Raspberry Pi Forums

rin67630

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.

rin67630

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.

rin67630

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?

rin67630

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!

rin67630

... 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/...

rin67630

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.

rin67630

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.

rin67630

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...

rin67630

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.

rin67630

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...

rin67630

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.

rin67630

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?

rin67630

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...

rin67630

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.

rin67630

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...

rin67630

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+

rin67630

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,...

rin67630

...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...

rin67630

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 ...

rin67630

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.

rin67630

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...

rin67630

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...

rin67630

Danke!

rin67630

sunlan wrote: ↑
Tue Sep 03, 2019 6:42 am
...via the normal install procedure?

Please define "normal".

rin67630

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...

Search found 540 matches

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

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

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

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

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

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

Re: Raspberry Pi Solar-Powered: Great OnLine Tool

Raspberry Pi Solar-Powered: Great OnLine Tool

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

Re: Which is better for power?

Re: Raspberry Pi 3 B+ supply?

Re: Bare metal à la Arduino...

Re: Raspberry Pi in Grid Down situations

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

Bare metal à la Arduino...

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

Re: Raspberry Pi in Grid Down situations

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

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

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

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

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

Re: Raspberry Pi 3b+ kaufen...

Re: How to INSTALL Linux onto a Raspberry 4?

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