Telegram messenger CLI for Raspberry Pi OS

Telegram Messenger App Review - YouTube

Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.

Telegram Messenger CLI for Raspberry Pi OS

This guide likely works for other linux distros besides Raspberry Pi OS. It’s a tricky little bugger to install but rewarding nonetheless.

https://pimylifeup.com/raspberry-pi-telegram-cli/

If you want to go the GUI route:

Telegram Desktop for Raspberry Pi

sudo apt install snapd
sudo snap install telegram-desktop
telegram-desktop

Message me!
t.me/thinkzinc

Install SDR (Software Defined Radio) Software GQRX on a Mac

RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software ...

So, you are interested in using an SDR module and SDR software on your Mac?
Homebrew is the easiest install method I have found. The other method involves MacPorts. I was successful using this method on one Mac. On the other… nope.

Version 2.6 of GQRX Released

GQRX is a great open-source program that will do the trick.

First you will need homebrew (if you don’t already have it). It’s a great source for open-source software!

xcode-select --install

The first command may not work in your system. If not, proceed to the second one.

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Verify the install worked.

brew doctor

Then you will need to run the homebrew command in a terminal.

brew cask install gqrx

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Install Spotify Connect on your Raspberry Pi with ‘raspotify” on Raspberry Pi OS

Setting up Spotify Connect on the Raspberry Pi

First update your Pi’s OS:

sudo apt update
sudo apt upgrade

Install ‘curl’ and ‘apt-transport-https’

sudo apt install -y apt-transport-https curl

Add the raspotify repository and the GPG key:

curl -sSL https://dtcooper.github.io/raspotify/key.asc | sudo apt-key add -v - 
echo 'deb https://dtcooper.github.io/raspotify raspotify main' | sudo tee /etc/apt/sources.list.d/raspotify.list

Install ‘raspotify’:

sudo apt update
sudo apt install raspotify

You should now be able to go into the Spotify app on your phone or tablet and select your pi from the device choices.

Tweaking:

You can change your Pi’s device name and the bit rate of the stream by editing the configuration file:

sudo nano /etc/default/raspotify

Look for the device name and bitrate strings and make any desired edits. Then save and restart the raspotify service:

DEVICE_NAME="raspotify"
BITRATE="160"
sudo systemctl daemon-reload
sudo systemctl restart raspotify

Troubleshooting:
raspotify – no sound even though phone is connected to Pi

Source for further investigation: https://github.com/dtcooper/raspotify/issues/31

Use aplay -l to see devices. Sample output:

pi@lab9:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
  Subdevices: 3/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3

card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3

card 2: sndrpihifiberry [snd_rpi_hifiberry_dacplusadc], device 0: HiFiBerry DAC+ADC HiFi multicodec-0 [HiFiBerry DAC+ADC HiFi multicodec-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Edit the raspotify configuration:

sudo nano /lib/systemd/system/raspotify.service

Find the “ExecStart” line and add the device.
In this case (example above), desired device is sndrpihifiberry.
Card is 2 and Device is 0. Use “–device hw:2,0” in configuration.

ExecStart=/usr/bin/librespot --name ${DEVICE_NAME} $BACKEND_ARGS --bitrate ${BITRATE} $CACHE_ARGS $VOLUME_ARGS $OPTIONS --device hw:2,0

Restart the service:

sudo systemctl daemon-reload
sudo systemctl restart raspotify