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by rin67630
Fri Oct 18, 2019 7:57 am
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 15
Views: 507

Re: Disable USB-3 to improve the wifi range.

RPIgoodSBC wrote:
Thu Oct 17, 2019 10:19 pm
This way I don't need to remove my usb-3 memory (usb booting) from usb-3 port and put it on usb-2 port to avoid interferences
If you boot from USB3 you won't be able to carry on with USB2. You ought to use premium shielded cables and an metal enclosure for your disk.
by rin67630
Thu Oct 17, 2019 9:56 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 15
Views: 507

Re: Disable USB-3 to improve the wifi range.

RPIgoodSBC wrote:
Thu Oct 17, 2019 8:28 pm
Is it possible to disable USB-3 by leaving USB-2 active in the four usb ports
If you plug only USB2 peripherals, you will get only USB2 signals on the wires (the USB3 specific lines are not connected) and hence no 2,4GHz HF interference.
by rin67630
Tue Oct 15, 2019 10:03 am
Forum: General discussion
Topic: Raspberry Pi Solar-Powered: Great OnLine Tool
Replies: 8
Views: 318

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

davidcoton wrote:
Tue Oct 15, 2019 8:23 am
Leisure batteries (sold for caravans, for example) are a better buy for this purpose.
Are they not less common and hence more expensive at same capacity?
by rin67630
Tue Oct 15, 2019 6:57 am
Forum: General discussion
Topic: Rpi Zero is heat up. Is this normal and good for wearable?
Replies: 10
Views: 267

Re: Rpi Zero is heat up. Is this normal and good for wearable?

Can you measure the drawn current?
A sane Pi Zero without periphery should not draw more than 120mA.
...Which is by the way far too much for a wearable!
by rin67630
Tue Oct 15, 2019 5:33 am
Forum: General discussion
Topic: Raspberry Pi Solar-Powered: Great OnLine Tool
Replies: 8
Views: 318

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

... their Pi will not run 24/7/365 on a "15W" solar panel because it's the same as the official power supply spec. The example I gave was for a PiZeroW completely headless. For a Pi 4 with e.g. a touch display or keyboard/mouse and an hour display on daytime, consider a 1000W panel and a good 120A/...
by rin67630
Mon Oct 14, 2019 10:24 pm
Forum: General discussion
Topic: Rpi Zero is heat up. Is this normal and good for wearable?
Replies: 10
Views: 267

Re: Rpi Zero is heat up. Is this normal and good for wearable?

The Rpi Zero should not get warmer than 35°c without heavy load.
But i have seen defective systems that get really hot without load, whilst working apparently fine.
You should try another board.
by rin67630
Mon Oct 14, 2019 4:47 pm
Forum: General discussion
Topic: Raspberry Pi Solar-Powered: Great OnLine Tool
Replies: 8
Views: 318

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

clicky wrote:
Mon Oct 14, 2019 3:14 pm
I am curious to find out if it includes average raining days, too...
Yes. More than that. It bases on an extensive weather database. Several actually.
by rin67630
Mon Oct 14, 2019 1:58 pm
Forum: General discussion
Topic: Raspberry Pi Solar-Powered: Great OnLine Tool
Replies: 8
Views: 318

Raspberry Pi Solar-Powered: Great OnLine Tool

For all people who want to power an 24/24/365 Off-Grid Raspberry Pi with solar energy. You have got a great tool to dimension your system: https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html#SA For example my system in Germany: 1 Raspberry Pi Zero W / Arduino with some low power instrumentation: Con...
by rin67630
Thu Oct 10, 2019 9:19 pm
Forum: General discussion
Topic: Help me please,my due date is next week.....
Replies: 29
Views: 1153

Re: Help me please,my due date is next week.....

danjperron wrote:
Thu Oct 10, 2019 1:26 pm

1 - Check if the soil is wet
2 - if is wet then turn the pump for n seconds
3- Wait n seconds to let the water sink into the soil
4- goto to step 1
Hmmm.
Step 2 ist wrong: if it is NOT wet...

Step 2.5 is missing: turn the pump off.
by rin67630
Thu Oct 10, 2019 6:59 pm
Forum: General discussion
Topic: Which is better for power?
Replies: 26
Views: 1025

Re: Which is better for power?

If efficient you mean low idle current I agree. Very helpful in battery/solar installations. However at power levels PI runs at this model shows somewhat high losses in my tests. OK I use them with Pi Zeroes and with Arduinos and am using 7,4V batteries, so the conversion losses are minimal. With a...
by rin67630
Thu Oct 10, 2019 6:39 pm
Forum: General discussion
Topic: Raspberry Pi 3 B+ supply?
Replies: 8
Views: 254

Re: Raspberry Pi 3 B+ supply?

