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An affordable samd21 with FPGA combo. That’s a lot of processing in a power efficient package. Perhaps sdr and dsp functionality? kf5nwc

Ok, ?some improvement. ?Readings are a bit more uniform. I checked the frequency compensation of my probes and the 10x was out of adjustment, 1x was OK. ? Adjusted the frequency compensation

Sorry, I should have written Allison with two "L". 73, John

Hello Alison, Head scratching really since you don't even have the usual suspect wires in the connector. It it was me I would pull the Raduino off the main board, reload the factory software (the

It is interesting that an actually simple and innocent question has drawn many down into the weeds without answering a straight forward question. Personally I got interested in the uBITX because it

Even a BS170 (TO92) would work as a pre driver. However perhaps MPSH10 (MMBTH10 in sot23) just sits on the uBITX board and would do well i suppose Regards MVS Sarma

Allison you should check your 4.7k resistor solder connections you should be measuring 5vdc on both sides and ground. Pin 3 is the 5vdc supply and the 4.7k resistor is setting pin 2 high. Do you have

Base on that diagnostic and the other test you run I would say definitely the Nano has an analog input issue. In my test, when you turn the encoder only one way it should always say either

Does the Blink or ASCII Table example programs run? Jack, W8TEE

Problem with 2sc1973 is they may be hard to get and its still a 300mhs ft.? Might as well use 2n2222a. The Bf199 is likely better save for its 25V CE breakdown is kinda low but the 1100mhz FT would

John, I failed to include the link to the encoder test routine.. here it is.. http://www.instructables.com/id/Easy-Arduino-Menus-for-Rotary-Encoders/ I changed the pins from 2,3 and 4, to 14, 15 and

Hi all, Have been following this thread keenly and modding and checking at stages on the way. Completed in the following order. Q90 to 2n2222a sot23. 220pf caps on all 7 driver chain emitter

Hi Mike, Its worth the efford to replace the Arduino Nano with a $8.29 from Amazon. ( https://amzn.to/2rYwT4h ) You will need a solder sucker ( https://amzn.to/2rVGHN7 ) , a good soldering iron (

Odd issue popped up while working with the transmitter. Radio went to CW and stayed keyed.? Tried power of and suoon as it booted it went CW and keyed. This is odd as the blue, purple, and green

Rogier CONGRATULATIONS Linux Just Works. Arv _._

@Kees I noticed that Andy - N9TGR was added to the requested list, it's actually meant to be Ramsin Israel - N9RLI (I'm ordering them for both me and Andy). Thanks! Also, when/how do I pay?

Thanks for the suggestion, Bob. I tried that. The ground is fine, the voltage is near +5v as supplied by the NANO as a reference. I took the power down, disconnected from power source and checked the

*!SUCCES! * A roadkill computer came to the rescue... After readig that the Arduino Nano migth have trouble with the USB 3.0 ports on my iMac I installed the software on my older MB Pro loaded the

Looks like the DTR pin is in the row marked K2 next to resistor R4. Mike K5ESS Sent: Friday, May 18, 2018 9:04 PM To: [email protected] Subject: Re: [BITX20] rough draft of how to connect BITX to

John, Ran across this neat little sketch to test encoders. I used a new NANO and used this sketch straight up. All? of my encoders test good. However, I did learn a thing or two. One batch of