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T41 partially thawed
开云体育I removed the Arduino IDE 2.3.4 and reinstalled it along with
Teensyduino and the libraries. I compiled SDTVer50.2 and it loaded
and ran. Everything worked. Thought problem was fixed so I
compiled and loaded SDT Ver66.7. It froze at random points every
time I restarted it. I went back to the SDTVer50.2 and recompiled
and it froze this time. What's going on? Then I realized that the
first time I compiled the SDTVer50.2 I had forgotten to change the
compile options to those suggested (Faster with LTO, 528 MHz and
Serial). It was set for Faster and 600MHz. I compiled again with
the Faster and 600MHz and it ran fine. I tried compiling SDTVer66.1 with Faster and 600MHz. Compile
failed with an out of memory message. Tried SDTVer66.1 with Faster
with LTO and 528MHz. Compiles but freezes. It ran prior to this,
hardware wasn't changed, so I don't know what it takes to run the
Ver66 code. Is Arduino IDE 2.3.4 what others are using? 73
Bob W3RDL |
What happens if you compile with the smallest code option? In the compile statistics, what values do you see Memory Usage on Teensy 4.1: ? FLASH: code:10228, data:3016, headers:8256?? free for files:8104964 ?? RAM1: variables:3808, code:7664, padding:25104?? free for local variables:487712 ?? RAM2: variables:12416? free for malloc/new:511872 (These data are for the ASCII table example program.) Jack, W8TEE
On Saturday, March 15, 2025 at 10:28:04 PM EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:
I removed the Arduino IDE 2.3.4 and reinstalled it along with
Teensyduino and the libraries. I compiled SDTVer50.2 and it loaded
and ran. Everything worked. Thought problem was fixed so I
compiled and loaded SDT Ver66.7. It froze at random points every
time I restarted it. I went back to the SDTVer50.2 and recompiled
and it froze this time. What's going on? Then I realized that the
first time I compiled the SDTVer50.2 I had forgotten to change the
compile options to those suggested (Faster with LTO, 528 MHz and
Serial). It was set for Faster and 600MHz. I compiled again with
the Faster and 600MHz and it ran fine. I tried compiling SDTVer66.1 with Faster and 600MHz. Compile
failed with an out of memory message. Tried SDTVer66.1 with Faster
with LTO and 528MHz. Compiles but freezes. It ran prior to this,
hardware wasn't changed, so I don't know what it takes to run the
Ver66 code. Is Arduino IDE 2.3.4 what others are using? 73
Bob W3RDL -- Jack, W8TEE |
开云体育Jack, I recompiled SDTVer066.1_2-24_25 (Arduino IDE 2.3.4) unmodified(original config.h) with: Smallest Code with LTO 528MHz Serial Statistics: Memory Usage on Teensy 4.1: Compiled with Smallest code Memory Usage on Teensy 4.1: The header in the .ino file says it should be: Memory Usage on Teensy 4.1: ? ?RAM1: variables:219584, code:210408, padding:18968 ? free for local variables:75328 ? ?RAM2: variables:409920 ?free for malloc/new:114368 I don't know what this means, but if I run from a cold start(CPU Temp ~ 30C, it runs for about 15 secs, Temp 32.5C.
The hotter it is the shorter the run time.
Running with the Ver50.x, it stabilizes ~41C and runs fine.
All of the Ver66.x releases have run before with Faster with LTO and I was able to go through the Freq and Receive IQ cal.
Also between Ver 50.x and 66.x the Tx and Rx LEDs are swapped.
