Comments on: 7MHZ VFO with Arduino and AD9850 http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/ Amateur Radio Blog, Log, and Outdoor Adventures Sun, 18 Feb 2024 16:16:35 +0000 hourly 1 http://wordpress.org/?v=3.6 By: admin http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-119020 admin Thu, 21 Jan 2021 15:30:56 +0000 http://www.ad7c.com/?p=136#comment-119020 FIrst. Try this.
Regarding the “rotary.h not found” error, the problem is not actually with importing the library.

The library defines the file as “Rotary.h”. The code includes the line “rotary.h”.

The solution is is simple: capitalize the “R”. Then the code compiles nicel

If not… Look through the comments. Asked and answered many times.

-Rich

]]> By: David Nelson http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-119019 David Nelson Thu, 21 Jan 2021 15:20:21 +0000 http://www.ad7c.com/?p=136#comment-119019 Can you please help me, I am very new to programming Arduino software and I am trying to build the AD9850 VFO but always get “rotary.h no such file or directory. I have tried every thing to get it to work without any success. I note from one of the comments that your answer was did you import the file properly, but I do not know how to do that. Is it possible to point me in the right direction I have tried Arduino CC but can not find any solution. I must admit I not skilled in this programming but desperate to get it to work and would really appreciate any help or guidance you can give me.

]]> By: LU1AGP http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-49067 LU1AGP Thu, 19 May 2016 23:31:16 +0000 http://www.ad7c.com/?p=136#comment-49067 Hello Rich ,
Thank you very much, very nice project.
I start learn Arduino with your project. (Nano and 9850 DDS).
73 TNX
Luis LU1AGP

]]> By: DV2UXH http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-36232 DV2UXH Sun, 27 Sep 2015 13:51:21 +0000 http://www.ad7c.com/?p=136#comment-36232 This is really interesting. I will be building this too once I got the parts from Amazon. But I wonder if this can be used to replace the faulty DDS board of the Kenwood TS-850S? Has anyone thought about this? I know some people who had this problem of the first batch of the faulty DDS chips and they are still hoping that they can find a new DDS board although you can not find this anymore in the market. Perhaps someone can have a look if its feasible?

Thank you and 73,

Max DV2UXH

]]> By: YC1JOZ http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-34814 YC1JOZ Thu, 06 Aug 2015 12:57:54 +0000 http://www.ad7c.com/?p=136#comment-34814 very nice….

]]> By: admin http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-1729 admin Fri, 28 Feb 2014 15:33:39 +0000 http://www.ad7c.com/?p=136#comment-1729 100ohm was only because it was next to me on the bench. 100ohm, 470ohm, 1k, 1.8k, and other similar values will all work. It is just important that you use one so you do not pull to much current through the Arduino when you set the switch to ground. 10K is probably the highest I would use. It’s all about sensing the voltage drop (to 0v) and not the current.

Rich
AD7C

]]> By: Rich w6du http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-1722 Rich w6du Fri, 28 Feb 2014 04:39:28 +0000 http://www.ad7c.com/?p=136#comment-1722 I am building the AD9850 DDS VFO. I just got all the parts together.
I have seen other AD9850 VFOs with two 1k resistors on switches to ground.
Why do you use a 1k and a 100 ohm resistor? The 100 ohm resistor is a problem for me but I have a lot of 1k s.
Thanks Rich w6du

]]> By: N5ZKZ http://www.ad7c.com/2013/02/7mhz-vfo-with-arduino-and-ad9850/#comment-90 N5ZKZ Sat, 27 Apr 2013 18:12:07 +0000 http://www.ad7c.com/?p=136#comment-90 I would like to thank you for a lot of hard work, I was able to modify the code for my use easily. this is a great start for my 40 meter qrp cw transceiver.

Thank you for putting this together.

N5ZKZ

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