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What’s the RTC for here? A display clock or keeping accurate time for WSPR/FT8 or some other digital mode?

Ok. I can do that. There are only a couple hundred pieces on that board and I have a 3 day weekend. I won't post about it until I've finished my assessment or run into problems. But, I feel reasonably

I bought a 4x20 display that's I2C and was really surprised that what they used to convert the parallel to I2C was a PCF8574, an 8 bit i/o expander. I use the PCF8575, the 16 bit version, when I need

Jack Thanks. One more question, where in the code do I change the clock update time. Dave

I don’t know if you make much money from the sale of one Kindle book, but I just bought a copy as a “Thank you” for your help in this thread - and the forum in general.? -- Karl Heinz - K5KHK

Yes you can. ……and if you are... please the transistors around the 12Mhz Christal….. If you have a cheap general coverage shortwave receiver capable of 5/7/12Mhz use this to examine the signals

I see the Orange, #5 wire from the Microphone socket to the Raduino and the violet#1 and blue #2, also - but no switch.? Maybe it's in the microphone wires, that aren't shown?? If so, please tell me

Wait... so instead of doing these "tricks", could I just run through with my meter and test every resistor, capacitor, diode and transistor on the board?

Gordon, Shoot me a line if you want to expose that book to crowd of hams, right next to some of those world famous ones…. Craig KM4YEC at gmail

Probably the LCD isn’t i2c capable. There are with i2c, or use a cheap available converter. Ron – PA3FAT Verzonden: 21 December, 2017 17:31 Aan: [email protected] Onderwerp: [BITX20] CW

OK, so now even more pieces fall into place I couldn't figure out how an extra class licensee was having such trouble finding parts on a board? So now it makes more sense. Everyone has strengths and

I have one of the cases, they are just peel off stickers. To: [email protected] Sent: Thursday, December 21, 2017 8:27 AM Subject: Re: [BITX20] Pelican cases Does anyone know if the awful logos

Take a peek: Arduino DeadOn RTC – DS3234 wiring example and tutorial. | Marc Lane's Blog | | | | | | | | | | | Arduino DeadOn RTC – DS3234 wiring example and tutorial. | Marc Lane's ... | | | |

All: The way Ashhar is using a single ?C I/O line to key the ?BITX is pretty clever, but some people are having issues with different keys/keyers/paddles. I think the main reason he used a voltage

Does anyone know if the awful logos plastered all over the case are decals that can be removed or are the screened?

This one has limit of 9 (ea) Craig KM4YEC

Hi Jack. It says keyestudio DS3234 on the device. I will change the RTC update time to 30 seconds, plenty fast enough for me. Dave

Thanks! Jack, W8TEE To: [email protected] Sent: Thursday, December 21, 2017 11:08 AM Subject: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah

Yes. I know in theory that it doesn't matter if you have anything at all connected as long as you don't key up. In theory... but, at this point, I wouldn't trust theory. I may be a walking time bomb

I am going to take the route of breaking down the circuit into functional modules and implementing each of them as daughterboards that plug onto a motherboard.? I am also going to implement the