HI!

Due a defective SD Card I had to re-install everything from scratch.......

But after a couple of days of struggling with the TNC, I have yet to get it to work. I have read pretty much all the tutorial under the sun, and yet still no success....

Where does someone start or looks when everything fails.

Raspeberry Pi 3+B with TNC
All the latest sorftware as of 08-30-2023, no update are available.
Reinstalled to OS about 6 times so far and tried different approaches.

Is there a 2023 updated tutorial on enabling the TNC on the raspberry PI?
So far, from what I understood is that you need to enable the serial port and disable serial login
modify the config.txt with the 3 lines that's need to be added and also the cmdline.txt file

Verify the the TNC with an oscillating scope and meter, the tnc is good.

So any help or insight would be great!

Appears to be Greg, cyclone chip is listed.?

Jim its a SDR using a FPGA so the modes are software defined.?

this hat is under a watt , the HermesLite2 is a full 5w with filters (no filters on the hat, so experimental levels)?

I was using sparkSDR console and rx performance rivals the 705 sitting here easily.?

if it’s really interesting buy a Hermes 5w radio - I don’t regret the $150 here half the cost of a kiwi?

kelly?

if that link sucked -?

there is the source of it and a better link?

k

I wanted to highlight a raspberry project which I think is amazing. it's a Hermes SDR crunched into a pi-hat and it's incredible. I dare say it outperforms with SparkSDR the other radios I love dearly.

around $170 after tax and shipping ?

de K7MHI

Thanks Ron. I'll take a look at the README file. 73 - Scott/KK6DZ

Folks,
I'm enjoying using Home Assistant, but and fun ham radio projects for the Pi4?
Thank you?
Ed

I built one with a Raspberry Pi Zero W, so you shouldn't have any trouble at all.

3D display case if it's helpful:?https://www.thingiverse.com/thing:5429286
73,
Ron KO4RON

If you look at , you'll see that a 100ms debounce is already in the kernel overlay -- no need to add your own.
This has been available since 2017. You can choose other GPIO pins, except, the comments say that for
"Raspberry Pi 1 Model B rev 1 can be wake up only by GPIO1 pin."

Look through /boot/overlays/README for tons of other useful built-in functionality.
73,
Ron KO4RON

David - I also added a software debounce to the command to add some noise immunity. What I like is that this approach acts as both a power down and power up using the same button. One of the drawbacks is that it uses the I2C GPIO #3. I guess we can't have everything. 73- Scott

I eventually bought a CrowPi-L by Elecrow (https://www.elecrow.com/crowpi-l-real-raspberry-pi-laptop-for-learning-programming-and-hardware.html)
with a Raspberry-Pi4B and 8Gb of RAM.
I have installed two SD card, on with the genuine Elecrow OS and the other with HamPi by W3DJS.

I'm totally satisfied by this choice.
73 - Pierre - FK8IH

开云体育

Hmmm.. that's a new one to me and thanks for mentioning it.? That said, I use a modified version of this older-style shutdown method mentioned at .? My concern for the new way is I had a considerable amount of false shutdowns with the original script so I added both software debouncing and also a required 5 second hold-down of the button to ensure it's a) not a glitch / RFI / etc and you REALLY want the Pi to go down.? I also see this new approach defaults to the use of the GPIO pin#3 which is also the I2C SCL signal.? That's a serious bummer as I personally use I2C all the time for say RTC chips, LCD displays, etc. but fortunately, this is reconfigurable to GPIO#1 though that will impact reading of HATT ID eproms.

--David
KI6ZHD

I needed an easy power ON/OFF button on my RPi4B and came across this approach at??which worked great. It does the equivalent of "shutdown" command. Read the link for additional info before implementing.

Simply add the line below to the /boot/config.txt and add a push button between gpio_pin 3 and ground.

dtoverlay=gpio-shutdown,gpio_pin=3

开云体育

It would really help if you would quote the message you are replying to. Something like this going out to a large group probably doesn't tell most people anything.

Mick - W7CAT

开云体育

It's okay. We all may mistakes. Getting the wrong group or a private message that gets sent to a group.? : )

Mick - W7CAT

On Sat, 12 Aug 2023 14:54:35 -0700, "Frank" <FOMEEKS@...> wrote:

I have 1 i built on my qrz page. W7FOM

That would be this one:


Nice work.

Makes sense. I guess I wasn't thinking too hard about it! Thanks - Scott

I meant it has nothing to do with a RPi4. Scott

I have 1 i built on my qrz page. W7FOM