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Raduino
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It is important that the Arduino Nano only see power from the USB cable when connecting it to the computer. ?I usually unplug the Arduino Nano board and LCD display (they are soldered together) from the Raduino board (has all the wires off to the Bitx40 main board) when updating firmware. ?But probably ok to just remove power from the radio, then plug the USB cable into the Nano. (Raduino not be powered from the Bitx40 12v power supply when connecting the Raduino to the? On Tue, Mar 14, 2017 at 04:44 pm, College Professor Simon Thompson wrote: Do I need to have the LCD connected to the Raduino when I am connecting to the computer? ? |
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It would nice to have the Nano completely off board.? Any one with spare Nano could try the stand alone down load.? IE I tried the simple Blink Sketch and it did not like it.? Only power "ON" board is illuminated.? Never see the RX/TX leds blink.? I Wonder if the Nano is program first then soldered into the si5351 pcb.? Looks to the CLK2 (MHz) is the si5351 is used. IE: ? 25 MHz - 5 MHz = 7 MHz (40 meters). 73 standing by On Tue, Mar 14, 2017 at 8:39 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:
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Out of curiosity, why?? I use the Arduino Mega on my 3d printer with both USB and external power all the time.? Is there something different in the Nano that would cause problems? I ask because one project I have had in mind but haven't really begun to think about too much yet is to implement basic rig control for operating digital modes more easily. Ben - KE0KKM On Mar 14, 2017 8:39 PM, "Jerry Gaffke via Groups.Io" <jgaffke=[email protected]> wrote:
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开云体育I have no problem uploading sketches into a Nano via USB while it’s also powered from an external power supply .? External power (5V) supplies power to Nano, LCD, and AD9850 ?or Adafruit SI5351 board. Mike K5ESS ? From: [email protected] [mailto:[email protected]] On Behalf Of Ben Kuhn ? Out of curiosity, why?? I use the Arduino Mega on my 3d printer with both USB and external power all the time.? Is there something different in the Nano that would cause problems? ? I ask because one project I have had in mind but haven't really begun to think about too much yet is to implement basic rig control for operating digital modes more easily. ? Ben - KE0KKM ? On Mar 14, 2017 8:39 PM, "Jerry Gaffke via Groups.Io" <jgaffke=[email protected]> wrote: It is important that the Arduino Nano only see power from the USB cable when connecting it to the computer.? I usually unplug the Arduino Nano board and LCD display (they are soldered together) from the Raduino board (has all the wires off to the Bitx40 main board) when updating firmware.? But probably ok to just remove power from the radio, then plug the USB cable into the Nano. ? (Raduino not be powered from the Bitx40 12v power supply when connecting the Raduino to the? On Tue, Mar 14, 2017 at 04:44 pm, College Professor Simon Thompson wrote:
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Jack Purdum
It is important that the Arduino Nano only see power from the USB cable when connecting it to the computer.? Where did you get this from, Jerry? I've never had a problem with a Vin and USB powered at the same time. Perhaps I missed something somewhere. Jack, W8TEE From: Jerry Gaffke via Groups.Io <jgaffke@...> To: [email protected] Sent: Tuesday, March 14, 2017 9:39 PM Subject: Re: [BITX20] Raduino It is important that the Arduino Nano only see power from the USB cable when connecting it to the computer. ?I usually unplug the Arduino Nano board and LCD display (they are soldered together) from the Raduino board (has all the wires off to the Bitx40 main board) when updating firmware. ?But probably ok to just remove power from the radio, then plug the USB cable into the Nano. (Raduino not be powered from the Bitx40 12v power supply when connecting the Raduino to the? On Tue, Mar 14, 2017 at 04:44 pm, College Professor Simon Thompson wrote: Do I need to have the LCD connected to the Raduino when I am connecting to the computer? ?
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That was mentioned in an older post, and I was repeating it. ?I agree, not sure what the issue would be. ? On Tue, Mar 14, 2017 at 08:02 pm, Jack Purdum wrote:
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Here's a couple older posts recommending that we cut power to the Raduino when cabling up the USB port. I'd guess this usually doesn't matter, but can imagine there's cases where it might. ? ?Place your bets.? Jerry, KE7ER On Tue, Mar 14, 2017 at 08:25 pm, Jerry Gaffke wrote:
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Jack Purdum
I think it should be okay to have the 5V from the USB port and 7-15V into Vin and through the regulator. I've never had a problem doing it. Jack, W8TEE From: Jerry Gaffke via Groups.Io <jgaffke@...> To: [email protected] Sent: Tuesday, March 14, 2017 11:25 PM Subject: Re: [BITX20] Raduino That was mentioned in an older post, and I was repeating it. ?I agree, not sure what the issue would be. ? On Tue, Mar 14, 2017 at 08:02 pm, Jack Purdum wrote:
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Jack Purdum
See below: Jack, W8TEE From: Jerry Gaffke via Groups.Io <jgaffke@...> To: [email protected] Sent: Wednesday, March 15, 2017 1:06 AM Subject: Re: [BITX20] Raduino Here's a couple older posts recommending that we cut power to the Raduino when cabling up the USB port. ? ??/g/BITX20/message/21231?I think this is more of a test setup than a warning. ? ??/g/BITX20/message/20881?It is possible to fry the regulator, but I don't think too many of us would over drive the regulator. In general, each pin can sink about 40ma max, so as long as you don't over tax the USB supply, it's probably a better choice if you have one. I'd guess this usually doesn't matter, but can imagine there's cases where it might. ? ?Place your bets.? Jerry, KE7ER On Tue, Mar 14, 2017 at 08:25 pm, Jerry Gaffke wrote:
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The reason for cutting +12v before plugging it into the computer is to prevent +5v from flowing up the USB cable to the computer and cause damage to it, I believe if the USB socket has a diode to prevent that backflow up to computer it should be safe to have both +12v and USB programming connecting.
