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Re: FDIM ePaper PoC code posted

 

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Jack, for the PoC I had the hat on a Raspberry Pi 5.? Plenty of power for the Python code.

Plus, I just wanted to get an idea of what might be possible.

Python has really taken off with the Data Science and ML communities.

So, lots of scientific and visualization support now.

?

Just picked up a Pi Pico 2W so will be trying out Python and C code on that.

?

72 de Bryan, k0emt

-----Original message-----
From: jjpurdum via groups.io <jjpurdum@...>
Sent: Monday, June 2 2025, 9:57 am
Subject: Re: [qrparci] FDIM ePaper PoC code posted
?
?
Bryan:
?
I checked out Python several years ago and the thing (at that time) that stopped me was the skimpy library support for ham-related projects. I'm sure that's changed, but I haven't checked. Also, it's an interpreted language and I wondered if that would be an issue on some processor-intensive things. However, that's probably less of an issue because of the relatively high clock speeds most RP processors have. I need to "re-investigate".
?
Jack, W8TEE
?
Re: FDIM ePaper PoC code posted

 

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Sure Michael.? I updated the repo with a mermaid diagram of the system architecture.

You'll see a Model View Controller pattern in there.

?

Yes, great advantage in sunlight, no power draw when "sleeping"

Draw back is full refresh of the screen can be slow, a design constraint

You won't be doing a real time waterfall with this type of display.

But, you could do a sweep style graph/plot like on the Yaesu FT-891.

?

I just picked up a Raspberry Pi Pico 2w for the next step of experimenting.

?

72 de Bryan, k0emt
Re: FDIM ePaper PoC code posted

 

One way to have the best of both worlds might be to write a C or C++ library for the heavy DSP computations, where speed will matter most, while writing the UI code in Python.


On Mon, Jun 2, 2025 at 9:57?AM jjpurdum via <jjpurdum=[email protected]> wrote:
Bryan:

I checked out Python several years ago and the thing (at that time) that stopped me was the skimpy library support for ham-related projects. I'm sure that's changed, but I haven't checked. Also, it's an interpreted language and I wondered if that would be an issue on some processor-intensive things. However, that's probably less of an issue because of the relatively high clock speeds most RP processors have. I need to "re-investigate".

Jack, W8TEE

On Monday, June 2, 2025 at 09:40:58 AM EDT, Michael VE3WMB via <mbabineau.ve3wmb=[email protected]> wrote:


Bryan :
?
Thanks for posting this. I had a quick look, but I will spend some more time looking at it in detail when I get a chance.
?
I have noticed that Adafruit now makes a number of small E-ink displays and I have been wondering about incorporating one into a radio project. Possible advantages over display types like OLED are: better visibility in direct sunlight and possibly lower power consumption as you could potentially power the display off at times while retaining the current information, assuming nothing is changing.? The one slight downside is that most, if not all of these displays, use SPI which ties up more processor pins than I2C. This could be a concern when using a processor board with a very small number of pins. I guess the reasoning is that SPI supports faster speeds ??
?
On a related note, I have recently been playing around with microPython as a tool for developing embedded radio projects. With the availably of cheap and powerful processors like the Raspberry Pi Pico (RP2040) I think that it makes sense to consider developing in microPython rather than the more traditional C.? It incorporates most of the features of Big-Python but also has things that are needed for embedded programming like interrupts and even multi-core support for the RP2040 (I think the only platform that current does) and it allows a more interactive relationship with the hardware during program development, which I am finding very useful.??
?
Thanks for sharing.
?
Cheers
?
Michael VE3WMB?
Flying Pigs CW Sprints for June 2025

 

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For the month of June

June 15th - Run for the Bacon CW Sprint (2 Hours) 23:00Z to 01:00Z – Use the Auto logger.
RFTB Autologger is at

40M Walk for the Bacon Slower Code Sprint (Speed Limit 13 wpm)

Evening of Wednesday June 4th at 00:00Z to 01:00Z on 40m 7050 Khz to 7065 Khz.
Evening of Thursday June 5th at 02:00Z to 03:00Z on 40m 7110 to 7115 Khz.
WFTB 40m logger is at:?

20M Walk for the Bacon Slower Code Sprint (Speed Limit 13 wpm)

Evening of Wednesday June 18th at 00:00Z to 01:00Z on 20m 14061 Khz to 14065 Khz.
Evening of Thursday June 19th ?at 02:00Z to 03:00Z on 20m 14061 Khz to 14065 Khz.
WFTB Autologger is at:?