On 3/16/2025 9:48 AM, jjpurdum via
groups.io wrote:
-- 73 Bob W3rdl |
The stack space is probably large enough here not to be a problem. The other version make me uncertain. My system is still in parts as Al and I are finishing up the last update for the book. I'm still a week away from a working system.. Jack, W8TEE
On Sunday, March 16, 2025 at 11:15:46 AM EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:
Jack, I recompiled SDTVer066.1_2-24_25 (Arduino IDE 2.3.4) unmodified(original config.h) with: Smallest Code with LTO 528MHz Serial Statistics: Memory Usage on Teensy 4.1: Compiled with Smallest code Memory Usage on Teensy 4.1: The header in the .ino file says it should be: Memory Usage on Teensy 4.1: ? ?RAM1: variables:219584, code:210408, padding:18968 ? free for local variables:75328 ? ?RAM2: variables:409920 ?free for malloc/new:114368 I don't know what this means, but if I run from a cold start(CPU Temp ~ 30C, it runs for about 15 secs, Temp 32.5C.
The hotter it is the shorter the run time.
Running with the Ver50.x, it stabilizes ~41C and runs fine.
All of the Ver66.x releases have run before with Faster with LTO and I was able to go through the Freq and Receive IQ cal.
Also between Ver 50.x and 66.x the Tx and Rx LEDs are swapped.
On 3/16/2025 9:48 AM, jjpurdum via
groups.io wrote:
What happens if you compile
with the smallest code option? In the compile statistics, what
values do you see
Memory Usage on Teensy 4.1:
? FLASH: code:10228, data:3016, headers:8256?? free for files:8104964 ?? RAM1: variables:3808, code:7664, padding:25104?? free for local variables:487712 ?? RAM2: variables:12416? free for malloc/new:511872 (These data are for the
ASCII table example program.)
Jack, W8TEE
On Saturday, March 15, 2025 at 10:28:04 PM EDT, Robert
Luken W3RDL via groups.io
<now.w3rdl@...> wrote:
I removed the Arduino IDE 2.3.4 and reinstalled it
along with Teensyduino and the libraries. I compiled
SDTVer50.2 and it loaded and ran. Everything worked.
Thought problem was fixed so I compiled and loaded
SDT Ver66.7. It froze at random points every time I
restarted it. I went back to the SDTVer50.2 and
recompiled and it froze this time. What's going on?
Then I realized that the first time I compiled the
SDTVer50.2 I had forgotten to change the compile
options to those suggested (Faster with LTO, 528 MHz
and Serial). It was set for Faster and 600MHz. I
compiled again with the Faster and 600MHz and it ran
fine. I tried compiling SDTVer66.1 with Faster and
600MHz. Compile failed with an out of memory
message. Tried SDTVer66.1 with Faster with LTO and
528MHz. Compiles but freezes. It ran prior to this,
hardware wasn't changed, so I don't know what it
takes to run the Ver66 code. Is Arduino IDE 2.3.4
what others are using? 73 Bob W3RDL -- Jack, W8TEE -- 73 Bob W3rdl -- Jack, W8TEE |
开云体育Jack, thanks for the help. I'm still trying to figure out what has changed. All of the SDT Versions were working until I changed the position of the Temp display and compiled. There was a popup message about some libraries had updates and I made the mistake of clicking ok. Every version freezes now. The only exception is Ver50.2 when compiled with Faster and not Faster with LTO.? I reinstalled the IDE and all of the libraries, but they were probably the latest versions, so if it's a new library version, I have no idea which one. I did some more tests Ver50.2
: Version 66.1: It appears that system runs at 600MHz and freezes at 528MHz. On 3/16/2025 2:21 PM, jjpurdum via
groups.io wrote:
--
73
Bob W3RDL |
Robert: I wouldn't do it yet, but over the years I've had to reinstall everything from the IDE to the TeensyDuino to all the libraries. After doing that, it worked. I have no clue why...it just did. I've worked 40 of the last 48 hours on Al's edits to the book, plus adding my own. This will be the last update for the book. If I work a few more hours tonight, I should have only 3 chapters to go, which I'll hopefully finish tomorrow night. Then I'll get back to finishing my T41 and can start testing it again. I'll keep you posted. Jack, W8TEE
On Sunday, March 16, 2025 at 08:10:19 PM EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:
Jack, thanks for the help. I'm still trying to figure out what has changed. All of the SDT Versions were working until I changed the position of the Temp display and compiled. There was a popup message about some libraries had updates and I made the mistake of clicking ok. Every version freezes now. The only exception is Ver50.2 when compiled with Faster and not Faster with LTO.? I reinstalled the IDE and all of the libraries, but they were probably the latest versions, so if it's a new library version, I have no idea which one. I did some more tests Ver50.2
: Version 66.1: It appears that system runs at 600MHz and freezes at 528MHz. On 3/16/2025 2:21 PM, jjpurdum via
groups.io wrote:
The stack space is probably
large enough here not
to be a problem. The other version make me uncertain. My
system is still in parts as Al and I are finishing up the last
update for the book. I'm still a week away from a working
system..
