Your Raspberry Pi Projects

Hi All
I have a few questions about Raspberry Pi 4s and would really appreciate your input.
I work in an environment where, amongst other things, we use Raspberry Pi to run certain devices and instruments. Currently we have more than 200 Raspberry Pi units rolled out across the country and these are mostly made up of Raspberry Pi 3 and 3B's.

At one stage, about 2 years ago, we were looking at moving over to Raspberry Pi 4 units as we were told that the Pi3s were going off the market, and later due to Covid, Pi3 units were more difficult to get. Problem we faced then was that apparently the Pi4 ran much hotter than the Pi3. Thus either a very good fan was needed (Ice fan) if you're using standard plastic case or we had to get a special aluminum case (Flirc) which also acted as a heatsink and no fan was needed.

Our Raspberry Pi 3 units run 24/7/365 and due to the environment, it's not advisable to use fans as it is quite dusty or the Pi units are hidden behind these instruments. We are now revisiting the idea of using the Pi 4 again and need to start development with the Pi 4.

My question for those running Raspberry Pi 4 devices are as follows:
1) Are you experiencing any heat issues running the Pi4?
2) If you have, how have you overcome these issues?
3) Are you running your Pi 4 24/7.
4) Are you using a normal standard Pi case or other plastic case with or without a fan?
5) When I did my research at that time, Flirc cases were not readily availabale in SA so we had to import a few and was limited to 5 per order. Are there any other Flirc type case that you can recommend which dissipates heat easily without the need for a fan?

After a while Pi3/3B stock became more readily available again so we kept using them but due to technical changes we need more powerful units hence the Pi 4.

Your input is very much appreciated.

Thank you.
This is really interesting. I'm in a similar situation, about 70 Pi 3Bs out in the field, enclosed, running 24/7, although not running into any stock issues at the moment so no need to go to the 4B. I have one 4B at home, but it has a fan and heatsinks so runs very cool. You might consider the underclocking suggested here with big heatsinks https://www.raspberrypi.org/forums/...sid=addb2efbf3cd0f562021e373647e2c97&start=25
Please report back with what you try, I will be very interested.
 
This is really interesting. I'm in a similar situation, about 70 Pi 3Bs out in the field, enclosed, running 24/7, although not running into any stock issues at the moment so no need to go to the 4B. I have one 4B at home, but it has a fan and heatsinks so runs very cool. You might consider the underclocking suggested here with big heatsinks https://www.raspberrypi.org/forums/...sid=addb2efbf3cd0f562021e373647e2c97&start=25
Please report back with what you try, I will be very interested.
Since my last post I contacted Communica about options for the Raspberry Pi4. They are my local suppliers in Cape Town for the last few years in case we need to return any faulty components. Anyway they now sell the aluminium cases similar to the Flirc case that doesn't need a fan. They also sell an aluminium case with a fan.
I've placed an order for a Raspberry Pi 4B with 4GB memory and the aluminium case that does not need the fan and will be testing it soon just to make sure that we get the same cooling results as we did with the Flirc. The design of this case looks similar to the Flirc so I don't see any problems.

 
This is really interesting. I'm in a similar situation, about 70 Pi 3Bs out in the field, enclosed, running 24/7, although not running into any stock issues at the moment so no need to go to the 4B. I have one 4B at home, but it has a fan and heatsinks so runs very cool. You might consider the underclocking suggested here with big heatsinks https://www.raspberrypi.org/forums/...sid=addb2efbf3cd0f562021e373647e2c97&start=25
Please report back with what you try, I will be very interested.

What are they used for?
 
Field work

A little more info... We are all makers here, don't answer like a politician lol.

Are you monitoring sewage levels are you providing free wifi, are you managing other sensors and what do they measure.

Entertain our creative brains.
 
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Reactions: rrh
A little more info... We are all makers here, don't answer like a politician lol.

Are you monitoring sewage levels are you providing free wifi, are you managing other sensors and what do they measure.

Entertain our creative brains.
I believe he is into Electrical Engineering, so yes - entertain our brains ! @Jaws677
 
This is really interesting. I'm in a similar situation, about 70 Pi 3Bs out in the field, enclosed, running 24/7, although not running into any stock issues at the moment so no need to go to the 4B. I have one 4B at home, but it has a fan and heatsinks so runs very cool. You might consider the underclocking suggested here with big heatsinks https://www.raspberrypi.org/forums/...sid=addb2efbf3cd0f562021e373647e2c97&start=25
Please report back with what you try, I will be very interested.

Since my last post I contacted Communica about options for the Raspberry Pi4. They are my local suppliers in Cape Town for the last few years in case we need to return any faulty components. Anyway they now sell the aluminium cases similar to the Flirc case that doesn't need a fan. They also sell an aluminium case with a fan.
I've placed an order for a Raspberry Pi 4B with 4GB memory and the aluminium case that does not need the fan and will be testing it soon just to make sure that we get the same cooling results as we did with the Flirc. The design of this case looks similar to the Flirc so I don't see any problems.


