Welcome to the world of Raspberry Pi! Fortunately, the operating system on a Raspberry Pi is typically Linux based, and I assume this is the same for you. If I am understanding your question correctly, then you want to reinstall a browser onto your Raspberry Pi without having to reflash the whole OS. If so, just run:
sudo apt-get install chromium-browser
It looks like you got a board which has been through rework after production. The SD card slot was not properly soldered after reflow, so it was re-soldered manually, and manual soldering doesn't look as pretty as reflow (and has a higher failure rate).
The white stuff around the pads is the solder flux which whoever who did the repair didn't bother to clean....
so I backed up everything with dd to a 1TB hard drive.
That is the best action that you did. When you try anything, do it on a copy of this file, not on this file itself.
First make a copy of the image and work on that copy. If anything goes wrong, you will still have the original image.
The fact that you use fsck on the original image suggests that you ...
If you got one of the Raspberry Pi kits that come with the SD card with NOOBS (CanaKit is the most popular one), you can hold shift as the Pi is booting to be taken to the NOOBS install screen. At that point you can pick whatever version you want to install.
That being said, if you flashed the SD card yourself, you will have to go through the trouble of re-...
This has been a source of confusion for some time. About 4 months before you posted your question a "Raspberry Pi Engineer" claimed in this forum post that power consumption would be 3mA (15mW power) following a poweroff command. We're still waiting for this :)
To be fair, there has been some improvement in power consumption since that post, but as ...
This has NOTHING to do with the Pi.
This is a common issue with unearthed devices. TV and other audio/visual devices are common offenders.
The official Pi supplies (also virtually all plugpack supplies) are Double Insulated. This means they float WRT earth.
It is possible (probable) that there is some capacitative coupling from the mains to the (nominal) 5V/...
SSDs have wear levelling technology and quote their expected life usually having at least 60Tb of writes before failure. If my calculations are correct and using your 1Mb per minute estimate that should give you around 120 years before failure.
This sounds like a classic signal integrity problem.
If you have different cables, test those, perhaps you'll find one that your TV likes better than others. You may also consider buying a new one, especially if the ones you have are cheap, thin and no-name. As always, shorter cables work better than longer ones, especially if the cable is the root cause of ...
The camera takes some time to meter the exposure and determine the white balance. raspistill takes the option -t followed by some integer number of milliseconds as its "preview" time. If no value is specified, it defaults to 5000, or 5 seconds.
AFAIK the MXL7704 device on the Pi4 is managed by the Video Core and not accessible to the CPU.
It doesn't "measure" the voltage it uses an in-chip comparator.
The MXL7704 data sheet is readily available.
INT_SCL and INT_SDA are not shown as connected to the expansion header (as far as I can see).
Perhaps they are connected to one of the other I2C buses on the Pi4.
I suppose you could try writing drivers for those other buses.
its best that you use usb hubs.
unfortunately, that's the only choice i know and have...
it's something similar to this:-
You may want to check out this Instructable: https://www.instructables.com/Multiple-Raspberry-PI-3D-Scanner/
He initially connected 40 Pis together using Ethernet to perform body scanning.
In a update (Step 8) he increased the count up to 90 Pis tied together:
There was a May '21 revision to the documentation you referenced. I don't know what it said when you read it (in April '21??), but there is a boot parameter defined now: dvfs.
The document is a bit murky to my reading, but it indicates that setting dvfs=1 (in /boot/config.txt) is required to allow the core voltages to be reduced and thereby achieve the "...