Jack, W8TEE
On Sunday, March 16, 2025 at 11:15:46 AM EDT, Robert
Luken W3RDL via groups.io
<now.w3rdl@...> wrote:
Jack, I recompiled SDTVer066.1_2-24_25 (Arduino IDE 2.3.4) unmodified(original config.h) with: Smallest Code with LTO 528MHz Serial Statistics: Memory Usage on Teensy 4.1: Compiled with Smallest code Memory Usage on Teensy 4.1: The header in the
.ino file says it should be:
Memory Usage on
Teensy 4.1:
? ?RAM1:
variables:219584, code:210408, padding:18968 ?
free for local variables:75328
? ?RAM2:
variables:409920 ?free for malloc/new:114368
I
don't know what this means, but if I run from a cold
start(CPU Temp ~ 30C, it runs for about 15 secs,
Temp 32.5C.
The
hotter it is the shorter the run time.
Running
with the Ver50.x, it stabilizes ~41C and runs fine.
All
of the Ver66.x releases have run before with Faster
with LTO and I was able to go through the Freq and
Receive IQ cal.
Also
between Ver 50.x and 66.x the Tx and Rx LEDs are
swapped.
On
3/16/2025 9:48 AM, jjpurdum via groups.io wrote:
What happens if you compile with the
smallest code option? In the compile statistics,
what values do you see
Memory Usage on Teensy 4.1:
? FLASH: code:10228, data:3016, headers:8256?? free for files:8104964 ?? RAM1: variables:3808, code:7664, padding:25104?? free for local variables:487712 ?? RAM2: variables:12416? free for malloc/new:511872 (These data are for the ASCII table
example program.)
Jack, W8TEE
On Saturday, March 15, 2025 at 10:28:04 PM
EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...>
wrote:
I removed the Arduino IDE 2.3.4 and
reinstalled it along with Teensyduino
and the libraries. I compiled SDTVer50.2
and it loaded and ran. Everything
worked. Thought problem was fixed so I
compiled and loaded SDT Ver66.7. It
froze at random points every time I
restarted it. I went back to the
SDTVer50.2 and recompiled and it froze
this time. What's going on? Then I
realized that the first time I compiled
the SDTVer50.2 I had forgotten to change
the compile options to those suggested
(Faster with LTO, 528 MHz and Serial).
