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Make sure you have adjusted the contrast on the I2C LCD converter board. Dave, W0DF

Hank / K5HDE, Jack / W8TEE, I just finished assembly of Forty-9er/Nano/DDS/16x2 LCD/Encoder. Finally got the VfoSource sketch to compile but LCD only back lights and has the top row of matrix squares

Great! Thanks Bud, I'll get it. I think that was one of the hits I had when I was searching for the header file. 73 Dave KF5OCP

Yes, this is the page you get to if you go to Yourduino.com and look at their I2C displays. I'm pretty sure this was written by Terry King who owns Yourduino. He also served as Tech Ed on my Beginning

https://arduino-info.wikispaces.com/LCD-Blue-I2C https://arduino-info.wikispaces.com/LCD-Blue-I2C A good site Re: LCD I2C compiling and display issues. Bud, K1LC

Dave, At Jack's suggestion I used the following LCD file: NewliquidCrystal_1.3.4.zip written by F Malpartida. All other LCD files must be removed from the library or renamed. There have been some

Hi, Thanks for posting the code for a wider range VFO. I can't get the file to compile. The compiler wants an LCD.h file which is not part of the original VFO folder. I have tried several LCD.h files

The horse may be bloody but isn't dead yet. Certainly most of the circuits we amateurs build are very tolerant of values. In most cases close enough is good enough. One place where I break into my

Hi Hank: Believe me, I understand the economics of this situation. (Most people probably don't know it, but my Ph.D. is in economics, not EE.) Still, placing QA on the buyer is not how it should work.

I have uploaded the source code to allow T/R offset for the transceiver (RXoffset.ino in the files section). Thanks to Joe KF7CX for testing the code with the standard display configuration! As

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SoftwareControlledHamRadio group. File : /RXoffset.ino Uploaded by : lou_w2row

I get it that we shouldn't have to resort to doing our own QA. However the problem is so widespread that it is impossible to control. To a lessor extent I give the vendor a pass. He just gets a

Anytime someone finds a vendor, domestic or foreign, who sells product that is out of spec, they need to post that vendor's name on this forum. There's no need for this kind of crap and if enough of

In my junk box I have a supply of 2x16 LCD displays. These all have the analog interface where it takes several wires from the microprocessor to the display to make it work. This project introduced me

It has been my observation that parts sourced from China obtained through eBay can sometimes have sketchy quality control. Recently I obtained 200 .1uf 50v ceramic caps from one of the more respected

Can anybody tell me where I would make a tap on the 49'er keyer section so I could have a front panel indication of the transmit state? I'd like to use a small led. I found one at RS and it would need

Thanks for the help on the display , that part is working now..https://youtu.be/D_mkqhgZ-lw now to rack my brain on other problems.

Well I finally got to building the nano-DDS kit, Nice, very nice. But I had difficulty with the mini360 regulator board. I could not get it to adjust below 8.7v, I had a few in my stock box so no

Debco has a 10 pack of 5.1V 1W zener diodes for $1.25 and a 2 pack of 22uH chokes for $2. I buy a lot of stuff from them...husband and wife team, both hams, and great people. Debco Electronics |

Well, my update is that I made it back from FDIM and have been checking out some new toys. I ordered the remaining parts/modules for the DDS VFO and should have all that in a few weeks. In the