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by martinrowan
Thu Jul 11, 2019 10:27 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

... If you case it up, I would suggest a fan is the best option for best performance, although you don't NEED to have one if will make things faster. I disagree, James, Sorry. If you case it up in the fully enclosed Pi 4 Case and intend to try and use the Pi like a Linux PC with its dual displays, ...
by martinrowan
Tue Jul 09, 2019 5:24 pm
Forum: Troubleshooting
Topic: ICACLIENT and libxerces-c3.1 on Pi4
Replies: 9
Views: 260

Re: ICACLIENT and libxerces-c3.1 on Pi4

Just to confirm you haven't got your Pi 4 in a case have you? Just checking you're not hitting the thermal issues as covered in great depth in another thread.
by martinrowan
Sat Jul 06, 2019 10:06 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

I spent some time today look at what Raspberry Pi 4 owners can do to keep the Pi 4 cool, especially if you want to use an enclosure.
https://www.martinrowan.co.uk/2019/07/c ... erry-pi-4/

Not sure if anyone cares or will find it useful. But thought I'd share.
by martinrowan
Sat Jul 06, 2019 4:04 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

https://i.paste.pics/6802d0ce202d9eae3036ce2b3e9cb412.png I installed a small heatsink just on the CPU, the temperature dropped dramatically, though only briefly as soon the heatsink rose to the same temperature as the CPU. This is a Pi 4 installed in a modified Pi 3 case with the topmost cover and...
by martinrowan
Fri Jul 05, 2019 5:37 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

More case and temperature updates. I bought another Pi 3 official case, and with the help of a Dremel I "adjusted it" to allow my Pi 4 to fit. Per https://www.raspberrypi.org/blog/raspberry-pi-4-on-sale-now-from-35/ https://www.raspberrypi.org/app/uploads/2019/06/4in3Case1-1-500x359.jpg With the ori...
by martinrowan
Tue Jul 02, 2019 5:52 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 58
Views: 6556

Re: Raspberry Pi 4 - new VLI firmware issues

Seeing your post earlier today with the new firmware. I decided to give it a try to see if my power usage dropped. As I was at work at the time I connected over my VPN to run an SSH session. I followed the instructions to install the updated firmware and rebooted. history 148 unzip vl805_update_0137...
by martinrowan
Tue Jul 02, 2019 6:34 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

The A72 use more power because they are twice as powerful. Simple as that. Not sure why people would think that would not be the case. James, sorry I don't think it's as clear cut as you make out. A Pi 4 idling consumes more power than a Pi 3, even when running at a lower frequency and even when bo...
by martinrowan
Mon Jul 01, 2019 7:58 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

Ok searching around I found some other sources: Raspi.tv Power measurements Core Electronics Pi3 vs Pi4 benchmarks Raspberrypi.org Benchmarks All these sites, including raspberrypi.org, show the significant power usage increase between Pi 3 and Pi 4. Indicating this is normal and expected. So really...
by martinrowan
Mon Jul 01, 2019 7:17 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

Might be some mileage in dropping the ARM idle frequency, in config.txt arm_freq_min=300 or arm_freq_min=150. If anyone want to see if that makes much of a difference might be worth a go. Tiny performance hit as the CPU ramps up when started to load, but in my testing in the open air, seemed to get...
by martinrowan
Mon Jul 01, 2019 5:40 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

Again, depends on definition of idle. Booted to console? Booted to desktop? Got any background task runnings? Using 4kp60? Not that I have specific figures, but could generate some. Per my blog post , my testing method was to boot both a Pi 3 and a Pi 4 to a Desktop, tested with and without 4k enab...
by martinrowan
Mon Jul 01, 2019 10:32 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

When idle and using onDemand cpu governor the Pi 4 was running at just 600MHz already.
by martinrowan
Mon Jul 01, 2019 8:04 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

Again, depends on definition of idle. Booted to console? Booted to desktop? Got any background task runnings? Using 4kp60? Not that I have specific figures, but could generate some. Per my blog post , my testing method was to boot both a Pi 3 and a Pi 4 to a Desktop, tested with and without 4k enab...
by martinrowan
Sun Jun 30, 2019 9:19 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

I've spent some time today investigating the differences between my Pi 3 and Pi 4 both when enclosed in their respective official cases. As this thread indicates the Pi 4 is a toasty board in comparison to it's previous incarnation. As the power draw has increased from 2.5W to 3.8W when idle, this >...
by martinrowan
Sun Jun 30, 2019 8:17 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

I agree at the moment it looks like the Pi4 will need some form of active cooling if it's going to be used in an enclosurre.