It was set for Faster and 600MHz. I
compiled again with the Faster and
600MHz and it ran fine. I tried compiling SDTVer66.1 with
Faster and 600MHz. Compile failed with
an out of memory message. Tried
SDTVer66.1 with Faster with LTO and
528MHz. Compiles but freezes. It ran
prior to this, hardware wasn't changed,
so I don't know what it takes to run the
Ver66 code. Is Arduino IDE 2.3.4 what
others are using? 73 Bob W3RDL -- Jack, W8TEE -- 73 Bob W3rdl -- Jack, W8TEE -- 73
Bob W3RDL -- Jack, W8TEE |
开云体育Jack, thanks again for the help. Actually I already removed and
reinstalled the IDE and everything else. I had a problem like this
before and doing that fixed it, but not this time. Maybe I should
delete everything and start with a clean slate. Good luck on the
book. Did you need any updated drawings? On 3/16/2025 9:25 PM, jjpurdum via
groups.io wrote:
--
73
Bob W3RDL |
Robert: Thanks for the offer, but I think we're okay. If not, I'll let you know. When I'm back on line, I'll let you know if I find anything that might be helpful. I feel badly it's taken this long, but this last bout with Covid really knocked the slats out from under me. I still can't get rid of the cough and I'm tired all the time. Perhaps part of that is because I'm two years younger than dirt. Jack, W8TEE
On Sunday, March 16, 2025 at 09:34:53 PM EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:
Jack, thanks again for the help. Actually I already removed and
reinstalled the IDE and everything else. I had a problem like this
before and doing that fixed it, but not this time. Maybe I should
delete everything and start with a clean slate. Good luck on the
book. Did you need any updated drawings? On 3/16/2025 9:25 PM, jjpurdum via
groups.io wrote:
Robert:
I wouldn't do it yet, but
over the years I've had to reinstall everything from the IDE
to the TeensyDuino to all the libraries. After doing that, it
worked. I have no clue why...it just did. I've worked 40 of
the last 48 hours on Al's edits to the book, plus adding my
own. This will be the last update for the book. If I work a
few more hours tonight, I should have only 3 chapters to go,
which I'll hopefully finish tomorrow night. Then I'll get back
to finishing my T41 and can start testing it again. I'll keep
you posted.
Jack, W8TEE
On Sunday, March 16, 2025 at 08:10:19 PM EDT, Robert
Luken W3RDL via groups.io
<now.w3rdl@...> wrote:
Jack, thanks for the help. I'm still trying to figure out what has changed. All of the SDT Versions were working until I changed the position of the Temp display and compiled. There was a popup message about some libraries had updates and I made the mistake of clicking ok. Every version freezes now. The only exception is Ver50.2 when compiled with Faster and not Faster with LTO.? I reinstalled the IDE and all of the libraries, but they were probably the latest versions, so if it's a new library version, I have no idea which one. I did some more tests Ver50.2 : Version 66.1: It appears that system runs at 600MHz and freezes
at 528MHz. On
3/16/2025 2:21 PM, jjpurdum via groups.io wrote:
The stack space is probably large
enough here
not to be a problem. The other version make me
uncertain. My system is still in parts as Al and I
are finishing up the last update for the book. I'm
still a week away from a working system..
Jack, W8TEE
On Sunday, March 16, 2025 at 11:15:46 AM
EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...>
wrote:
Jack, I recompiled SDTVer066.1_2-24_25 (Arduino IDE 2.3.4) unmodified(original config.h) with: Smallest Code with LTO 528MHz Serial Statistics: Memory Usage on Teensy 4.1: Compiled with Smallest code Memory Usage on Teensy 4.1: The
header in the .ino file says it
should be:
Memory
Usage on Teensy 4.1:
?
?RAM1: variables:219584,
code:210408, padding:18968 ? free
for local variables:75328
?
?RAM2: variables:409920 ?free for
malloc/new:114368
I
don't know what this means, but if I run
from a cold start(CPU Temp ~ 30C, it
runs for about 15 secs, Temp 32.5C.
The
hotter it is the shorter the run time.
Running
with the Ver50.x, it stabilizes ~41C and
runs fine.
All
of the Ver66.x releases have run before
with Faster with LTO and I was able to
go through the Freq and Receive IQ cal.
Also
between Ver 50.x and 66.x the Tx and Rx
LEDs are swapped.
On
3/16/2025 9:48 AM, jjpurdum via
groups.io wrote:
What happens if you
compile with the smallest code option?
In the compile statistics, what values
do you see
Memory Usage on Teensy 4.1:
? FLASH: code:10228, data:3016, headers:8256?? free for files:8104964 ?? RAM1: variables:3808, code:7664, padding:25104?? free for local variables:487712 ?? RAM2: variables:12416? free for malloc/new:511872 (These data are for the
ASCII table example program.)
