Mika Virtala on LinkedIn: I had a little problem with my own Raspberry Pi. Its fan made a lot of… (2025)

Here's my test bench for this summer.

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Meetup in Joensuu 13th June.https://lnkd.in/dXwTtWf9

It’s been a while since I have written anything here. I’ve been a bit busy doing Python coding in our ICT development project. Although I have a statement of Achievement in Programming Essentials in Python provided by Cisco Networking Academy, signed no less than VP & General Manager of Cisco Networking Academy, I must say there were a lot to learn during this project. Recapping my rusted Python basics was one thing, the others were new like asyncio, logging, smtplib and cryptography to mention few. Phew, I’ve done all I can. Next week I’m just going to rest.

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I’ve been busy with the ICT development project. I did a small experiment and collected two times 10000 rows of data from five #RuuviTag using Raspberry Pi in the Wärtsilä campus. With that data I calculated the packet loss for our project’s RuuviTags. Two of those calculations gave 19 % loss. Still in the range of normal.I purchased earlier two RuuviTag for myself. Today I updated a Long-Life firmware to one of them. Easy to do when you have a good guide like found in the ruuvi.com software-update webpage. Measurement update interval is 63 seconds and that can be seen in the Ruuvi Station mobile app. So updating the firmware in project RuuviTags would be one suggestion to give to our customer to achieve longer battery life.I made a not so good Python program and cloned it from my personal GitLab repository to the Raspberry Pi computer in the campus for my test run (I hope the final project code will be much more organized). As for the actual project we use Azure repository in Azure DevOps.

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My two #RuuviTag devices arrived. I started one up. Mobile app is very easy to use.I tried the find-method in Python to see if it can find the RuuviTag. Had to install bleak to my Python project and now it seems to work.The ICT development project Raspberry Pi computer in campus found RuuviTags too after bleak installation and trying the very same async find-method in ruuvitag-sensor Python package.I made a test directory and cloned code from my Gitlab repository into the Raspberry. At least this way I can push code from my laptop to Gitlab and pull it into the Raspberry. Not an optimal solution, but a solution. I used venv to make a virtual environment for Python so that I didn't mess up the global installations.Next week our project work begins with "sprint 1". I hope that my findings help us with the actual application development. I almost can't wait to hear if others have done experiments and what they have found out.

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My 10-credit ICT Development Project course just started at Karelia. I ended up into a team with an assignment to develop a data collection solution for a #RuuviTag -sensors in the campus building. It senses temperature, humidity, air pressure and motion.I’m excited about this project. I couldn’t help myself, I had to already draw some Excalidraw-sketches of the system. I hope we can as a team and with our client have discussions about technical details and draw together a better sketch. At least for me it is important to visually see how the system works. From there it should be easier to start dive into the details.I also got the shiny object syndrome and acted upon it – I ordered two RuuviTags for myself to be used in my home. (No commercial sponsorship … yet).https://ruuvi.com/

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Some little things just grind my gears ever so slightly. Like how to get rid of these error notifications in NetBeans IDE? I don’t know. Googling says that delete the cache. I can’t be bothered to do that every time I make a change into class attributes or constructors. Well, nothing is perfect, I guess. I had a full working day with no un-helpful error messages – now it seems that they’re here to stay.

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