I honestly can't see how their Desktop Kit would work without throttling: https://thepihut.com/products/raspberry ... 4004440126
by martinrowan
Wed Jun 26, 2019 9:37 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

Wow Peter, so Pi3 B+ ~ 50°C, Pi4 ~ 63 °C in similar cases, heck of a jump. I have Pi3 Official Case and a USB-C power meter arriving tomorrow. So will look at temperatures and current draw between the two. If this sort of jump is the norm for the Pi4, the new fully enclosed official case for the Pi4...
by martinrowan
Tue Jun 25, 2019 9:38 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

The new case is fully enclosed, without the removable side panels. I can't seem to find my official Pi3 case to compare, have ordered one so I can pop my Pi3B+ in the previous generation case, run the latest Buster image and see what happens. Hopefully if it is just the case, it can be figured out b...
by martinrowan
Tue Jun 25, 2019 8:29 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 263
Views: 48203

Re: Raspberry Pi 4 temperature

I'm sure one day I'll regret being an early adopter, especially after the issues with the PoE HAT. Anyway, I bought the Pi4 Starter Kit from PiHut and set it up to take it for a spin, after a few mins I saw a temperature warning flashing on the right of my screen. Setup: Pi 4, Official Pi4 Case, Off...
by martinrowan
Mon Nov 26, 2018 2:44 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

Dos this mean: a. The issue is fixed? b. The new boards being distributed? If yes to (b), are they on amazon.co.uk at all? a. The issue is fixed as per: https://www.raspberrypi.org/blog/poe-hat-revision/ b. The new boards are in the channel, I can't say if Amazon sellers are selling the new or old ...
by martinrowan
Fri Nov 23, 2018 6:43 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

I'm not aware of this being exposed on the Pi, however it is likely available via the interface on your PoE switch.
by martinrowan
Thu Nov 15, 2018 11:26 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

raymate wrote:
Thu Nov 15, 2018 11:23 pm
... might hang onto the original one I also have it might be collectable one day ;)
Yep I’m keeping one of each as a momento of recent events. ;-)
by martinrowan
Thu Nov 15, 2018 11:19 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

Does it have an extra daughter-board/mezzanine board as per my image above and shown in my blog: https://www.martinrowan.co.uk/2018/11/r ... d-version/
by martinrowan
Sat Nov 10, 2018 3:43 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

I was fortunate to receive a prototype of the modified HAT to test. I've written up my analysis, test results etc. A minor correction to that report concerning the words "The inductor and resistor elements, in conjunction with the capacitors provide both high-pass and low-pass filtering ..". There ...
by martinrowan
Thu Nov 08, 2018 8:20 pm
Forum: HATs and other add-ons
Topic: PoE HAT - USB Ports not working - over-current (FIXED - New Hardware Release)
Replies: 327
Views: 83484

Re: PoE HAT - USB Ports not working - over-current

I was fortunate to receive a prototype of the modified HAT to test. I've written up my analysis, test results etc. So if you're interested in learning more and seeing how the HAT has been modified, take a trip over to: https://www.martinrowan.co.uk/2018/11/raspberry-pi-poe-hat-official-modified-vers...
by martinrowan
Sat Oct 27, 2018 8:42 am
Forum: HATs and other add-ons
Topic: PoE HAT Fan Hysteresis - Now implemented
Replies: 1
Views: 1188

PoE HAT Fan Hysteresis - Now implemented

Aside from the over current issues with the PoE HAT. One other annoying characteristic was that the fan would switch on and off as it went above or below the trigger temperature, without any form of hysteresis (despite what the original overlay specified which indicated it should have 5 DegC of hyst...

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