is set to work.?
I use a process that I call Fast Tune. When you are just "tuning around", you rotate the encoder at a fairly slow rate and the frequency changes at a rate set at the current increment value. Let's assume it's 100Hz. If I tune slowly, like you do when you are zeroing in on a frequency, each detent of the encoder is +/- 100Hz, depending on CW (+) or CCW (-) rotation. But suppose you want to move from 7.280 to 7030 to listen to CW. In the video, you're going to have to do a bunch of button pushes to change it to a large increment (e.g., 10KHz) and then, when you get near the CW band, more button pushes to drop the increment back to 100Hz so you can zero in on the frequency you want.
With Fast Tune, as soon as you start moving the encoder shaft rapidly (and you can define in software what "rapidly" is), the software senses the rate of turn on the encoder and immediately and automatically changes the increment to 10KHz (or whatever rate you have set in the code). Keep turning it quickly and the increment stays at 10KHz. However, as you approach your target frequency and you slow the turn rate down, the software senses that and drops the increment back to the "slow" rate of 100Hz (or whatever you have set it to). The default tune rate can even be changed at runtime via an encoder shaft press. No more press-a-button-move-to-the-digit-rate-button-press-rotate-the-encoder-to-the-frequency-button-press. Just move and go.?
If I were you, I'd use Fast Tune in a heartbeat. The code for Fast Tune can be found in my article in the April issue of QRP Quarterly.
Jack, W8TEE
From: Art Olson via Groups.Io <olsonaj6927@...>
To: [email protected]
Sent: Saturday, February 4, 2017 5:23 PM
Subject: [BITX20] lcd 3.5 display help sought
I have been following PD8W (Willem) progress on his build out of a lcd display/si5351. His code and hardware are listed at PD8W.com. After some hard work I have the display working - and looks like his does on his web site. I am at the point where he is using momentary pushbuttons to cycle selections from the screen however am a bit lost as to how the buttons are actually wired up. I sent him a couple of requests for help but he must be out of town as I haven't gotten and feedback. Could someone take a look on his web page to see what I need to do? The sketch is also there and like I said it compiles. My first issue to overcome what understanding how to wire the lcd and found that in the mcufriend ino. Woohoo the display showed up on the lcd. Let me know if you need anything further. Note - I did hook it up to the bitx and the encoder does change freqs so that part is also working
73 Art
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Only one of the out of 6 I belong to show the UPLOAD button.
73 Ken
On Sat, Feb 4, 2017 at 8:36 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: Have been several folks complaining of not being able to upload files.? Searching for "upload" in these messages, appears the problem started on Feb 1 somewhere between posts 21263 and 21280. ? Good to have a thread for this. ?
On Sat, Feb 4, 2017 at 05:25 pm, Ken wrote:
I am trying to upload to the group files, but no UPLOAD button. ?
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Additional BPF's for other Bands
A few weeks ago I uploaded LTSpice plots and schematics for other bands, 80m 60m and 20m.
I finally got some time to build the 20m BPF. Even though the plot was good, the BPF did not work. I double and triple checked connections and components, but no go.
So I pulled out the bible (EMRFD) and read up on TTC, triple tuned circuits. I haven't down this kind of math since the 80's and it was beyond me.
Low and behold on Page 6.77 Figure 6.135 was a chart of L's and C's for different bands. So I built the 20m version and it works great.
Once the UPLOAD button comes back, I will load the plot and schematic to the files.
Meanwhile if anyone is interested, I'm attaching ?a plot and schematic.
73
Ken VA3ABN
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Seems the upload stopped around the latest Groups.IO update. Oh well.
73 Ken
On Sat, Feb 4, 2017 at 8:36 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: Have been several folks complaining of not being able to upload files.? Searching for "upload" in these messages, appears the problem started on Feb 1 somewhere between posts 21263 and 21280. ? Good to have a thread for this. ?
On Sat, Feb 4, 2017 at 05:25 pm, Ken wrote:
I am trying to upload to the group files, but no UPLOAD button. ?
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Have been several folks complaining of not being able to upload files. ?Searching for "upload" in these messages, appears the problem started on Feb 1 somewhere between posts 21263 and 21280. ? Good to have a thread for this. ?
On Sat, Feb 4, 2017 at 05:25 pm, Ken wrote: I am trying to upload to the group files, but no UPLOAD button. ?
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Re: adjusting the contrast on the LCD
Yes,
This really should be mounted on the other side of the board for cases like this.
It would require a slightly different pattern, but it could be done as is.
Ash?
It shouldn't take much adjustment to show data instead of bars,
but one end or the other of the pot travel will show bars, The proper adjustment
is not too far from that point.
john
AD5YE
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I am trying to upload to the group files, but no UPLOAD button.
73
Ken VA3ABN
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adjusting the contrast on the LCD
I had to replace the LCD that came with the radio.? The new LCD has its contrast set too high.? Does anyone know how to change this?? Is it the blue and white pot next to the arduino??
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Re: Using STM32 board with Arduino IDE
The stm-2 board with the modified Adafruit drivers are much faster. Here is a Youtube video showing the difference.
After I get a couple of projects finished, I will probably redo the SNA Jr to use this larger display and a stm 32 board.
DuWayne KV4QB
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DuWayne? KV4QB
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Very much on topic for me, thanks! ?So getting sent to ACS is to be expected. ?Guess I'd better go check that mailbox. In my case, the final 4 zip digits may be a bit superfluous. ?A county of over 3000 sq miles, under 8000 residents.