I use one of these. Haven't even gotten around to putting on thermal paste yet but no problems so far on a Pi4 4GB model. (I don't really stress it though).
BTW, re your original post - the Pi3 won't go out of production - Pi Foundation always keeps old Pi's in production for exactly this reason - industrial users.

(About 200 bucks from https://www.robotics.org.za/LT-4BA02?search=lt-4ba02)

1631532477897.png
 
I use one of these. Haven't even gotten around to putting on thermal paste yet but no problems so far on a Pi4 4GB model. (I don't really stress it though).
BTW, re your original post - the Pi3 won't go out of production - Pi Foundation always keeps old Pi's in production for exactly this reason - industrial users.

(About 200 bucks from https://www.robotics.org.za/LT-4BA02?search=lt-4ba02)

View attachment 1146710

i wonder how much cheaper it would be to mold and order that from a factory oneself?

Like say you wanted 100 of those cases at a time, all savings helps

Like what is the cost of materials for this
 
i wonder how much cheaper it would be to mold and order that from a factory oneself?

Like say you wanted 100 of those cases at a time, all savings helps

Like what is the cost of materials for this
No idea but it is a solid block of aluminium. The other side is grooved (in case you didn't follow the link and see the other pics). (top and bottom are aluminium. No plastic)
 
No idea but it is a solid block of aluminium. The other side is grooved (in case you didn't follow the link and see the other pics). (top and bottom are aluminium. No plastic)
No no I figured it is a block of aluminum when you mentioned thermal paste.

I'd think aluminum is about $3 per kg?

Can make a lot of cases from 1 kilo?
 
No no I figured it is a block of aluminum when you mentioned thermal paste.

I'd think aluminum is about $3 per kg?

Can make a lot of cases from 1 kilo?
Waaaay outside my area of expertise or even anything I'm remotely knowledgeable about.
Edit: Just checked the link - it weighs 180g if that helps.
 
Waaaay outside my area of expertise or even anything I'm remotely knowledgeable about.
Edit: Just checked the link - it weighs 180g if that helps.
So with a block of aluminum and a CNC machine one can probably get 4 out of it, maybe more, interesting, I will talk to someone from the forum who knows his CNC stuff and revert back.
 
I use one of these. Haven't even gotten around to putting on thermal paste yet but no problems so far on a Pi4 4GB model. (I don't really stress it though).
BTW, re your original post - the Pi3 won't go out of production - Pi Foundation always keeps old Pi's in production for exactly this reason - industrial users.

(About 200 bucks from https://www.robotics.org.za/LT-4BA02?search=lt-4ba02)

View attachment 1146710
Yes, that looks very similar to the one Communica sells and at a very similar price point. I have placed an order for one Raspberry Pi 4B kit which will include this particular case. As soon as it arrives we will be putting it through it's paces and monitor the cooling temperature. Like i mentioned before, it looks similar to the Flirc case in design and that worked very well.
 
So with a block of aluminum and a CNC machine one can probably get 4 out of it, maybe more, interesting, I will talk to someone from the forum who knows his CNC stuff and revert back.
Just as a matter of interest, this is what the Flirc case looks like for the Pi4 that we tested originally. Doesn't even have the grooves as the other one have. The black covers are made of rubber if I remember correctly.
 
Just as a matter of interest, this is what the Flirc case looks like for the Pi4 that we tested originally. Doesn't even have the grooves as the other one have. The black covers are made of rubber if I remember correctly.

Keen to hear the results of your testing
 
What are they used for?
The Pi's are the brain of a IoT electro-mechanical device. The Pi runs the main program, drives a GUI on a 7" display, provides internet and controls various pumps, motors and sensors via a connected microcontroller.
 
The Pi's are the brain of a IoT electro-mechanical device. The Pi runs the main program, drives a GUI on a 7" display, provides internet and controls various pumps, motors and sensors via a connected microcontroller.

That's awesome.

I love IoT and I love ESP32s
 
Can I power a Pi 4 from the header pins? or is it not advisable?
I want to connect my Pi to my alarm battery. I have some 12V to 5V converters.
Would it be best if I connect to the header or solder a USB port/cable to the output end of the buck converter? But then I would still have the USB sticking out the side of the Pi
 
Can I power a Pi 4 from the header pins? or is it not advisable?
I want to connect my Pi to my alarm battery. I have some 12V to 5V converters.
Would it be best if I connect to the header or solder a USB port/cable to the output end of the buck converter? But then I would still have the USB sticking out the side of the Pi
Like this?

iu


iu
 
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