You do not need to be a member of the Flying Pigs QRP Club International.
If you want to be a member, and it is FREE of charge, go to the website and click
on the red membership button near the bottom of the page.? We need your name and call.



72 es OO (OO=Oink Oink)

Brian
FP -57

--
72 de KB9BVN
Flying Pigs CW Sprints for June 2025

 

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For the month of June

June 15th - Run for the Bacon CW Sprint (2 Hours) 23:00Z to 01:00Z – Use the Auto logger.
RFTB Autologger is at

40M Walk for the Bacon Slower Code Sprint (Speed Limit 13 wpm)

Evening of Wednesday June 4th at 00:00Z to 01:00Z on 40m 7050 Khz to 7065 Khz.
Evening of Thursday June 5th at 02:00Z to 03:00Z on 40m 7110 to 7115 Khz.
WFTB 40m logger is at:?

20M Walk for the Bacon Slower Code Sprint (Speed Limit 13 wpm)

Evening of Wednesday June 18th at 00:00Z to 01:00Z on 20m 14061 Khz to 14065 Khz.
Evening of Thursday June 19th ?at 02:00Z to 03:00Z on 20m 14061 Khz to 14065 Khz.
WFTB Autologger is at:?

You do not need to be a member of the Flying Pigs QRP Club International.
If you want to be a member, and it is FREE of charge, go to the website and click
on the red membership button near the bottom of the page.? We need your name and call.



72 es OO (OO=Oink Oink)

Brian
FP -57

--
72 de KB9BVN
ARS Spartan Sprint Tonight!

 


The monthly running of the ARS Spartan Spring starts this evening at 0000Z.?

A fun 2 hours of QRP'ing.

?

Overview & Rule Summary

FOR THE ADVENTURE RADIO SOCIETY

SPARTAN SPRINT

?

What is an ARS Spartan Sprint and how can I participate?

The Adventure Radio Society Spartan Sprint is a two hour casual QRP contest.?

It is held on the first Monday of every month to encourage QRP operators to get on and go to somewhere

near the standard QRP frequencies on the 80-40-20-15-10 Meter bands for an evening of fun.?

It is open to all QRP CW operators – there is not any membership requirement.??

Operating portable and/or using lightweight minimalist (spartan) equipment is encouraged, but is not required.

THE CONTEST PERIOD FOR EACH TIME ZONE IS:

EASTERN 8:00 p.m. to 10:00 p.m. Local.

CENTRAL 7:00 p.m. to 9:00 p.m. Local

MOUNTAIN 6:00 p.m. to 8:00 p.m. Local

PACIFIC 5:00 p.m. to 7:00 p.m. Local

Does?not?shift for DST – This event is always at these Local Times

(UTC for STANDARD TIME : 0100Z to 0300Z)

(UTC for DAYLIGHT SAVINGS TIME : 0000Z to 0200Z)

?

POWER OUTPUT

To keep with its minimalist theme, Maximum Spartan Sprint power output is 5 watts.

?

However, a Spartan Sprint participant running 5 watts who is submitting

?results is allowed to work a non-QRP station.??That contact will count.

?

(A Non-QRP station is not permitted to submit results for this QRP event.)

?

?

OPERATION

We operate CW on 80, 40, 20, 15 and 10 meters, around standard QRP frequencies.

Call???CQ SP?????? Or listen for calling stations.

?

?

EXCHANGE

- Your Call Sign
- Your State or Province
- Your Power output

?

SCORING

Scoring is somewhat unique - score is calculated based on?[Number of Contacts] / [Station Weight].

Working the same station on a different band counts as another contact.

The weight of your station consists of everything except your antenna and feed line.

If your station includes your home-based rig, antenna tuner, DC power supply, heavy paddle or bug - obviously

you are not lightweight - simply report your weight as 30 lbs. (That is the default weight for the Tubby division.)

?

?

REPORTING
To report your results, go to?, and select the?‘ARS Spartan Sprint’?(on the Left side).

You will enter your?[Station Weight]?and the?[Number of Contacts]?that you made.

Soapbox comments may include your power, equipment, antennas, band conditions, outdoor experiences,

and anything else you wish to comment on.

Scores will be Automatically Calculated

Reports will be available for both the Skinny (lightweight) and Tubby (heavyweight) entrants.

?

WORKING HIGHER-POWERED STATIONS:

You may be contacted by a higher-powered station who is not familiar

with the Spartan Sprint and its rules.

