Yes, it is safe to leave any Raspberry Pi on 24/7, including the Pi Zero W. "Safe" in that case means no damage to the Pi. For the environment to be safe, e.g. not burning down your house, the Pi should be in an insulating case and the power supply should be of high quality. (I doubt you could really start a fire by short-circuiting the power supply, but ...
Here are some tips to help achieving a longer lifetime of your Pi:
Use a well suitable PSU (really recommending the Original Raspberry Pi Power supply here)
Place the Pi in a well ventilated area, a fan should not be necessary
Secure it sufficiently (e.g. turning off passwort authentication and using a SSH key instead) so that it is harder to hack
If the ...
I haven't heard before from an USB/WiFi dongle that emulates a wired connection eth0. Normally a wireless interface, used for a client uplink connection, cannot be added to a bridge. This is only possible with wired connections. For further information you may have a look at Raspberry Pi WiFi to Ethernet Bridge Anyway, with your nice dongle it seems to be ...
I’ve not tried this but I think this maybe what you need assuming you are using Stretch or Buster.
man SYSTEMD.LINK 5
Also at udev systemd.link
Example 2 shows:
This example assigns the fixed name "dmz0" to the interface with the MAC address 00:a0:de:63:7a:e6:
[Match] MACAddress=00:a0:de:63:7a:e6 [Link] Name=dmz0
I personally would make sure both ...
Results of a test with a Pi 3 A+, following instructions from here;
Second SD card via SDIO 1-bit
1) Second SD card appears as /dev/mmcblk1
2) Integrated WiFi interface does not appear in ifconfig
Second SD NOT enabled
1) Second SD card is ignored
2) Integrated WiFi interface appears in ifconfig, and is functional
No, you can't have both, they are ...
How have you set up the RNDIS network on the Mac?
You should find when the Pi is connected the System Prefs / Network page has a RNDIS device created. This is the Macs link to the Pi and determines both the Pi network address and its link to DNS.
This assumes your main network is 192.168.1.x and the DNS server is the Internet router at 192.168.1.1
You can achieve your goal by a RaspiCam version 2 and a Raspberry pi Zero. Take a look at this table:
More about this table
As you can see, it can reach up to 200fps on 640*480 resolution. Also, with the RaspiCam version 1, it reaches 90fps on the sale resolution.
Raspberry Pi Camera Module
This document describes the use of the four ...
A big big big big thank you to @Miliways for his question and his own answer.
None of the tutorials/answers worked for me on various forums before reading the above-linked question.
NOTE calling dhcp in /etc/network/interfaces will disable dhcpcd.
This struck my mind. I was using dhcp in my /etc/network/interfaces file. Then I changed it to
Create a new file called wpa_supplicant.conf on the boot directory containing the following text:
Do not use notepad if editing the file on a windows PC. Use something like Notepad++.
It is difficult to know what state your Pi is in; certainly the /etc/network/interfaces as listed will stop dhcpcd from running.
From your comments it appears you are using NOOBS
None of us do - it just makes subsequent updates and support harder.
I strongly recommend you follow Dougie's suggestion and do a fresh install.
You might like to use the new ...
Set up a simple REST-API with PHP for example that triggers local controlling code.
You may want to add some form of authentication tho like supplying a password in the request.
A request would be along the lines of:
As Dougie has commented the ports are joined together.
It is extremely inadvisable to connect the outputs of 2 switch mode power supplies together.
The results are unpredictable.
It is unlikely to damage the Pi and in the best case power will only be drawn from a single supply - the higher voltage causing the other to ramp down.
Normal USB gadgets are ...
Ubuntu refuses to mount the rootfs partition because it finds the partition is larger than the device by 1 block. Simply repairing the filesystem (with fsck or otherwise) is unlikely to fix that.
You should try to shrink the rootfs partition (try gparted for instance). Shrinking by 1 MB should be enough. Or, if you still can boot your Raspberry with it, you ...