I had same problem, tried several different power supplies and about 8 different cords. nothing worked. I think the problem is the voltage drop in the usb connection. I purchased a thicker wired in supply and works great- no issues at all. Used for over an hour
The issue is now resolved. The issue was that I was connecting the node to two routers with the same IP address. Once I changed the IP address range of the router not connected to the internet, I could see that both RPIs were recognised by the router and the device could ping the node it was receiving the signal.
This is far from a perfect solution, but it works for me and I can now connect to WIFI while using a bluetooth keyboard - no dongle!
Set your WIFI/Hotspot to 5G mode on your modem/cellphone so that WIFI does not conflicting the 2.4G bluetooth connection on Raspberry PI
Create a new text file in home foler, put the codes in, replace XX:...
Two ways I can think of:
First way does not need the Pendrive but is a bit of a clat:
I would set the Pi up to be an access point using WiFi Connect from Balena.
Then when you power on the Pi you can use anything to connect to its access point and give it the locations WiFi details. Just before you leave, reset the Pi to use the WiFi connect at the next ...
If you are using the full resolution and a high frame rate, it is very likely that the processor and/or memory is getting exhausted (depending on what kind of processing you are doing). So, yes, lowering the camera resolution may solve the problem.
You do not say what programming language you are using. In python you can change the resolution like this:
Which system log(s) do I check to see what the problem might be?
It is difficult to answer the question without knowing what operating system you are using. But most modern distributions use systemd, also Raspbian since version Jessie. So you may find the journal. Just have a look at it with:
rpi ~$ journalctl --pager-end
Or more detailed
rpi ~$ ...
I just checked (after having not used that rpi since the last update above) and it's still up and seems to be functioning normally. The increased power supply seems to have cleared up the issues. The only piece of data that doesn't fit that explanation is that I had the one I/O error after switching to that PS, but after the one I haven't seen that error ...
If i understand you correctly,
you can click on the raspberry Icon in the upper left of your screen.
a menu should drop down, move your mouse cursor down to "Preferances".
a screen should open to the right of your mouse cursor and you need to
re-position the cursor into this secondary menu.
in this secondary menu, move your cursor down until "Recommended ...
You can host an Angular web app by apache package. You need to export the project then copy data on the default path of apache.
Install the apache:
sudo apt-get install apache2
Enable/Start the service:
sudo systemctl start apache2
sudo systemctl enable apache2
Now, you can check the default page of apache by opening 127.0.0.1 or the ...
Use BLE (Bluetooth Low Energy) it's easy to use through pip's pygatt library on the RPi.
First pip3 install pygatt
Example of reading from the RPi shown below:
adapter = pygatt.GATTToolBackend()
device = adapter.connect('C4:4F:33:16:58:37')
value = device.char_read(
Without connection details this is unanswerable.
If you are trying to use a single resistor in the common leg it is no wonder it is unreliable as each LED has a different voltage and only the lowest (usually Red) will work.
NOTE coloured LEDs often need >3V so won't work reliably on the Pi - you may need transistors.
PS running without a current limiting ...
Don't continually call the dutycycle function. You are probably resetting its function many times per second.
Try something like
if len(sys.argv) > 3:
# converteer de waarde 255 tot max 100 voor PWM.
roodwaarde = (int(sys.argv) * 100) / 255
groenwaarde = (int(sys.argv) * 100) / 255
blauwwaarde = (int(sys.argv) * ...
You have not clarified what you consider the end point of booting to be. If it is when a console login prompt appears, 50 seconds is quite high for a headless setup (which is what "buster lite" implies). If you are running a GUI, it might be more on par.
If not, something is wrong (or else USB boots are actually slower). You can systemd-analyze to drill ...
Try this before running your access point :
sudo kill -9 $(pidof hostapd dnsmasq dhclient wpa_supplicant)
or before your commands try only
echo $(pidof hostapd dnsmasq dhclient wpa_supplicant)
for showing any already running process able to interfere.
The echo command must return nothing if all is good for starting your AP