Don't walk away from that- RUN. If you don't like the Raduino, QRP Labs has a beautiful VFO kit for $33. I love mine.

--
Ryan Flowers KC7RYS?

Finally got some time to work on this. Checked ripple coming in, between 10-20 mV on the 12 V line coming in. Measured 5.08 V and 3.28 V on 5 and 3.3 rails, ac coupled on the scope seems clean. There is a traffic on SDA line whenever pot is moved. It stops when pot is moved to any of the ends and reading gets to the limit (6.99 or 7.50), or sometimes when . Wasn't able to scope 25 MHz crystal.

Loaded Nano with the following code, from etherkit github readme page, slightly modified, see highlighted comments:

/*--------------------------*/

#include <EEPROM.h>

#include <Wire.h>

#include <si5351.h>

Si5351 si5351;

/*-----------------------------*/

void setup() {

? // put your setup code here, to run once:

? Serial.begin(9600);

? si5351.init(SI5351_CRYSTAL_LOAD_8PF,25000000l,0);

? Serial.println("*Initiliazed Si5351\n");

? si5351.set_freq(1000000000ULL, SI5351_CLK2); // 10 MHz on clock 2

? si5351.set_freq(500000000ULL, SI5351_CLK1); ?// ?5 MHz on clock 1

? si5351.set_freq(100000000ULL, SI5351_CLK0); ?// ?1 MHz on clock 0

? delay(10);

}

/*-----------------------------*/

void loop() {

? // put your main code here, to run repeatedly:

? si5351.update_status();

? Serial.print("SYS_INIT: ");

? Serial.print(si5351.dev_status.SYS_INIT);

? Serial.print(" ?LOL_A: ");

? Serial.print(si5351.dev_status.LOL_A);

? Serial.print(" ?LOL_B: ");

? Serial.print(si5351.dev_status.LOL_B);

? Serial.print(" ?LOS: ");

? Serial.print(si5351.dev_status.LOS);

? Serial.print(" ?REVID: ");

? Serial.println(si5351.dev_status.REVID);

}

/*----------------------*/

What I'm measuring is: 2.110 MHz on CLK2, 1.055 on CLK1, 211 kHz on CLK0. All three outputs are about 4.74 times lower than set in the sketch. And the same 740 us pauses every 38 ms, on all three outputs (almost) perfectly lined up with each other (couple of cycles difference).

Then, I unsoldered Nano ( so, no returning to hfsigs, I guess, but I want to thank Ashhar for all the work he's doing :) and had a spare Arduino. Wired 3.3, GND, A4, and A5 from Arduino to the Raduino board (now without Nano) and got it going with the sketch above - results were the same as above. So, definitelly not a Nano problem. I'll be getting one of those Adafruit breakout boards with Si5351, but before that I'm going to try Adafruit library, hoping that it may resolve the issue. But, that will happen tomorrow ...

Goran VE6GPO

Yes, it would work, but as mentioned - too expensive. Try AliExpress or DX.com or eBay and you should find 'just' the AD9850 board by itself (no LCD, buttons, etc). These are around US$6.50 to US$9.50.?

Mike Yancey
Dallas, Texas

Ashhar,

I have to agree with many others. ?I never had an HF transceiver mainly due to 1) cost and 2) desire to experiment. ?Although I have not assembled mine yet, I am looking forward to it. ?Thank you for providing this opportunity to the Ham community and my personal thanks for making a great kit at a great price!

Gene

N2IJF?

My friend Makis, SV1AFN? in Greece ...sent me an email to one of his newest offerings...

He is offering it for $8.90.. he also has other items of interest.. I previously purchased his VHF transceiver board which is based on a DRA818V..

I have played with it and a raspberry pi? for PACKET but an arduino and his DRA818V transceiver board makes a neat next project.. A Tech Class QRP semi kit..

de W8LM

ARRL Life member - licensed 50 years

Eddie,

You could but be sure to include at least a 100 ohm resistor in series with it to prevent over current. This is brightness, not contrast. A 1K would be OK.

Don, ND6T in his hacks ?statement:?I brought the brightness of my BITX??LCD down by replacing the 110 ohm ballast resistor for that LED??with a 470 ohm unit.

Can you put a potentiometer?in place of replacing the resistor and if so what pot would I use 1K, 10K, ect?

Thanks

? ? ? ? ? ? ?Eddie kj4fgi

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