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HermannSW
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Joined: Fri Jul 22, 2016 9:09 pm
Location: Eberbach, Germany
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Qs on official Raspberry Pi [3]A+ Case

Sat Jun 22, 2019 2:46 pm

Today I received my first Pi 3A+ (have Pi0, Pi0W, 2B+, 3B and 3B+ models sofar).
Because buying Pi 3A+ plus official Raspberry Pi [3]A+ case allowed for free shipping, with cost less than the cost of Pi 3A+ alone plus shipping, I ordered both.

After installing Raspberry Pi Stretch and configuring camera/ssh/i2c, raspivid works fine.
I have not seen thermal warning sign displayed on HDMI monitor yet.
Is running Pi 3A+ with camera, USB wireless keyboard dongle, HDMI monitor connected and official Raspberry power supply expected to not produce thermal issues with closed case?

There are 4 screw mounts at bottom of the case, but neither Pi 3A+ nor official [3]A+ case came with screws. Is that normal?

The SD-card on one side and USB slot on the other side seem to fixate the Pi 3A+ in the case in such a way, that at least two screw mounts are inside the Pi 3A+ mounting holes. That seems to be firm enough when using the case normally. Later, when I will add the case on new T101 caterpillar robot platform I will use 4 screws to fixate the Pi 3A+ firmly to the case, that will be fixated on robot platform.

Why are there no free slots for camera and/or display ports?
That is not a big problem, my Dremel simply added the needed camera cable slot:
Image


P.S:
I added

Code: Select all

hdmi_group=2  # DMT
hdmi_mode=39  # 1360x768 60Hz
to /boot/config.txt and rebooted. Now HDMI resolution matches what the (old) HDMI monitor can do.
I played youtube videos in Chromium webbrowser (with audio to HDMI monitor) for quite some time now.
With youtube fullscreen mode, the display is a bit pixelized, but no video nor audio dropouts.
Still no thermal warning sign on HDMI monitor ...

P.P.S:
After more than an hour of playing fullscreen youtube as described, "vcgencmd measure_temp" reports temperatures between 61° and 63°. Total CPU utilization of the 4 cores (3 chromium-browse processes, Xorg, ...) is around 23%. Measured arm frequency is 1200000000 (configured arm_freq is 1400, gpu_freq is 300). Seems to be safe temperature wise to run 3A+ long time in case ...
⇨https://stamm-wilbrandt.de/en/Raspberry_camera.html

https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://gitlab.freedesktop.org/HermannSW/gst-template
https://github.com/Hermann-SW/fork-raspiraw
https://twitter.com/HermannSW

Andyroo
Posts: 4502
Joined: Sat Jun 16, 2018 12:49 am
Location: Lincs U.K.

Re: Qs on official Raspberry Pi [3]A+ Case

Sat Jun 22, 2019 9:19 pm

I read that as you took the Dremel to the board not the case :oops:

Got so used to using these headless or via a web page I must try it as a desktop one day...

Edit: Corrected auto correct :roll:
Last edited by Andyroo on Sun Jun 23, 2019 2:09 am, edited 1 time in total.
Need Pi spray - these things are breeding in my house...

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HermannSW
Posts: 1502
Joined: Fri Jul 22, 2016 9:09 pm
Location: Eberbach, Germany
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Re: Qs on official Raspberry Pi [3]A+ Case

Sun Jun 23, 2019 12:35 am

Andyroo wrote:
Sat Jun 22, 2019 9:19 pm
Got so used to using these headless or via a web page I must try it as a desktop one day...
Most of the time I use the Pi3A+ headless via ssh as well (like my other PIs).

You may ask why to connect HDMI monitor in that case ‒ for me the reason is raspi(vid|still) camera preview.

I need to install omxiv image viewer, not only because it is fast (GPU), but because I can run it in ssh session and image shows on HDMI monitor, regardless on whether the Pi3A+ shows X11 or console display.

Just now I found new application of HDMI monitor as magnification glass for very small pin connection verification using ohmmeter (which is not possible with 2.5 dpt. glasses I use for soldering):
https://www.esp32.com/viewtopic.php?f=1 ... 340#p45340
Image
⇨https://stamm-wilbrandt.de/en/Raspberry_camera.html

https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://gitlab.freedesktop.org/HermannSW/gst-template
https://github.com/Hermann-SW/fork-raspiraw
https://twitter.com/HermannSW

alphanumeric
Posts: 2070
Joined: Tue Jan 19, 2016 2:17 pm
Location: Sydney, Nova Scotia, Canada

Re: Qs on official Raspberry Pi [3]A+ Case

Thu Jul 04, 2019 3:59 pm

Those aren't screw holes on the bottom, as far as I know thats where the four stick on rubber feet go.
I don't have the 3A+ case but I do have one of the original 3B cases. No camera cable slot in that one either. I did the same thing, I got my dremel out and made one. Mine is in the top cover though, not out the side.

EDIT: My 3A+'s are all in Black Pibow Coupe cases. https://shop.pimoroni.com/products/pib ... 88061267 I went with those because they have nice airflow, and have the heatsink and camera cable etc cutouts all done for you.
My cameras are mounted to the back side of black difussers cut to fit those cases and mounted with the extended bolt pack. They all run motion eye OS headless as surveillance cameras.

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HermannSW
Posts: 1502
Joined: Fri Jul 22, 2016 9:09 pm
Location: Eberbach, Germany
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Re: Qs on official Raspberry Pi [3]A+ Case

Sun Jul 21, 2019 3:07 pm

Today I took the 7" DPI display that was unused for 1 year since last vacation in Denmark, and prepared some PIs for the upcoming vacation:
https://www.raspberrypi.org/forums/view ... 6#p1504536

While the RGB LCD Hat does fit into the 3A+ case when viewed from top, the left and right ribs of case cover do not allow to close the cover:
Image


The plan was to cut a hole into the case for the display flex cable.
I would have to Dremel away parts of cover left and right rib as well.
Because of cover top rib it would be best to cut the display flex cable hole into the case cover.
Then holes on left and right would be needed for backlight switch.
Finally the hat board itself is just too high and need to be cut out as well.

While that all would be a nice Dremel practice, I hust decided to run the Pi 3A+ in case, but without cover for the 3 weeks of vacation ...
⇨https://stamm-wilbrandt.de/en/Raspberry_camera.html

https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://gitlab.freedesktop.org/HermannSW/gst-template
https://github.com/Hermann-SW/fork-raspiraw
https://twitter.com/HermannSW

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