As long as you are running QRP, you may count that QSO.

?

?

?

Looking forward to working you during the next Spartan Sprint.

73,? Jody – K3JZD on behalf of

Russ Carpenter - AA7QU and Richard Fisher - KI6SN

The Adventure Radio Society?Pioneers?

?

Last Updated : 03APR25



Mark Prather - WB9HFK

Celebrating my 54th year as an Amateur Radio (Ham) Operator.
CW / Rag Chew Practice Session

 

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Michigan QRP Club

On June 01 I had a CW practice session on 20 metes. I worked only one station.




Conditions were terrible with weak signals, QSB and QRN. The band was very noisy and there was a G4 solar storm. SSN=96, SFI=150, A=126, K=7

My next CW practice session will be June 06 at 08:00 EDT / 12:00 UTC on 20 meters.?Anyone and everyone is welcome. These practice sessions are intended for operators who are new to CW or they need some practice. IT DOES NOT MATTER HOW POOR YOUR CW IS. Mistakes are OK. Poor fists are OK. Slow speed is OK. Really slow speed is OK. This practice is meant for you to improve your CW. I will do my best to adjust to your skill level. Operate at any power level. If several stations show up, I will operate as a round-table control station. I will do it as a round-table so everyone gets a chance to transmit. Please listen to my directions.

Details:
Date - June 06
Time - 08:00 EDT / 12:00 UTC
Band - 20 Meters

How to find me - I will find a clear frequency and call CQ. Go to the Reverse Beacon Network and search for my call sign AB8DF.


That will tell you what frequency I am on. Tune your station to that frequency and if you hear me give me a call. If there is a QSO in progress, please wait for a break in the action. Then send your call sign. If I hear you, I will invite you to join the QSO and start a round-table QSO.

Reply to this email if you have questions.

IT DOES NOT MATTER HOW POOR CW IS

Ed
AB8DF_._,_._,_
Re: FDIM ePaper PoC code posted

 

Bryan:

I checked out Python several years ago and the thing (at that time) that stopped me was the skimpy library support for ham-related projects. I'm sure that's changed, but I haven't checked. Also, it's an interpreted language and I wondered if that would be an issue on some processor-intensive things. However, that's probably less of an issue because of the relatively high clock speeds most RP processors have. I need to "re-investigate".

Jack, W8TEE

On Monday, June 2, 2025 at 09:40:58 AM EDT, Michael VE3WMB via groups.io <mbabineau.ve3wmb@...> wrote:


Bryan :
?
Thanks for posting this. I had a quick look, but I will spend some more time looking at it in detail when I get a chance.
?
I have noticed that Adafruit now makes a number of small E-ink displays and I have been wondering about incorporating one into a radio project. Possible advantages over display types like OLED are: better visibility in direct sunlight and possibly lower power consumption as you could potentially power the display off at times while retaining the current information, assuming nothing is changing.? The one slight downside is that most, if not all of these displays, use SPI which ties up more processor pins than I2C. This could be a concern when using a processor board with a very small number of pins. I guess the reasoning is that SPI supports faster speeds ??
?
On a related note, I have recently been playing around with microPython as a tool for developing embedded radio projects. With the availably of cheap and powerful processors like the Raspberry Pi Pico (RP2040) I think that it makes sense to consider developing in microPython rather than the more traditional C.? It incorporates most of the features of Big-Python but also has things that are needed for embedded programming like interrupts and even multi-core support for the RP2040 (I think the only platform that current does) and it allows a more interactive relationship with the hardware during program development, which I am finding very useful.??
?
Thanks for sharing.
?
Cheers
?
Michael VE3WMB?
Re: FDIM ePaper PoC code posted

 

Bryan :
?
Thanks for posting this. I had a quick look, but I will spend some more time looking at it in detail when I get a chance.
?
I have noticed that Adafruit now makes a number of small E-ink displays and I have been wondering about incorporating one into a radio project. Possible advantages over display types like OLED are: better visibility in direct sunlight and possibly lower power consumption as you could potentially power the display off at times while retaining the current information, assuming nothing is changing.? The one slight downside is that most, if not all of these displays, use SPI which ties up more processor pins than I2C. This could be a concern when using a processor board with a very small number of pins. I guess the reasoning is that SPI supports faster speeds ??
?
On a related note, I have recently been playing around with microPython as a tool for developing embedded radio projects. With the availably of cheap and powerful processors like the Raspberry Pi Pico (RP2040) I think that it makes sense to consider developing in microPython rather than the more traditional C.? It incorporates most of the features of Big-Python but also has things that are needed for embedded programming like interrupts and even multi-core support for the RP2040 (I think the only platform that current does) and it allows a more interactive relationship with the hardware during program development, which I am finding very useful.??
?
Thanks for sharing.
?
Cheers
?
Michael VE3WMB?
FDIM ePaper PoC code posted

 

During the club night I demonstrated a proof of concept of how we might
use an ePaper screen (with buttons) in a project.? The idea being to
plant the seed on what could potentially be done.