Jack, W8TEE
On Saturday, March 15, 2025 at
10:28:04 PM EDT, Robert Luken
W3RDL via groups.io <now.w3rdl@...>
wrote:
I removed the Arduino IDE
2.3.4 and reinstalled it
along with Teensyduino and
the libraries. I compiled
SDTVer50.2 and it loaded and
ran. Everything worked.
Thought problem was fixed so
I compiled and loaded SDT
Ver66.7. It froze at random
points every time I
restarted it. I went back to
the SDTVer50.2 and
recompiled and it froze this
time. What's going on? Then
I realized that the first
time I compiled the
SDTVer50.2 I had forgotten
to change the compile
options to those suggested
(Faster with LTO, 528 MHz
and Serial). It was set for
Faster and 600MHz. I
compiled again with the
Faster and 600MHz and it ran
fine. I tried compiling
SDTVer66.1 with Faster and
600MHz. Compile failed with
an out of memory message.
Tried SDTVer66.1 with Faster
with LTO and 528MHz.
Compiles but freezes. It ran
prior to this, hardware
wasn't changed, so I don't
know what it takes to run
the Ver66 code. Is Arduino
IDE 2.3.4 what others are
using? 73 Bob W3RDL -- Jack, W8TEE -- 73 Bob W3rdl -- Jack, W8TEE --
73 Bob W3RDL -- Jack, W8TEE -- 73
Bob W3RDL -- Jack, W8TEE |
开云体育Jack, sorry to hear about the Covid, Paxlovid is the only way to
go, but you have to take it within a couple of days. I caught it
at 79 and was feeling pretty good after three days, gone in 5. On 3/16/2025 9:43 PM, jjpurdum via
groups.io wrote:
--
73
Bob W3RDL |
I've had Covid three times now and the second one I used Palovid and it was wonderful. I should have had a prescription for this last round, but for some reason I didn't. Big mistake. Jack, W8TEE
On Sunday, March 16, 2025 at 09:51:53 PM EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:
Jack, sorry to hear about the Covid, Paxlovid is the only way to
go, but you have to take it within a couple of days. I caught it
at 79 and was feeling pretty good after three days, gone in 5. On 3/16/2025 9:43 PM, jjpurdum via
groups.io wrote:
Robert:
Thanks for the offer, but I
think we're okay. If not, I'll let you know. When I'm back on
line, I'll let you know if I find anything that might be
helpful. I feel badly it's taken this long, but this last bout
with Covid really knocked the slats out from under me. I still
can't get rid of the cough and I'm tired all the time. Perhaps
part of that is because I'm two years younger than dirt.
Jack, W8TEE
On Sunday, March 16, 2025 at 09:34:53 PM EDT, Robert
Luken W3RDL via groups.io
<now.w3rdl@...> wrote:
Jack, thanks again for the help. Actually I already
removed and reinstalled the IDE and everything else.
I had a problem like this before and doing that
fixed it, but not this time. Maybe I should delete
everything and start with a clean slate. Good luck
on the book. Did you need any updated drawings? On
3/16/2025 9:25 PM, jjpurdum via groups.io wrote:
Robert:
I wouldn't do it yet, but over the
years I've had to reinstall everything from the
IDE to the TeensyDuino to all the libraries. After
doing that, it worked. I have no clue why...it
just did. I've worked 40 of the last 48 hours on
Al's edits to the book, plus adding my own. This
will be the last update for the book. If I work a
few more hours tonight, I should have only 3
chapters to go, which I'll hopefully finish
tomorrow night. Then I'll get back to finishing my
T41 and can start testing it again. I'll keep you
posted.
