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BUYING A SPARE SI5351A BOARD

Dale Brooks KG7SSB
 

Hi Guys, can someone tell me the best place to obtain the SI5351A VFO board that is used in the BITX40 that connects to the Arduino nano. I'd rather play around with the sketch on an outboard unit before I download to the BITX.

Thanks for the help!!!?
 

Best bet: ?hfsigs.com sells the Raduino (the Si5351 board plus the Arduino Nano and 2x16 display and appropriate connectors) for $25.

If feeling adventerous, could buy the Nano and display off ebay or oddwires.com, etc ? and get an Si5351 breakout board from etherkits.com,?qrp-labs.com, or adafruit.com

Jerry



On Sat, May 13, 2017 at 07:52 pm, Dale Brooks KG7SSB wrote:

Hi Guys, can someone tell me the best place to obtain the SI5351A VFO board that is used in the BITX40 that connects to the Arduino nano. I'd rather play around with the sketch on an outboard unit before I download to the BITX.

?
 

Like Jerry said, hfsigs.com sells the Si5351a board + arduino + display for $25. If you're using it for experimentation with the BitX40 then it's probably the best bet.? On the other hand, it's fairly simple to keep a copy of the original code on your computer and just revert to it if you run into trouble.
Robert Ogburn
 

This looked like a good entry point for this question in reference to how raduimo configures the ArduinoMicro

Where do I find how the port pins are used and configured?? Of particular interest are the pull ups...


TNX? 73 de N5LXK? sk?? sk?? sk? k

"Old time neophyte assembly language programmer for MC6800"
 

The schematic on hfsigs.com ?for the Raduino shows that the Si5351 has 3.3v pullups on the two I2C lines into pins A4 (SDA, and Nano pin 8) and A5 (SCL, and Nano pin 9). ?You won't find those pins called out in Allard's sketch, that happens down in the etherkit Si5351 library. ?The dedicated I2C peripheral interface in the Nano can only use the A4, A5 pins. ? All the other pins are called out in the main sketch, mostly in the setup() routine. ?

Configuring a pin to be a digital input with a pullup is done something like this:

? pinMode(FBUTTON, INPUT)

??digitalWrite(FBUTTON, HIGH);









On Sun, May 14, 2017 at 07:31 am, Robert Ogburn wrote:

This looked like a good entry point for this question in reference to how raduimo configures the ArduinoMicro

Where do I find how the port pins are used and configured?? Of particular interest are the pull ups...

?
 

As of Arduino 1.0.1, it is possible to enable the internal pullup
resistors with the mode INPUT_PULLUP. Additionally, the INPUT mode
explicitly disables the internal pullups.

So the digitalWrite command is no longer required, we can now do it with
just one single statement:

pinMode(FBUTTON, INPUT_PULLUP);

73, Allard PE1NWL

On Sun, May 14, 2017 16:59, Jerry Gaffke via Groups.Io wrote:
The schematic on hfsigs.com ??for the Raduino shows that the Si5351 has
3.3v pullups on the two I2C lines into pins A4 (SDA, and Nano pin 8) and
A5 (SCL, and Nano pin 9). ??You won't find those pins called out in
Allard's sketch, that happens down in the etherkit Si5351 library. ??The
dedicated I2C peripheral interface in the Nano can only use the A4, A5
pins. ?? All the other pins are called out in the main sketch, mostly in
the setup() routine. ??

Configuring a pin to be a digital input with a pullup is done something
like this:

?? pinMode(FBUTTON, INPUT)

????digitalWrite(FBUTTON, HIGH);

On Sun, May 14, 2017 at 07:31 am, Robert Ogburn wrote:




This looked like a good entry point for this question in reference to
how
raduimo configures the ArduinoMicro




Where do I find how the port pins are used and configured??? Of
particular
interest are the pull ups...
 

开云体育

Alternatively you can use:

? pinMode(FBUTTON, INPUT_PULLUP)

and eliminate the digitalWrite line.

?

Mike

K5ESS

?

From: [email protected] [mailto:[email protected]] On Behalf Of Jerry Gaffke via Groups.Io
Sent: Sunday, May 14, 2017 10:00 AM
To: [email protected]
Subject: Re: [BITX20] BUYING A SPARE SI5351A BOARD

?

The schematic on hfsigs.com ?for the Raduino shows that the Si5351 has 3.3v pullups on the two I2C lines into pins A4 (SDA, and Nano pin 8) and A5 (SCL, and Nano pin 9). ?You won't find those pins called out in Allard's sketch, that happens down in the etherkit Si5351 library. ?The dedicated I2C peripheral interface in the Nano can only use the A4, A5 pins. ? All the other pins are called out in the main sketch, mostly in the setup() routine. ?

Configuring a pin to be a digital input with a pullup is done something like this:

? pinMode(FBUTTON, INPUT)

??digitalWrite(FBUTTON, HIGH);

?

?

?

?

?

?

?

?

On Sun, May 14, 2017 at 07:31 am, Robert Ogburn wrote:

This looked like a good entry point for this question in reference to how raduimo configures the ArduinoMicro

Where do I find how the port pins are used and configured?? Of particular interest are the pull ups...

?

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