On Sat, Feb 4, 2017 at 04:03 pm, John Backo wrote: All foreign mail has no zip+4 code on it which is used for routing and delivery in the US. It is all routed (via image) to ACS for US routing. ?
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Re: lcd 3.5 display help sought
Rob
Found it in my reference book. Thanks
Art
Sent from my iPhone
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Show quoted text
On Feb 4, 2017, at 7:24 PM, Art Olson via Groups.Io < olsonaj6927@...> wrote:
Rob
Initially just the 40 m version. I am looking down the road to a multiband at some later date. Thanks for the info. Time to get my reference book out to review. So with the switch closed vcc is connected to the encoder or ?
Art
Sent from my iPhone On Feb 4, 2017, at 7:09 PM, G4NQX < tasmod@...> wrote: Ooops should read pulldown as diagram. Most of the code at the moment is display stuff. The icon.h can be deleted I suspect as it was development penguin pic but i didn't spend time looking too hard at the code. It could do your head in ! Are you using this on the bitX as is, or are you building a featured multiband bitx.
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Rob G4NQX
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Gidday Randy Attached the circuit here. ?Audio not so scratchy and more mellow. Ugly construction is very fiddly but it works. ?Take the red lead off the volume pot and attach AUDIO IN. Attach AUDIO OUT to the volume pot where the red lead was. ?The +12V connection can reach the switch. You have to run a ground wire to the 12V input socket - ground. ?Cost me $AUD8.00 for two sets of parts, resistors? came in packs of 10. Have fun - Noel
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Re: lcd 3.5 display help sought
Rob
Initially just the 40 m version. I am looking down the road to a multiband at some later date. Thanks for the info. Time to get my reference book out to review. So with the switch closed vcc is connected to the encoder or ?
Art
Sent from my iPhone
toggle quoted message
Show quoted text
On Feb 4, 2017, at 7:09 PM, G4NQX < tasmod@...> wrote: Ooops should read pulldown as diagram. Most of the code at the moment is display stuff. The icon.h can be deleted I suspect as it was development penguin pic but i didn't spend time looking too hard at the code. It could do your head in ! Are you using this on the bitX as is, or are you building a featured multiband bitx.
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Rob G4NQX
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Re: Bitx40 and PLJ-6LED Frequency Counter
Yes, Raj, I think it is though I haven't heard that from him.
Regarding the PLJ-6LD counter, there is an interesting video on YouTube examining and demo-ing the unit. Google it.
I have found a web page with the manual too, in English. You can download it but it is the Chinese version. Only the web page has
the English version (in PDF).
Hope this helps.
john
AD5YE
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Re: lcd 3.5 display help sought
Ooops should read pulldown as diagram. Most of the code at the moment is display stuff. The icon.h can be deleted I suspect as it was development penguin pic but i didn't spend time looking too hard at the code. It could do your head in ! Are you using this on the bitX as is, or are you building a featured multiband bitx.
--
Rob G4NQX
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Noel
Which AGC circuit did you use? Randy
On Sat, Feb 4, 2017 at 2:49 PM, noel pakihi <tupakihi@...> wrote: Made two ugly AGC circuits for my BITX40s.? Now audio in each is very smooth and even. Very worthwhile when using phones.? See photos. Cheers - Noel
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OT.
All foreign mail has no zip+4 code on it which is used for routing and delivery in the US. It is all routed (via image) to ACS for US routing.
Each section of the country has a central database of names and addresses where everything is composted and assimilated.
There is a central depository in Saint Louis, MO which has all the USPS names and addresses in the whole country. This is where real-time
updating of the databases is done.
If the address label was wet or abraded a bit, it may have been hard to read. This slows things down a little as someone has to examine
and encode it more or less by hand. But referring to the actual mail is a last resort. Most of the time an image is examined, generally by a robot. I noticed the address label from India was an inkjet printout of the order. It is possible that it became a bit illegible for some reason. It happens. Which is probably a good enough reason to retain the Indian tracking number -- it may be useful in later identification.
Nowadays things are pretty much all automated. I remember well the old LSMs (Letter Sorting Machines) which used a Z80 and 4K magnetic core to control
4 machines. That is 48 clerks encoding, each at 60 letters per minute. They entered the code and the machine counted down through a rotary system
until it was time to drop the letter in a bin. That machine had the single most boring manual I have ever read! But it lasted and was used
for over 40 years...
As to where anybody's specific package is...usually it is in your home country awaiting customs or routing. HFSignals does the packaging and delivers it to their PO. The PO sorts by destination and sends it to the airport. It is loaded on a plane is short order and sent to all the other countries. After it gets to the various airports, the Indian PO has no interest in it anymore. So if the Indian tracking number gives an airport address (Mumbai is the central dispatch office), it has left the country by air and is at least at another airport. After that, it is up to that country to track it. One could get international tracking, but it is very expensive and most people pass it up. Incidentally, India is not alone in this; most countries handle their outbound mail the same way. except it may go by seapost rather than by air.
If there is a problem with delivery, HFSignals generally cannot help. It the is a problem with the rig after you have examined it, then by all means contact them as per instructions elsewhere in this list. Note though, that they have no (i.e. zero) control over damage in transit. Taking care of that is a generous gesture to say the least.
john
AD5YE
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DuWayne Schmidlkofer