The code for that is now up on GitHub

72 de Bryan, k0emt
CW / Rag Chew Practice Session

 

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Michigan QRP Club

On May 30 I had a CW practice session on 20 metes. I worked five stations.



Conditions were fair with weak signals, QSB and QRN. The band was noisy. SSN=122, SFI=157, A=35, K=4

My next CW practice session will be June 01 at 18:00 EDT / 22:00 UTC on 20 meters.?Anyone and everyone is welcome. These practice sessions are intended for operators who are new to CW or they need some practice. IT DOES NOT MATTER HOW POOR YOUR CW IS. Mistakes are OK. Poor fists are OK. Slow speed is OK. Really slow speed is OK. This practice is meant for you to improve your CW. I will do my best to adjust to your skill level. Operate at any power level. If several stations show up, I will operate as a round-table control station. I will do it as a round-table so everyone gets a chance to transmit. Please listen to my directions.

Details:
Date - June 01
Time -?18:00 EDT / 22:00 UTC
Band - 20 Meters

How to find me - I will find a clear frequency and call CQ. Go to the Reverse Beacon Network and search for my call sign AB8DF.


That will tell you what frequency I am on. Tune your station to that frequency and if you hear me give me a call. If there is a QSO in progress, please wait for a break in the action. Then send your call sign. If I hear you, I will invite you to join the QSO and start a round-table QSO.

Reply to this email if you have questions.

IT DOES NOT MATTER HOW POOR CW IS

Ed
AB8DF_._,_._,_
Re: [QRPLabs] [miqrp] Weekly Michigan QRP zoom chat

 

Sorry due to a mix up on my part todays Michigan QRP Meeting is cancelled.
Ed
AB8DF

On May 29, 2025, at 4:26 PM, Dave New, N8SBE <n8sbe@...> wrote:

I joined the waiting room just after 4pm ET, and it said the host has joined. It is now 426pm and I'm still waiting.

On 2025-05-29 15:49, AB8DF Ed Kwik via groups.io wrote:
The meeting might be delayed. Standby.
Ed
AB8DF
--
73,

-- Dave, N8SBE, Hamshack Hotline 550-0971, HamsOverIP 101018, AmateurWire 1348
Re: [miqrp] Weekly Michigan QRP zoom chat

 

I joined the waiting room just after 4pm ET, and it said the host has joined. It is now 426pm and I'm still waiting.

On 2025-05-29 15:49, AB8DF Ed Kwik via groups.io wrote:
The meeting might be delayed. Standby.
Ed
AB8DF
--
73,

-- Dave, N8SBE, Hamshack Hotline 550-0971, HamsOverIP 101018, AmateurWire 1348
Weekly Michigan QRP zoom chat

 

The meeting might be delayed. Standby.
Ed
AB8DF
CW / Rag Chew Practice Session

 

开云体育

Michigan QRP Club

My next CW practice session will be?May 30?at 18:00 EDT / 22:00 UTC on 20 meters.?Anyone and everyone is welcome. These practice sessions are? intended for operators who are new to CW or they need some practice. IT DOES NOT MATTER HOW POOR YOUR CW IS. Mistakes are OK. Poor fists are OK. Slow speed is OK. Really slow speed is OK. This practice is meant for you to improve your CW. I will do my best to adjust to your skill level. Operate at any power level. If several stations show up, I will operate as a round-table control station. I will do it as a round-table so everyone gets a chance to transmit. Please listen to my directions.

Details:
Date - May 30
Time -?18:00 EDT / 22:00 UTC
Band - 20 Meters

How to find me - I will find a clear frequency and call CQ. Go to the Reverse Beacon Network and search for my call sign AB8DF.


That will tell you what frequency I am on. Tune your station to that frequency and if you hear me give me a call. If there is a QSO in progress, please wait for a break in the action. Then send your call sign. If I hear you, I will invite you to join the QSO and start a round-table QSO.

