Keyboard Shortcuts
Likes
- BITX20
- Messages
Search
|
Re: PTT line to Raduino?
开云体育Just remember the PTT is dealing with 12V and you never want that going to any input/output of the Raduino. The only exception is the 12 volts sent to the 5 volt regulator via the orange wire on the oscillator plug. ? v/r Fred W4JLE ? From: [email protected] [mailto:[email protected]] On Behalf Of Leo de Blaauw ? Hi Fred and others thanks for your remarks and clarifications. Well definitely something to look into or maybe just wire the PTT wires into the Raduino as well so that it knows the BiTx40 is in Tx ? All good fun and experimentation for sure and learning lots! ? regards, Leo |
|
Re: BITX40 Audio Indications for Modes And Frequency Readout
Should be possible, though I don't have lots of experience with the Arduino environment. ?Could do it on the Nano that comes with the Bitx40, though that's a tight fit. ?The Nano UART pins are used by the Nano to communicate with the PC host during development via a USB link. ?Also, you may run out of flash and ram on the Nano as you add to your code. ?Future enhancements of the Raduino for RIT, CW keyer, USB/LSB selection, will tie up other pins. ?You could buy back lots of pins by either removing the Raduino's LCD or moving to an I2C LCD. ?Tones can be generated from a counter-timer on the Nano, sending a square wave out a pin. Might be best to move to the $20 PJRC Teensy 3.2 for your proect, it has lots of additional pins, extra UART ports, a DAC so you can create your own sounds, a much much faster processor, and lots of memory. ?The Teensy 3.2 can be used with the same sketches under the Arduino IDE. ?I'd recommend moving to a larger processor such as this for any significant attempt at new features for the Bitx40. The sketch for the Raduino as written by Ashhar has two lines calling the function lcd.print, you would instead call a function to send that data out the UART. You could have separate speakers for the radio, the Emic2, and the tone generator. ?Perhaps better would be to have them all combine in a resistor network mixer each with a separate volume control, and out through the LM386 audio amp. Stuff like this has likely been done many times over already using Arduinos. Jerry, KE7ER On Sun, Mar 26, 2017 at 03:12 pm, N7GES wrote: Hi all. Sorry for what might be Arduino newbe questions, but your patience is appreciated. I'd like to add some things which would be helpful for people who can't see the display. ? |
|
BITX40 Audio Indications for Modes And Frequency Readout
N7GES
Hi all. Sorry for what might be Arduino newbe questions, but your patience is appreciated. I'd like to add some things which would be helpful for people who can't see the display.
I would like to add speech output for frequency readout. I was planning on the Emic 2 module, which has its own text to speech and processor to handle the speech production, and audio output. It uses the serial interface, and I didn't know if I could still use that since the frequency generator is already there. Should I still be able to use the serial lines, as long as the Emic 2 address doesn't conflict? Can I add routines to send it text on a button press, and to silence it if its already speaking without causing timing problems with everything else? Is there even another pin available for another button? Also, I'd like to add tone indicators for mode changes/toggles such as RIT/Tune/Calibrate modes, and beeps/clicks for the auto-tune at the ends of the tuning control. Could I use the CW out pin for that with the "tone" and "notone" functions? Again, thanks for your help for what might be obvious to most, but not yet to me. Kevin, N7GES |
|
Re: am broadcast break throgh
Hi thank you for the pointers.? I will take another look at the pcd just to make sure there isn't a problem tomorrow.? I have ordered a new si5351 board and a arduino nano so will be putting it back to its original state soon. Thank you very much for your reply. Mark 2W0JMK |
|
Re: Continuity
College Professor Simon Thompson
开云体育Thank you very much for the methodical approach to testing for power. I am happy to say that all connections have been made, as you suggested, and the radio is transmitting and receiving very nicely, although I will have to calibrate it, as it is a bit off frequency.
