Date   

Re: 2 and 3 pin connectors used with Bitx40 sad board

Steve Robertson
 

When I was Arduino playing a lot the DuPont jumpers used to hook everything up always drove me nuts.  It seems you never have enough of the colors, lengths, etc. that you want.

I finally decided to just make my own.  This video shows the Engineer PA-09 crimper that I ordered.  It takes a while to learn to use it, but once you do, you'll love it! (I'm low vision, so it took me longer, but still not that long)

I ordered the male and female ends, along with housings up to 10 pins, from China through eBay, it took a while for everything to arrive but they were cheap and I ordered a lifetime supply.

Once you can make the jumpers, and have the multi-pin housing available, your projects get to looking a lot less like a rat's nest and a lot more like an actual organized project!

https://www.youtube.com/watch?v=3Cw9YFLDZeo

73,

Steve, KA0NEB


Re: Raduino dead?

Ashhar Farhan
 

do this,
disconnect the power and plug in the nano with a usb cable. the raduino should still light up. now try programing it.
- f

On 01-Feb-2017 6:27 am, "Kelly Jack" <kellyjack1968@...> wrote:

Helmut,


I fried my nano and had to unsolder it from the raduino board. Can confirm it is a pain but doable. I clipped the nano pins between the two boards using diagonal cutting pliers, a couple of pins at a time on each side, and broke the nano board away piece by piece in the end leaving just the pins in the board which could then be removed one by one. Its not without risk of damaging the raduino pcb so care and patience required.


I contemplated putting female pin sockets in the raduino board but there is not enough room between the raduino board and the lcd board to do this. It might be possible to put the nano on from the other side of the raduino board and do this. In the end I didnt think too much about it as it would have required moving the pins on the only nano i had available to the other side of the nano and at that stage i was over desoldering pins. Instead i put the nano in the original way without the plastic spacers on the pins and mounted it a little higher so that if i fry this one its at least easier to cut the pins to remove it.


In summary it was a pain is only suggested as a last resort. I'm sure more ingenious types can come up with a better way.

73


Simon VK3ELH 


Re: Raduino dead?

Kelly Jack
 

Helmut,


I fried my nano and had to unsolder it from the raduino board. Can confirm it is a pain but doable. I clipped the nano pins between the two boards using diagonal cutting pliers, a couple of pins at a time on each side, and broke the nano board away piece by piece in the end leaving just the pins in the board which could then be removed one by one. Its not without risk of damaging the raduino pcb so care and patience required.


I contemplated putting female pin sockets in the raduino board but there is not enough room between the raduino board and the lcd board to do this. It might be possible to put the nano on from the other side of the raduino board and do this. In the end I didnt think too much about it as it would have required moving the pins on the only nano i had available to the other side of the nano and at that stage i was over desoldering pins. Instead i put the nano in the original way without the plastic spacers on the pins and mounted it a little higher so that if i fry this one its at least easier to cut the pins to remove it.


In summary it was a pain is only suggested as a last resort. I'm sure more ingenious types can come up with a better way.

73


Simon VK3ELH 


Re: Raduino transistor getting hot

Leon Kiddell
 

Yes, cascading regulators like that works well to spread the dissipated power between them. It's still being tuned into heat but not all in one package. A very usefull technique even with heatsinking, if you're drawing some decent current (1A+).

I've run the audio stages of a few rigs i've built on a 7809 and then into a 7805 to supply the digital stuff. with the added bonus of a little bit more decoupling to help keep the digital noise out of the AF/RF circuits.

Leon, M6LPK


Re: Tuning clicks

MAc B
 

It's a part of the play ;-)
Will try do the trick with supply.
Asshar, I like it ;-)

MAc

sp9mrn


Re: Tuning clicks

Larry Acklin
 

I used a 22 uF cap paralleled with a .1 (104) cap, bypassing the output of the regulator.  My Raduino is right above the main board, in a plastic case.  I also removed all of the excess wiring, and used coax to connect the output to the DDS connector.  I have very slight clicking only audible when headphones are used.  I think in the Raduino instance it is power related.  2 A linear 12V supply feeds my radio.


73\Larry

KB3CUF


Re: Raduino transistor getting hot

Todd K7TFC
 

>>After many burned fingers and a few burned out regulators, I now always fit a heatsink! (Was the first thing i did to my Raduino!)

I've also heard that one can regulate voltage in two stages to spread the heat between two regulators. For instance, from 12 to 6V by first using a 7809 regulator followed by a 7806. Theoretically, I guess, the same amount of heat would be wasted, but only half as much in each device. A heat sink *might* be the simplest solution, unless you don't have one but you *do* have the two regulators.

73,

Todd K7TFC


Re: Tuning clicks

 

Hans,

If the clicks while tuning issue is software related, why are some of us not having them and others are and we are all running the same sketch?

