Hi all,

I made some investigations about the temperature of my PI…

1. without any cooling - around 52 degrees Celsius
2. with a heatsink from an old PC stuck with cable ties - around 42 degrees Celsius
3. with heatsink and a fan, also from my old PC - around 30 degrees Celsius
   
   May be this is interesting for someone who use a PI in a close frame.

@tve 63.4 C? Could be less!
You can generate a simple protocol by using
crontab -e and enter

@reboot echo “---------- start ----------” >> proto.txt
*/5 * * * * date >> proto.txt
1-56/5 * * * * vcgencmd measure_temp >> proto.txt

which will write a timestamp and a celsius amount every 5 minutes…and an eyecatcher at every boot. Look after a while into the file.

@TvE Do you use some wires at the GPIO? For example a PIR-sensor? Than may be interferences causes the issue when an electronic device is around your PI.

Or it is the temperature? Check it with
vcgencmd measure_temp

@assassins Did you include a zip-process? If the backup is zipped, you can save additionally a lot of space.
Thomas

It’s a little bit off-topic to MM2, but don’t you juggle with your Raspis, SD-cards and images you made for backup? And sometimes, you want to restore a backup on a smaller SD-Card? I found a solution in the Internet, the script Pishrink reduces the size of images by deleting unused space and that within minutes. After the procedure, a (for example) previous 64GB image will be much smaller and can be copied to a much smaller SD-card (which is done by windiskimager faster than the original size, of course). Pishrink adds a parameter which expands the file-system automatically to the whole space on the SD during restoring.
You need Linux if you want to give it a try. If you use VirtualBox, please keep in mind that you can’t run Pishrink at the shared-folder, please copy the image into the VM first .
For LibreELEC and OpenELEC you need to use the switch -s…please use Google for more information.
You can find it here: https://github.com/Drewsif/PiShrink

…I’m not the developer!

@lhops for a small protocoll add the following lines to crontab
(enter crontab -e at the prompt):

@reboot echo “---- start ----” >> proto.txt
*/5 * * * * date >> proto.txt
*/5 * * * * vcgencmd measure_temp >> proto.txt

That moves the date and the temperature to a file called proto.txt every 5 minutes (and an eyecatcher at the start of the raspberry)

@fozi no, currently no 3D-printing, but may be in the future:-)

Didn’t I said, I’m not an electrician?
It is not a step-down/up … it is called Pull-Up, resp Pull-Down.
Please see here for detailed (german) explanation: https://www.elektronik-kompendium.de/sites/raspberry-pi/2006051.htm

@stefan723 May be, a so called “Step Down” resp. “Step Up”-resistor is needed. The PI has built-in Step Down/Up functionality.
The issue may arise due to interferencies from other parts around the sensor and the PI. First follow the idea of @Stefan723 and try to use short cables.
Use Google to search for “Step Down/Up and Raspberry PI”.

But I’m a programmer…not an electrician:-)

@olesoncrypto
Hi,
create a local html-file at the modules folder with the following content as an example, please add your webside instead of the google-chart:

Name it as you like (mychess.html for example) and add the path to MMM-SmartWebDisplay instead of the URL you entered before:

url: [“/modules/mychess.html”],

Play around with the red-marked values…the exact data depends on the browser in use.
This way is much easier than to adjust it directly in MMM-SmartWebDisplay.

Greetings
Thomas