|
|
Re: Bitx40 low volume oscillation squeal
Graham
开云体育nothing ventured, nothing gained - I will see if I have one lying around and will give it a try.I still don't understand what causes this behaviour. I will have to breadboard the circuit and play some with it. cheers, Graham ve3gtc On 2017-03-26 21:32, Ozemail wrote:
|
|
Re: Bitx40 low volume oscillation squeal
That is strange. This was the problem with mine and 2 others had the same problem. I am assuming your smd version is built the same as the through hole version. 73 Ken On Sun, Mar 26, 2017 at 5:29 PM, Graham <planophore@...> wrote:
|
|
Re: Bitx40 low volume oscillation squeal
toggle quoted message
Show quoted text
On Mar 27, 2017, at 8:29 AM, Graham <planophore@...> wrote:
|
|
Re: Bitx40 low volume oscillation squeal
Graham
开云体育I tried a second one and had the same behavior.? I will dig through my junk box and see if I can find another to try.I am not sure how a pot that has dead zones on one or both ends would cause this type of behavior. cheers, Graham ve3gtc On 2017-03-26 21:05, Ken wrote:
|
|
Re: PTT line to Raduino?
开云体育It is the letter L not the number one.? You can determine this by using the” find” function under “edit”.? If you search for ?8001 (with a one) you will not find it in the referenced line but you will if you search for 800l (with the letter “L”) Mike K5ESS ? From: [email protected] [mailto:[email protected]] On Behalf Of John Smith via Groups.Io ? Yea I see it. I was thinking of that when I saw it this time. So this time I looked very carefully and saw it is a number one. ?#define CW_OFFSET (800l) pasted in here on this page with this font, you can't tell what it is. But in the Arduino IDE it's easier to see it is a number 1 on line #178 of my copy. I made a mistake before, but now I know what to be mindful of before I make a statement that might mislead someone who doesn't know better to figure it for themselves. Another one down, a bunch more to go. I know I said I wanted to use it as a simple SSB. But I would like to implement a change of starting up on USB with the knob turned all the way to the right so I can try line in audio for a digital mode. I saw something in the code before, but I also saw someone else mention the knob thing. Does anyone have a code snippet that be pasted in for an easy upgrade? |
|
Re: Continuity
I measured 3.1 kOhm at main PWR. So same like with your rig. Measuring ?PA-PWR ?between + and GND ?is around 60 MOhm (starting with lower value as Jerry explained) and switching test leads on this connector gives about 40kOhm after a few seconds. Having high resistance here on your board too is a good sign. I understand that you want to ensure that everything ?is setup correct before you power up everything. Thats good practice. To make things a little bit easier I would recommend to not power up everything together but do it in steps like I've done it: 1. Radudino. I first connected a USB cable to the Raduino and plugged it into a USB power adapter. Don't use the 12V power supply yet. ?You also could connect it to a PC port, but its maybe more save for a first test not to do this. You should see Version and a frequency in the LCD Display. Adjust Display contrast if necessary. 2. If this is OK, remove USB cable and connect 12V power to the Raduino 12V power(orange wire = 12V, Black = GND . Raduino should work exactly as before. 3. disconnect 12V ?power from Raduino and connect it to 12 PWR of BITX40. ?You should hear some noise in the loudspeaker, even without antenna connected To be on the save side, measure current and it should be no more than 150mA. 4. If everything looks good you could also connect Power to Raduino and you should be able to tune and here some changes in the noise, possibly some clicks while tuning and at around 7.2MHz a beep (birdie). 5 Now connecting 12V to PA-PWR. There shouldn't be a big difference in current measurement. I wouldn't press PTT at ?this stage ?because I first would check the system with a 50 Ohm Dummyload to see if ?current in transmit mode is still in range and eventually align it according to Wire Up Instructions before connecting it to a real ?tuned antenna. I don't know what test equipment you have at hand so maybe its now the time to ask for support in your local ham radio club. I'm sure that OMs there are more than willing to support you with your BITX40. ? |
|
Re: Bitx40 low volume oscillation squeal
Try a new one. I found that mine had dead zones at both ends of travel. Replace with a log or audio taper. 73 Ken VA3ABN On Sun, Mar 26, 2017 at 5:04 PM, Graham <planophore@...> wrote:
|
|
Re: Bitx40 low volume oscillation squeal
Graham
toggle quoted message
Show quoted text
|
|
Re: Bitx40 low volume oscillation squeal
Graham Are you using the original volume control that came with the Bitx40? 73 Ken VA3ABN On Sun, Mar 26, 2017 at 4:51 PM, Graham <planophore@...> wrote: Good day all, |
Mark
It looks just like what's in the Arduino IDE except the top is not slanted down. Indicating a lower case L. You guys are right. I am glad I didn't make a bigger ass of myself than I did.
Don, ND6T