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I've also not had any issues with power to the Nano while programming it ... ? Power supply to the Nano and USB at the same time seems to be fine for me ... No problems .
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Regards? Marc 'Gw0wvl'..
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I toasted a clone Nano doing exactly this.? Buyer Beware :-) Larry KB3CUF On Wed, Mar 15, 2017 at 6:40 AM, Marc Jones via Groups.Io <gw0wvl@...> wrote: I've also not had any issues with power to the Nano while programming it ... ? Power supply to the Nano and USB at the same time seems to be fine for me ... No problems . |
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Jack Purdum
Over the past 5 years, I've probably purchased over 50 Nanos, most of them clones and Farrukh, Dennis, and I have sold over 200 Nano PCB's for our Forty-9er project (the March, 2016, QST article) and our User Group has almost 450 members and not one person has ever mentioned a problem with having the USB cable and the external supply?attached?at the same time. I also have an antenna analyzer project that uses the Mega 2560 Pro Mini and you can't debug it without having the external supply connected at the same time because of the power requirements for the boards and the display. I'm sure there are units out there that could be fried under certain conditions, but I would think I'd have heard more about them if it were a common problem.? With the Raduino, it hurts nothing to disconnect it if it concerns you. It's just a couple of extra steps that aren't likely when you're programming/debugging the code. Jack, W8TEE From: Larry Acklin <acklin@...> To: [email protected] Sent: Wednesday, March 15, 2017 8:39 AM Subject: Re: [BITX20] Raduino I toasted a clone Nano doing exactly this.? Buyer Beware :-) Larry KB3CUF On Wed, Mar 15, 2017 at 6:40 AM, Marc Jones via Groups.Io <gw0wvl@...> wrote: I've also not had any issues with power to the Nano while programming it ... ? Power supply to the Nano and USB at the same time seems to be fine for me ... No problems . |
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Hi Jack, I read your comments about arduino Nano. Have you downloaded the Nano as installed on the BITX40v3?? I tried to download the simple Blink sketch and it failed.? My question is with the Nano soldered into the board and the in active Si5351 in the circuit (no power applied only USB) - is that a problem?? Or I have a bad Nano. Thank you, Larry - WA9DOH On Wed, Mar 15, 2017 at 8:16 AM, Jack Purdum via Groups.Io <econjack@...> wrote:
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开云体育It is never a good idea to parallel two supplies of different voltages. You may get away with it 999 times out of a 1000…. But! ? Fred W4JLE ? From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Wednesday, March 15, 2017 1:12 AM To: [email protected] Subject: Re: [BITX20] Raduino ? I think it should be okay to have the 5V from the USB port and 7-15V into Vin and through the regulator. I've never had a problem doing it. ? Jack, W8TEE ? From: Jerry Gaffke via Groups.Io <jgaffke@...> ? That was mentioned in an older post, and I was repeating it. ?I agree, not sure what the issue would be. ? ? On Tue, Mar 14, 2017 at 08:02 pm, Jack Purdum wrote:
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Jack Purdum
When you are in the Arduino IDE and uploading the sketch, can you see the TX/RX LED's flashing during the upload? What message(s) do you see issued by the IDE. If the Nano is powered by the USB cable, and the Blink failed, it could be because the serial connection isn't being made, hence the LED question. Also, if the COM link doesn't appear to be working, try installing the drivers that come with the IDE. Until you see those two LED's flashing during an upload, something's amiss. If the Nano is a brick, you can remove it, but it's a messy job since there's no socket. Major surgery is required. Perhaps the fastest way is to carefully snip each leg of the Nano and then use a solder sucker to remove each leg and replace the Nano. (Test it first!) I use so many Nanos that I buy them 5 at a time, usually for around $10 for clones, which I've had good luck with. You'll find a bazillion uses for them, plus many of my club members buy any that I have to spare. Jack, W8TEE From: Larry Smith <815cpu@...> To: [email protected] Sent: Wednesday, March 15, 2017 10:11 AM Subject: Re: [BITX20] Raduino Hi Jack, I read your comments about arduino Nano. Have you downloaded the Nano as installed on the BITX40v3?? I tried to download the simple Blink sketch and it failed.? My question is with the Nano soldered into the board and the in active Si5351 in the circuit (no power applied only USB) - is that a problem?? Or I have a bad Nano. Thank you, Larry - WA9DOH On Wed, Mar 15, 2017 at 8:16 AM, Jack Purdum via Groups.Io <econjack@...> wrote:
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Jack Purdum
Not really. I've had good luck with all so far, so I tend to buy the least expensive. Lately, I'm using the Arduino Mega 2560 Pro Mini and there aren't too many of them yet. (See: ebay?162264493523). However, I usually buy 10 at a time and sell what I don't need to my club members. This helps us all since they will discount the price in quantity. Jack, W8TEE From: "jmlynesjr@..." <jmlynesjr@...> To: [email protected] Sent: Wednesday, March 15, 2017 1:41 PM Subject: Re: [BITX20] Raduino Jack: Do you have a preferred supplier for the Nano modules? James |
Marc Jones
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