Joel 
KB6QVI

On Jan 31, 2017, at 12:14 PM, Hans Summers <hans.summers@...> wrote:

Hi Farhan

I went through this issue with the clicks, with the QRP Labs VFO kit http://qrp-labs.com/vfo . The latest s1.02c firmware version does not have clicks. What Si5351A library are you using? I want to take a look at it. Maybe I can spot some problem. 

73 Hans G0UPL


Re: Raduino transistor getting hot

 

I removed mine and mounted it to the bottom of my aluminum case and ran short wires to it. It runs at 80 degrees F at 13.8 all the time.

Joel 
KB6QVI

On Jan 31, 2017, at 1:26 PM, leonkiddell@... wrote:

With 78xx series linear regulators, they 'Throw away' the excess power as heat.

approximately;

( Vin - Vout ) x Current = Wasted heat (in Watts)

so, the bigger the difference between input voltage and output voltage and the bigger the current draw, the more heat you'll generate.


After many burned fingers and a few burned out regulators, I now always fit a heatsink! (Was the first thing i did to my Raduino!)


Leon, M6LPK


Re: Raduino transistor getting hot

Leon Kiddell
 

With 78xx series linear regulators, they 'Throw away' the excess power as heat.

approximately;

( Vin - Vout ) x Current = Wasted heat (in Watts)

so, the bigger the difference between input voltage and output voltage and the bigger the current draw, the more heat you'll generate.


After many burned fingers and a few burned out regulators, I now always fit a heatsink! (Was the first thing i did to my Raduino!)


Leon, M6LPK


Re: 2 and 3 pin connectors used with Bitx40 sad board

Thomas Noel <tnoel@...>
 

John Ion and Rob - thank you. The Relimate name made them easy to find - in India!

Ion’s link to Tayda helped the most. Tayda has an Ebay store.

Still have to wait for LONG shipping delay.

Thomas W Noel
KF7RSF


Raduino Software

N7PXY <hickspj467@...>
 

Has any one been keeping track of software versions/mods/ updates etc. for the software loaded into the Raduino?

I started to look at some of the code but then realized I have no idea if it is the latest version or not?

Anyone have a clue?


PJH, N7PXY


Re: Tuning clicks

MAc B
 

It's etherkit 1xx i suppose but with fixed PLL. : "si5351.set_freq((bfo_freq + f) * 100ULL, SI5351_PLL_FIXED, SI5351_CLK2);"

Should be OK. I also tried Etherkit 2.0.1 with new class "si5351.set_freq_manual()" but with the same effect.
May be the cause is that si5351 is working with arduino without lvl conversion.
I dont know

MAc

sp9mrn


Re: Raduino transistor getting hot

Randy Hall
 

Hi

I noticed that the regulator on my Raduino also runs warm.

I may think about adding a heat sink, or something. 

Randy, K7AGE

On Tue, Jan 31, 2017 at 12:56 PM, Ion Petroianu <ion.petroianu@...> wrote:

That is a linear voltage regulator (7805).

How hot is hot? Can you keep your finger on it?

The temperature increases with the voltage applied. I use mine at 13.8V power source voltage and is warm, not hot. I can take a measurement of the temperature after 30 minutes and let you know how my regulator is doing.

Good luck,
--
Ion

VA3NOI



Re: Raduino transistor getting hot

Ion Petroianu, VA3NOI
 

That is a linear voltage regulator (7805).

How hot is hot? Can you keep your finger on it?

The temperature increases with the voltage applied. I use mine at 13.8V power source voltage and is warm, not hot. I can take a measurement of the temperature after 30 minutes and let you know how my regulator is doing.

Good luck,
--
Ion

VA3NOI


Re: 2 and 3 pin connectors used with Bitx40 sad board

Ion Petroianu, VA3NOI
 


Re: 2 and 3 pin connectors used with Bitx40 sad board

John Smith
 

I found then under the name "Relimate Wire Connectors". One Ebay listing for the 2 pin, shows a picture of a 3 pin. Ebay doesn't seem like a good source for this. But many other hobby electronics sites do have them.


Re: Tuning clicks

Hans Summers
 

Hi Farhan

I went through this issue with the clicks, with the QRP Labs VFO kit http://qrp-labs.com/vfo . The latest s1.02c firmware version does not have clicks. What Si5351A library are you using? I want to take a look at it. Maybe I can spot some problem. 

73 Hans G0UPL


Raduino transistor getting hot

kd2akc
 

I wired up the bitx40 and made 1st contact with it at 5w. Nice! I noticed the transistor thats on the radiuno boarsdgets hot. Theres no heat sink on it, is this normal or a symptom of something?


Re: New 10 turn pot for $10.00

G J
 

Be careful, I noticed that the pot on ebay does not carry the Bourns logo, which would tell me it is a fake/knock off. If you look closely at the picture you will see some color variance where the logo should be...thats a sloppy photo edit to remove the bourns logo to be in compliance with copyright laws. I would not buy it unless it has their logo on it.


Jesse

kd0zby