Hardware on Jose Castrillo

How to install /e/OS in Gigaset GS290 from GNU/Linux

Sun, 21 Mar 2021 00:00:00 +0000

I created this post as aim to collaborate with the project and help those how are bought a Gigaset GS290 to test this great /e/ OS degoogle fork, and have been failed by using easy installer, but first I will let clearly that these steps are the steps I followed in order to set up the /e/ OS in my Gigaset.

Requirement-system:

GNU/Linux OS (in my case Fedora).**
ADB & Fastboot library latest.**
/e/OS build**
boot.img**
recovery.img**
Basic knowledge in terminal & command line.
Sudo

Requirement-smartphone:

Setup monitoring system [Grafana+Prometheus] in RaspberryPi (Part1)

Wed, 03 Feb 2021 00:00:00 +0000

On this post I will explain how I set up a Grafana + Prometheus into a RaspberryPi with Raspbian.

Here it’s a little design where explains how it is the implementation I did:

🔵 Server: RaspberryPi 3B+

Services to install(server side):
1. Grafana
2. Prometheus (Metric collector and database)
3. Node Exporter (collector worker)

🟢 Clients: Raspberrypi Zero Fedora Workstation Debian VPS

Services to install(client side):
1. Node Exporter (collector worker).

🔵 Lets start from the server side.

Monitoring with Cockpit

Mon, 11 Jan 2021 00:00:00 +0000

On this post we are going to talk about cockpit how to monitoring and manage your GNU/Linux infrastructure. Based on the official description, Cockpit project is pretty easy to use, install and integrate, you can manage and add servers by ssh credentials to your dashboard, showing logs, monitoring containers(podman/docker), services running, disk usage, etc.

I’ve using it around 1 year, the only thing I cannot see it’s an alert tool or event trigger, maybe for the next release; is developed by RH team and open source, it’s already integrated in some of the GNU/Linux distribution ( RH, debian, ubuntu, fedora, etc).

Serial communication Arduino

Fri, 27 Nov 2020 00:00:00 +0000

From my last post (Arduino-oled-display) I added a new function that allows me to send notification/messages from my terminal (linux) to my Arduino and it shows it through the little Oled screen. Here I will share the commands and code lines to get done the serial communication on your project.

void loop() {
  while (Serial.available() > 0)
    {
        char recieved = Serial.read();
        inData += recieved;

        // Process message when new line character is received

        if (recieved == '\n')
        {
            Serial.print("Arduino Received: ");
            Serial.print(inData);
            //digitalWrite(ledPin, HIGH);
            //
            if(inData == "HELLO\n")

            { // DON'T forget to add "\n" at the end of the string.

              Serial.println("HELLO");
              //digitalWrite(ledPin, LOW);
              display.clearDisplay();
              display.setCursor(0,0);
              display.setTextSize(2);
              display.print("Hi jose!");
              display.display();
              delay(3000);
            }
            inData = ""; // Clear received buffer
        }
    }
}

OpenVPN usando Raspberry Pi3 + Noip

Wed, 15 Jul 2020 00:00:00 +0000

Requisitos:

RaspberryPi –> https://www.raspberrypi.org/downloads/raspberry-pi-os/
OpenVPN –> https://pivpn.io/
Cuenta abierta –> https://www.noip.com/
Una IP Estatica en tu Raspberry –> Router manual
Router con capacidad de tunel VPN —> IPsec, PPTP, L2TP.
Public IP —> https://www.whatismyip.net/

Pasos:

1. Crear DNS Record A en Noip

Apunta tu IP publica
Abre tu sesion con tus credenciales en Noip
Dentro del Dashboard ve al apartado “Dynamic DNS > Create Hostname” rellena:
- hostname, ejemplo: test
- Domain, ejemplo: ddns.net
- IPv4 address: Tu IP publica
- Click en Crear

Display OLED Arduino

Sun, 17 May 2020 00:00:00 +0000

On this post I’ll explaining how to setup a little OLED screen 128X64 on Arduino Leonardo

Tools:

Chit: Arduino Leonardo
Screen: Led OLED display 128x64 bought here
Workstation: Silverblue Fedora 33
Compiler: Arduino IDE

Over here you can see the connection diagram.

Steps:

Install the Arduino IDE from Flathub repo.
Now you have the flatpak Arduino app, below you will see older information related to a bug of the last Arduino Flatpak version, but now it fixed. Please continue with the 3th step.

~~2. Launch the Arduino IDE:~~

LineageOS 17.1 in Xiaomi A2 Lite (Daisy)

Fri, 03 Apr 2020 00:00:00 +0000

LineageOS17.1 in Xiaomi A2 Lite (Daisy)

The follow instructions are done by adb and twrp commands line.

OS used: Windows 10

Requirement:

adb fastboot tool
USB drivers
Xiaomi driver

Set into your android device:

USB debugging option enable.
Disable Encryption on the phone (DisableForceEncryption.zip)

Packages(download and leave the installation packages into your mobile SD):

LineageOS 17.1 for Xiaomi “Daisy”
TWRP
GApps

Press the dlower button + power button to boot in
Plug the mobile on your pc.
Open adb terminal tool (C:\Program Files (x86)\Minimal ADB and Fastboot\cmd-here.exe) and test it by: adb devices
Fastboot boot twrp.img –> in my case I use: twrp-daisy-3.3.1-0-offain.img it worked for my device :)
Make sure to create a backup (System, Data and Boot).
Then wipe the data partition, cache partition and the system partition (on this step you will lose all your data).

adb shell

twrp wipe data
twrp wipe cache
twrp wipe system

Install LineageOS17 image by TWRP commands and restart to TWRP mode again.

twrp install /external_sd/LineageOS17/lineage-17.1-20200413-UNOFFICIAL-daisy.zip
exit
adb reboot bootloader

Install Gapps (google play market)

adb shell
twrp install /external_sd/LineageOS17/BiTGApps-arm64-10.0.0-v0.6_signed.zip
exit

switch to slot if you are been in the A slot now switch boot onto B

fastboot getvar current-slot  --to know which slot you are
fastboot set_active b  -- If you were at A slot so switch to B
adb reboot

Below I left a couple of links were useful for me; I strong recommended to backup all your data before to start, as well as count with other phone in case you get in trouble with the installation.

Setup Grafana in Raspbian (Raspberrypi)

Tue, 09 Apr 2019 00:00:00 +0000

The below post is a simple explanation I did time ago, if you want further info and better explanation about how to setup a monitoring system into your Raspberripy please go to here.

Raspbian version:9.8

$ uname -r
4.14.98-v7+
$ uname -m
armv7l

Version installed on my RasPi: Grafana v6.0.2 (3f4c2e7)

Download Grafana package for your correct Raspi ARM
$sudo dpkg -i grafana_6.1.3_armhf.deb
$systemctl start grafana-server
$systemctl status grafana-server
then you will see from the status propmt the address=0.0.0.0:3000

msg="HTTP Server Listen" logger=http.server address=0.0.0.0:3000

To check the site is working go through localhost:3000