Jack, W8TEE
On Sunday, March 16, 2025 at 08:10:19 PM
EDT, Robert Luken W3RDL via groups.io <now.w3rdl@...>
wrote:
Jack, thanks for the help. I'm still trying to figure out what has changed. All of the SDT Versions were working until I changed the position of the Temp display and compiled. There was a popup message about some libraries had updates and I made the mistake of clicking ok. Every version freezes now. The only exception is Ver50.2 when compiled with Faster and not Faster with LTO.? I reinstalled the IDE and all of the libraries, but they were probably the latest versions, so if it's a new library version, I have no idea which one. I did some more tests Ver50.2 : Version 66.1: It appears that system runs at 600MHz
and freezes at 528MHz. On
3/16/2025 2:21 PM, jjpurdum via
groups.io wrote:
The stack space is
probably large enough here not to be a
problem. The other version make me
uncertain. My system is still in parts
as Al and I are finishing up the last
update for the book. I'm still a week
away from a working system..
Jack, W8TEE
On Sunday, March 16, 2025 at
11:15:46 AM EDT, Robert Luken
W3RDL via groups.io <now.w3rdl@...>
wrote:
Jack, I recompiled SDTVer066.1_2-24_25 (Arduino IDE 2.3.4) unmodified(original config.h) with: Smallest Code with LTO 528MHz Serial Statistics: Memory Usage on Teensy 4.1: Compiled with Smallest code Memory Usage on Teensy 4.1: The
header in the .ino file
says it should be:
Memory
Usage on Teensy 4.1:
?
?RAM1: variables:219584,
code:210408,
padding:18968 ? free for
local variables:75328
?
?RAM2: variables:409920
?free for
malloc/new:114368
I
don't know what this means,
but if I run from a cold
start(CPU Temp ~ 30C, it
runs for about 15 secs, Temp
32.5C.
The
hotter it is the shorter the
run time.
Running
with the Ver50.x, it
stabilizes ~41C and runs
fine.
All
of the Ver66.x releases have
run before with Faster with
LTO and I was able to go
through the Freq and Receive
IQ cal.
Also
between Ver 50.x and 66.x
the Tx and Rx LEDs are
swapped.
On
3/16/2025 9:48 AM, jjpurdum
via groups.io wrote:
What happens
if you compile with the
smallest code option? In
the compile statistics,
what values do you see
Memory Usage on
Teensy 4.1:
? FLASH: code:10228, data:3016, headers:8256?? free for files:8104964 ?? RAM1: variables:3808, code:7664, padding:25104?? free for local variables:487712 ?? RAM2: variables:12416? free for malloc/new:511872 (These data
are for the ASCII table
example program.)
Jack, W8TEE
On Saturday, March
15, 2025 at 10:28:04
PM EDT, Robert Luken
W3RDL via groups.io <now.w3rdl@...>
wrote:
I removed the
Arduino IDE
2.3.4 and
reinstalled it
along with
Teensyduino and
the libraries. I
compiled
SDTVer50.2 and
it loaded and
ran. Everything
worked. Thought
problem was
fixed so I
compiled and
loaded SDT
Ver66.7. It
froze at random
points every
time I restarted
it. I went back
to the
SDTVer50.2 and
recompiled and
it froze this
time. What's
going on? Then I
realized that
the first time I
compiled the
SDTVer50.2 I had
forgotten to
change the
compile options
to those
suggested
(Faster with
LTO, 528 MHz and
Serial). It was
set for Faster
and 600MHz. I
compiled again
with the Faster
and 600MHz and
it ran fine. I tried
compiling
SDTVer66.1 with
Faster and
600MHz. Compile
failed with an
out of memory
message. Tried
SDTVer66.1 with
Faster with LTO
and 528MHz.
Compiles but
freezes. It ran
prior to this,
hardware wasn't
changed, so I
don't know what
it takes to run
the Ver66 code.