Reply to this email if you have questions.

IT DOES NOT MATTER HOW POOR CW IS

Ed
AB8DF_._,_._,_
Michigan QRP Club Weekly Zoom Chat

 

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We had eleven folks join the MI QRP Zoom Chat on 22 May. Please join us Thursday May 29 (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the main topics will be QRP and other ham interests. New hams are encouraged to participate and ask questions. It's fun, it's easy, and it's free. You only need a computer, a smart phone, or a tablet that can connect to the Internet. OR if you can't be close to any of those you can join by audio with any standard phone. Just follow the directions below. No software needs to be loaded or installed. Anyone can join and non members are welcome. Details are here:
Zoom ID:
811 0835 6229

Pete WK8S
Ed AB8DF
Ernie NE3TE
Tony W8CDC
Stan WB8QJZ
Casey KC9IH
Larry AC8YE
Dave N8SBE
Harry K9DXA
Randy KE8JWB
Charlie NJ7V

It was Randy’s first time. Welcome.
Ernie purchased one of the new palm paddles at Hamvention. He was able to convert it to a kootie key.
It was Charlie’s first time. Welcome
Harry was at FDIM and did POTA on the way home.
Both Ed and Ernie got a bunch of SMA connectors and cables because they got a WB2CBA Pocket Tuner at vendor night which uses SMA. Ed also got a ADX Pocket. The ADX is an Arduino based Digital Modes Transceiver.
Stan wanted to know if we were able to get a look at the new Ten Tec rig. Yes there was one but we could not get a real close to it. It looked like a very rough prototype. We were also able to see the new Yaesu but just too many people to get close. There was a new Flex Aurora.
Pete is going to do a Move-In special contest when this relocation is complete and has his shack up and operational. Standby for details.
Dave has a AI6YM T41 kit
We talked about the I and Q on a KX2 vs I and Q on a QRP Labs QMX QRP.
Lab 599 has a new radio based on the Wolfe transceiver.?
The Elecraft K2 has an accessory that will do digital and one that will do a panadapter.
Dave is working on doing a K4 remotely. The K40 is Elecraft’s top priority. Ekecraft is also working on a better noise reduction.


The topic for Thursday, 29 May will be Field Day.


The agenda for the 29 May QRP Chat:

  1. Ernie to do a short introduction and acknowledge any new folks to the Zoom chat.

  2. The topic for next May 29 will be Field Day.

During the open forum anyone can take the floor. We will go one by one until all have had a chance to have the floor. Files, pictures and presentations can be shared if you have any. Please try to stay muted when someone has the floor.
Thanks
Ed
AB8DF
Re: QRP Quarterly Mailing

 

Wow. It’s May 27th and I have not received mine!?#@!!

Ohio Zip 45373

Steve
AA8AF

On May 27, 2025, at 6:45?AM, Harry JL3AMK via groups.io <jl3amk-cw@...> wrote:

On Fri, 2 May 2025 18:23:32 -0400
"Brian KB9BVN via groups.io" <kb9bvn@...> wrote:
The April 2025 issue of the QRP Quarterly was mailed out on April 14th,
2025.
My QQ arrived today in Osaka, Japan.
Re: Four Days In May - FDIM Mailing

 

Hi -

I am the person responsible for doing the mailing. Due to other things that have come up in my life since coming home from Xenia, I have not even unloaded the car. I hope to get that and do the mailing tomorrow. I''ll post something here when the FDIM Proceedings are on the way.

--
73 - Bill - N8ET
Re: QRP Quarterly Mailing

 

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Thank you Harry.

Brian


On 5/27/2025 6:45 AM, Harry JL3AMK via groups.io wrote:

On Fri, 2 May 2025 18:23:32 -0400
"Brian KB9BVN via groups.io" <kb9bvn@...> wrote:

The April 2025 issue of the QRP Quarterly was mailed out on April 14th, 
2025.

My QQ arrived today in Osaka, Japan.

harry
--
JL3AMK #12260


--
72 de KB9BVN
Re: QRP Quarterly Mailing

 

On Fri, 2 May 2025 18:23:32 -0400
"Brian KB9BVN via groups.io" <kb9bvn@...> wrote:
The April 2025 issue of the QRP Quarterly was mailed out on April 14th,
2025.
My QQ arrived today in Osaka, Japan.

harry
--
JL3AMK #12260
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