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Relay K1 caused problems here, so I removed it and replaced it with a DPDT switch.? I also added LEDs to the TX and RX signals to indicate the transceiver mode.? I like this arrangement better than

Bob GM4CID Okay. Thanks for the heads-up. I might have some day proceeded blindly thinking that this was an I2C or TWI data bus. Guess that is another reason why I am going ahead with my existing

Jerry I'm still sticking with my resistor matrix on an ADC port, mostly because I already have the keypads and this effort is for my own use. When it is finished (if it gets finished) someone else may

Jerry, Sorry for the poor picture, that is the correct part number though. These relays have the exact same specifications and pin out as the original one's Farhan used. There is nothing really

Hi, Art. The Raduino board provides a T/R signal that operates a relay (bottom-left on the schematic). This relay switches power to the RX or TX circuits.? I suggest you use a highlighter to mark TX

Arv, The?TTP229?capacitive??keyboard has two pins labelled SCL and SDO but unfortunately they are not I2C. The way that they work is SCL is clocked frequently up to 16 times and during each clock

Could work. Though scanning a keypad with i2c will consume a lot more processor time than just reading some IO pins.

The Bitx40 and uBitx use relays with a 12v coil,? there are some very similar relays out there with 5v coils that would not be suitable. The relay that hfsignals has been using is harder to find,

Thank you Michael for the translation, I could have done with a translator on the internet.

Bob GM4CID That capacitive keypad is interesting, especially vecause it apparently has I2C bus interface capability. Since the Raduino design already includes I2C for the Si5351a and in my case for an

Joel, thanks for the steer on a relay. I think I managed to decode the print properly from that photo, here's some sources. Looks like walmart, kmart, newegg, dealextreme are/were also selling them. I

Rough translation ?....? ?"He is wondering why for firmware v1.094 there are .HEX files available but no source files, ?as with his Mac has has no way to transfer .HEX files to the Raduino."

Hello Guy, Here is a shot of the relay. They are just cheap Chinese EBay relays, I've been using them for years, they seem to be quite reliable. Joel N6ALT

Hi Martin: Not a problem. One other thing: If your project includes a header file (which it should for multiple files), it should be included as: ?? #include "myHeaderFile.h" and not ? #include

Howard: Alas, I don't know anything about compiling on the Mac, but you can ignore the invalid conversion warnings as the compiler can usually resolve those types of warnings. Did you reboot the

Or <ctl>h 73, Bill -- bark less - wag more

Hi Don - I tried a small RG174 cable and unfortunately it didn't solve the RFI problem.? Still getting a very strong garbled RFI when I transmit SSB and the audio cable is connected.? Grounded at

Yes, you are both quite correct. Ground both ends of this connection. -Don

Got it working! Seems like a bad connection on the mini USB connector.

Okay, now it compiles, but it doesn't recognize the Arduino. I installed the CH340 driver, but it didn't help. Anything else I am missing? Howard