Is Arduino IDE
2.3.4 what
others are
using? 73 Bob W3RDL -- Jack, W8TEE -- 73 Bob W3rdl -- Jack, W8TEE --
73 Bob W3RDL -- Jack, W8TEE --
73 Bob W3RDL -- Jack, W8TEE -- 73
Bob W3RDL -- Jack, W8TEE |
Robert:
?
Downloaded and compiled version 66.7 here. Works ok and no freeze. (Still clicks when tuning though.)
What helped with me is keeping the Teensy cool. I use a small fan in Justin's kit. Without fan version 66.2 also froze.
?
Kees, PA0KME
?
Faster with LTO, 600mHz , Dual serial
?
Memory Usage on Teensy 4.1: ? FLASH: code:311516, data:133432, headers:8676 ? free for files:7672840 ? ?RAM1: variables:195712, code:287880, padding:7032 ? free for local variables:33664 ? ?RAM2: variables:483744 ?free for malloc/new:40544 |
What happens with a 528MHz clock and smallest code? This seems a tad small. Jack, W8TEE
On Monday, March 17, 2025 at 12:25:50 PM EDT, Kees Mos via groups.io <kmos3@...> wrote:
Robert:
?
Downloaded and compiled version 66.7 here. Works ok and no freeze. (Still clicks when tuning though.)
What helped with me is keeping the Teensy cool. I use a small fan in Justin's kit. Without fan version 66.2 also froze.
?
Kees, PA0KME
?
Faster with LTO, 600mHz , Dual serial
?
Memory Usage on Teensy 4.1:
? FLASH: code:311516, data:133432, headers:8676 ? free for files:7672840 ? ?RAM1: variables:195712, code:287880, padding:7032 ? free for local variables:33664 ? ?RAM2: variables:483744 ?free for malloc/new:40544 -- Jack, W8TEE |
On 2025-03-17 09:25, Kees Mos via groups.io wrote:
Robert:*** I keep mine cool by eliminating sources of heat. I replaced the linear 3-terminal regulators with Murata switchers. No fan, no freezes. Can't hear any noise from them. Any noise is drowned out by the noise from the display. And the noise from the display is drowned out by band noise. - Jerry, KF6VB Kees, PA0KME |
开云体育Kees, thanks for the input. I have a 40mm Noctua fan for the Teensy and a 30mm fan mounted on the heatsinks. Temp runs 41.9C to 42.5C. I noticed that you're running at 46.4C. I'm not sure that temperature is a major factor since I could previously run all versions up to 66.7. Now most versions only run at 600MHz. I think I still have a library problem so I'll probably do a clean (delete) rebuild of the IDE and libraries.On 3/17/2025 12:25 PM, Kees Mos via
groups.io wrote:
--
73
Bob W3RDL |
开云体育Jerry, I plan on building a new Main board with the regulators
and heatsinks on the rear of the board so any heat from them
doesn't go directly to the Teensy. I may try the switchers. My
temp - ~42C in an air-conditioned room, would like more margin if
used outdoors. On 3/17/2025 1:38 PM, jerry-KF6VB via
groups.io wrote:
On 2025-03-17 09:25, Kees Mos via groups.io wrote: --
73
Bob W3RDL |
开云体育Jerry, do you have the part numbers for the regulators that you
used? On 3/17/2025 1:38 PM, jerry-KF6VB via
groups.io wrote:
On 2025-03-17 09:25, Kees Mos via groups.io wrote: --
73
Bob W3RDL |
On 2025-03-17 17:29, Robert Luken W3RDL via groups.io wrote:
Jerry, do you have the part numbers for the regulators that you used?OKI-78SR-5/1.5-W36-C OKI-78SR-3.3/1.5-W36H-C They cost about $5 apiece. The 5V one is a direct drop-in. For the 3.3V one, you have to switch the wiring on two of the pins. Actually, you shift the regulator over one pin and put a little wire to one of the pins. Because for some unfathomable reason, linear 3v3 regulators don't have the standard 7805 pinout. - Jerry, KF6VB |