There are a couple.
Orca is a popular screen reader that works on the Raspberry Pi, and you can install it by typing from the terminal "sudo apt-get install gnome-orca". Here's that command pronunciated: "s u d o space a p t dash g e t space i n s t a l l space g n o m e dash o r c a"
yasr is another screen reader that works on the Raspberry Pi. ...
Follow the instruction:
1. Config the RPi as a Wifi Access point or a Wifi Hotspot
sudo apt-get -y install hostapd dnsmasq
Add the config below to the hostapd.conf file:
Some years later with modern operating system using systemd-networkd there is a setup available that is tested with Raspberry Pi. It uses only the built-in WiFi device and creates a virtual interface ap0 that is used for the access point. The physical interface wlan0 is used for the uplink client connection to the (internet) router so it works as WiFi ...
What you want to have is a classical failover scenario. Fortunately Linux has a professional solution for it with bonding. With it you can combine two (or more) interfaces where you can configure what should be the primary interface and switch over to the reserved interface if the primary fails and switch back if the primary is available again. This all is ...
You asked "can a Raspberry Pi broadcast multiple ssid through the adapter present in the stock hardware itself?". The SSID is a unique identifier for a WiFi network broadcasted by an access point. You cannot have multiple SSIDs for the same WiFi network. So I assume that you mean if you can have multiple WiFi networks (access points) from one Raspberry Pi. ...
Unsurprisingly, the bus supporting SD cards is called SD bus. There is a spec for it if you're interested. The SoC of RPi 3 implements two controllers for this bus: one is connected to the microSD slot, and the other one to the WiFi controller in SDIO mode.
The Linux driver for SD/MMC/SDIO devices is called mmc, and it does provide access to the hidden ...
On the Pi itself you can find the IP address with the ip addr or hostname -I commands or from the Network Manager GUI (probably).
The official documentation has some tips on how to find the IP address from elsewhere on the network but something like ping raspberrypi.local might be the easier one to try first, depending on the OS you're using on the other ...
That adapter's description says it supports Qualcomm's Quick Charge technology. The QC technology communicates with the device being charged and automatically selects 5, 9, or 12 volts, depending upon what the device can accept. My first thought is to return it and order a power supply rather than a charger. However, if it's connected to a "dumb" USB ...
If you've got access to your Pi, you can use this answer. If not, use the command line of your laptop/linux pc/mac. Some of this won't work in Windows unless you've installed cygwin or the bash shell for windows
Try this first:
$ arp -a | grep --ignore-case b8:27:eb
If you get a reply that looks like this, then there's your IP address!
Sometimes the display is out due to overheating of the pi device (happened to me many times when having very long-running hours). You shall let it cool down and try again.
Also, you shall power the pi device from the electric power source and not the PC because sometimes electric fluctuation of PC's power will cause damage to the device and/or USB port of ...
If there is any error while running this on startup, you can’t see the error message. To check this, press ctrl+alt+F1. Here you can check the output of background processes. You can return to graphical display by ctrl+alt+F7.
This is the way you can ensure whether there is any error while running the code or not.
Now come to your solution, if there is any ...
If you just want to prevent your Pi from going into sleep mode you could just change lightdm which manages sleep mode.
Go into the config file:
sudo nano /etc/lightdm/lightdm.conf
and add the following line:
xserver-command=X -s 0 dpms
I just noticed you're probably following a guide for the Raspberry Pi 4 where indeed that directory and file ...
Okay, after resetting the TV to factory settings, completely reinstalling Raspbian/cec-utils, and putting a new HDMI cable in the mix, the solution ended up being embarrassingly easy: unplugging and plugging back in the TV. I didn't do that before because the power was really hard to get to and I thought a factory reset would accomplish the same thing :/
One obvious reason is that raspi3 will load the kernel at the 0x80000 address, which is dedicated to the 64-bit kernel. If you load a 32-bit kernel at that address, it will fail to run because the absolute address values of all relative offsets will be wrong. The difference can be seen in "arm/raspi.c" file:
#define FIRMWARE_ADDR_2 0x8000 /* Pi 2 loads ...
Use a variable for the increment that can be switched from +1 to -1 depending on the position.
from sense_hat import SenseHat
s = SenseHat()
R = (255,0,0)
x = 0
y = 1
inc = 1
First = s.set_pixel(x,4,R)
Second = s.set_pixel(y,4,R)
x = x + inc
y = y + inc
if y == 7:
inc = -1
It is known that the Raspberry Pi 3B had problems that the Foundation tried to fix but could still make problems. You can try to use Special bootcode.bin-only boot mode or extend the time for which it waits for the mass storage device to initialize. Look at Raspberry Pi boot modes how to do it and for further information about troubleshooting.
If you do not have any reason to switch off the access point on the RasPi then you can just configure a client connection to your home network in addition to the access point. Then everything will work "automagically". If you at home the RasPi will connect by WiFi to your home network. If you are outdoors then there is just no connection. wpa_supplicant ...
It seems you are missing the critical part of converting RS232 signal (which is not 3.3 V) to RPI GPIO compatible 3.3V Signal as described in this example:
On GPIO header of RPi you can find a so called UART pins. In fact, it ...
Editing /etc/network/interfaces no longer works in Raspbian, as TSGames commented in the most upvoted answer.
Instead, you can use /sbin/iw wlan0 get power_save to read the current power save state, and sudo /sbin/iw wlan0 set power_save off to disable power state.
Since the iw command is not persistant, I added /sbin/iw wlan0 set power_save off to /etc/rc....