Raspberry Pi Forums

bensimmo

My thanks to all for responses - most appreciated! I particularly like the WattYear approximation which is excellent for getting a ballpark. It's evident that my initial mains draw assumption was wide of the mark. The conclusion looks to be that, for sensible (?) quantities, the annual running cost...

bensimmo

Move to a different gpio, for example gpio17 (physical pin11 ) https://pinout.xyz/ This is not a fix, just a solution. Is it a Pi4 ? Yes, it is a Pi4 Do i need that 1-wire? Why can't i just let it disabled? No need to use 1-wire at all, I was just suggestin try a different pin to see if ti works :-)

bensimmo

If you only have the default line with no pin assignment, then it is using GPIO4 (physical pin 7). it will not see DS18's on any other pin. Can you take a picture of you setup/ EDIT just a thought, is this a typo in you first post ? " -yellow wire to pin gpio 27 " Is that a non-UK keyboard ? so # is...

bensimmo

Move to a different gpio, for example gpio17 (physical pin11 ) https://pinout.xyz/
This is not a fix, just a solution.

Is it a Pi4 ?

bensimmo

just for the info, you don't need to do the mod-probe stuff. that's enbled when you enable 1-wire which Pi are you using? - you are using gpio27 (physical pin13) if so type sudo dtoverlay w1-gpio gpiopin=27 pullup=0 does it work now? edit and check config.txt e.g. sudo nano /boot/config.txt and chan...

bensimmo

is was talking about the original poster...
disable both the Getty (settings should have done this when disabling console) and then also hciuart if disabling BT
if you are running as Pi then there is no need to mess with permissions?

bensimmo

Why are you starting serial-getty?

You didn't mention that you had disable hciuart, since you've disabled BT.
sudo systemctl disable hciuart

bensimmo

I have this here for when I started looking in to build one for a school.

https://publiclab.org/wiki/raspberry-pi-spectrometer

It should get you started and give you loads of link.
That uses the camera, but just out whatever you want at the end and see how it works.

bensimmo

All up to date then, so rules out any bugs in the original firmware. Not sure what to say, mine just works, nothing special with my setup, no traffic until I SSH in to it. Hopefully someone will be along with a way to log what happens when. Does it always loose connection at the same time (say a DHC...

bensimmo

just to check you are up to date with firmware
what does
sudo rpi-eeprom-update
give ?

bensimmo

They don't have a 'sleep' mode.

WiFi? Ethernet(cable)
Router problem? Does it still see it, can it 'ping' it?

bensimmo

Twistplot wrote: ↑
Thu Apr 09, 2020 12:29 pm
Sorry Heater I tried to attach the photo directly. Unfortunately, there was always an error report, when I tried, that the file was to big.
Thanks for the photo Bensimmo.

you were 257kB and it needed to be 250kB or less

bensimmo

Heater wrote: ↑
Thu Apr 09, 2020 12:13 pm
Would it be so hard to attach the photo(s) here directly as inline images? I for one am not about to start messing around with zip files for this.

: IMG_0691 (Medium).jpeg (246.26 KiB) Viewed 2212 times

bensimmo

The Pi only takes the current it needs.
The Pi *should* limit the max current if you try to draw more than the board can handle.

bensimmo

5V 18A red wire.
Top line.
More than the Pi should ever need.
Get a good connection and, job done.

bensimmo

Yeah, that happens. The pads are not really designed for it.

You'll need to try tap it from somewhere else, ether as it enters the connector or pull apart the connector or buy the 3.5mm connector plug and use that.

bensimmo

You'll need to find a 64bit OS for Rosetta@Home, Ubuntu should work I believe. It's for ARM64 (aarch64), you'll need plenty or RAM too, not sure if it'll work well on 1GB models. Yes it does work when the have the work units EDIT you can always catch them on twitter https://twitter.com/RosettaAtHome...

bensimmo

Plus one to Heater. Why thank you for that. Oddly enough, having been a staunch Linux only user since 1998 or so I have been happily using Win 10 for a couple of years now. Why? Because MS introduced the WSL. Finally they made an OS that I can do actual work on easily. Not only that but pretty much...

bensimmo

.. It's just a failing of the GUI chosen. No, it's a security measure. Other users (like root) can't access one's session by default (for example pi's). In order to do that, you'd have to explicitly add permission by running "xhost" first, or share an MIT-cookie (which is not a simple thing to do, ...

bensimmo

On thing not mentioned, it's easier to edit things as root using the command line. Is that not because there is no right click 'run as root' in the GUI. If there was, then the GUI would be easy and you wouldn't need to launch the text editors in the terminal. It's just a failing of the GUI chosen.

bensimmo

That voltage really needs to be reading ~5V, the official power supply read 5.1Vat the board.

You either need a better power supply or if it's uses a usb cable, then maybe a better USB cable.

4.6V will trigger the undervoltage.

bensimmo

I reported your post to try and flag the attention of an Engineer. They may know or ask you to try other thing to look at.
As I don't know

bensimmo

Serial is UART, check it's enabled, that's the PMSx003. It may need 30 seconds or so to warm up before it gives reading (I don't know them to well, I do know the SDS011s though).
So give it a good kick across the room this time.

bensimmo

sudo apt install i2c-tools then i2cdetect -y 1 should give you a nice grid and hopefully some numbers in a grid. That will tell you if the i2c device is being detected. 49 , 76 and 23 should be the numbers (from https://pinout.xyz/pinout/enviro_plus) It is actually line 27 that kicks it all off, th...

bensimmo

What's the smart bulb ? Are you using Tasmota or similar firmware on it ?

If you can see it on your laptop, grab the IP of the device and then go to the pi and 'ping' that device from it.

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