I have written to Pimoroni. They have a policy to deliver only the last model.
But they told me that even if they wanted, currently all production resources are 100% booked to produce the 4 and the Zero.
The 3b+ is currently in backorder but will be delivered again. When is unclear.
by rin67630
Wed Oct 09, 2019 8:44 am
Forum: Bare metal, Assembly language
Topic: Bare metal à la Arduino...
Replies: 7
Views: 436

Re: Bare metal à la Arduino...

pik33 wrote:
Wed Oct 09, 2019 7:34 am
The environment is called Ultibo
Thank you, i'll give a try.
but... no C++
I will have to re-learn Pascal like my very first times with the Sharp MZ700 with dual cassette drives in the Eighties...
;-)

Have we at least got a Pascal compiler to run the code on Raspbian for testing?
by rin67630
Tue Oct 08, 2019 9:45 pm
Forum: General discussion
Topic: Raspberry Pi in Grid Down situations
Replies: 8
Views: 313

Re: Raspberry Pi in Grid Down situations

I am at a disadvantage as I do not know Morse code, that is the ultimate weak signal communication. That WAS that is the ultimate weak signal communication. Today we have got LoRaWan https://www.semtech.com/lora/what-is-lora You get with chirp transmission techniques very long ranges using extremel...
by rin67630
Tue Oct 08, 2019 9:33 pm
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

ejolson wrote:
Tue Oct 08, 2019 6:05 pm
...one could also consider turning the computer off when it is not being used...
My Pis are used for environmental measurements. They are ideally on and online 24/24/365.
by rin67630
Tue Oct 08, 2019 4:40 pm
Forum: Bare metal, Assembly language
Topic: Bare metal à la Arduino...
Replies: 7
Views: 436

Bare metal à la Arduino...

I am used to program Arduinos and ESP32 systems. These controllers are very easy to program "bare metal". Have we got a similar IDE in the Raspberry Pi world? Probably not, isn't it? The other fantastic asset of Arduinos and ESP32 is the huge amount of libraries for almost every possible device. Lib...
by rin67630
Mon Oct 07, 2019 9:34 pm
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

Imperf3kt wrote:
Mon Oct 07, 2019 9:11 pm
If you really want to push the power down, get a Pi3A+ instead.
...unless you need more than one USB port.
A Pi3A+ plus an additional 4 port USB hub will need more juice than a Pi3B+
by rin67630
Mon Oct 07, 2019 8:21 pm
Forum: General discussion
Topic: Raspberry Pi in Grid Down situations
Replies: 8
Views: 313

Re: Raspberry Pi in Grid Down situations

How cool is it that you can run a Raspberry Pi from a usb power bank and get most of a days use from it? What is your Pi supposed to do in grid down situations? Continue measuring/controling something, or would you want to keep using it actively? For what?, with or without network? If with network,...
by rin67630
Mon Oct 07, 2019 7:02 pm
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

...Yeah this summer 3000 sq.ft was a little pricey to keep cool. ... i was looking at 13HP gas generators, I figure 13 hp should be enough to keep the whole house going with out a hitch in the event of a terrible winter storm. ... Your CO2 footprint seems really out of control, and you look to be p...
by rin67630
Mon Oct 07, 2019 6:11 pm
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

That's expensive electricity. Full ack! 0,28 ct each KWh. The price is the cheapest ecological electricity tariff available in Germany. I expect it to grow significantly in the next years, with the abandon of coal and nuclear generation. One often forgets that an insignificant ADSL router runnning ...
by rin67630
Mon Oct 07, 2019 4:56 pm
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

tului wrote:
Mon Oct 07, 2019 4:43 pm
What's a Pi 4? 20 watts maximum? That's $50-$100 a year in electricity. Peanuts for 24/7 usage of a device
So you do fully confirm my statement "A Raspberry Pi running 24/24 costs in a year more electricity than its hardware value."
And a Pi 3B+ costs definitively less than a 4B. Every year.
by rin67630
Mon Oct 07, 2019 11:23 am
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

Aren't they the same price as the Pi4B1? A Raspberry Pi running 24/24 costs* in a year more electricity than its hardware value. So if your Mum does not pay your electricity bill for you, the current consumption matters: the Pi4 just needs to much power for simpler tasks. Additionally i have many P...
by rin67630
Mon Oct 07, 2019 4:51 am
Forum: Deutsch
Topic: Rasberrpi von außen erreichbar machen über anderen Server per SSH
Replies: 3
Views: 357

Re: Rasberrpi von außen erreichbar machen über anderen Server per SSH

Ich würde gerne meinen Raspberry pi über das Internet von außen erreichbar machen. Die allereinfachste Methode ist über VNC. Offne ein kostenloser Nutzer Konto bei RealVNC.com Installiere VNC Viewer auf dem Remote System Aktiviere VNC in der PI Konfiguration, dann schalte "Licensing" im oberen rech...
by rin67630
Mon Oct 07, 2019 4:35 am
Forum: Deutsch
Topic: Raspberry Pi 3b+ kaufen...
Replies: 2
Views: 170

Re: Raspberry Pi 3b+ kaufen...

Danke!
by rin67630
Mon Oct 07, 2019 4:26 am
Forum: General discussion
Topic: How to INSTALL Linux onto a Raspberry 4?
Replies: 30
Views: 1499

Re: How to INSTALL Linux onto a Raspberry 4?

sunlan wrote:
Tue Sep 03, 2019 6:42 am
...via the normal install procedure?
Please define "normal".
by rin67630
Mon Oct 07, 2019 3:45 am
Forum: General discussion
Topic: Am I the only one that still would buy a Raspberry Pi 3b+?
Replies: 59
Views: 1901

Re: Am I the only one that still would buy a Raspberry Pi 3b+?

Obsolescence Statement Raspberry Pi 3 Model B+ will remain in production until at least January 2026 Pimoroni limit themselves to the top model of each model type A B etc. Zero, Zero W, 3A+, 4B. They have always done it that way... Ah OK, That's a deliberate politic of Pimoroni only. It sets my min...

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