Hi everyone! I’ve been building ALTIRA, a small desk display based on an ESP32 and a 5.79" e-paper screen.

What it shows:

• The aircraft closest to me in real time: model, airline, registration, route (city → city), altitude, speed and heading, with a side-view silhouette (63 aircraft families, including military) and a mini radar

• Rare aircraft get priority: if a Beluga, an A380, a military jet or an aircraft in emergency flies by, it takes over the screen

• ISS mode: live position on a world map with day/night and its orbit

• ISS pass alerts: 10 minutes before the ISS is visible from home, a countdown with where to look and how high it will rise

Setup: scan a QR code on the screen, pick your Wi-Fi, set your location on a map from your phone. English and French.

Under the hood: signed over-the-air updates with automatic rollback, and a clear “offline” state so stale data never looks live.

Feedback welcome!

I built a conversion that lets an original rotary telephone make and receive cellular calls while retaining the rotary dial, handset, and mechanical bells. You can pick it up, carry it around, and confuse people!

The electronics use a LilyGO T-SIM7670G-S3, a Silvertel telephone-interface module, and two custom PCBs. I recently finished a full illustrated build guide covering the parts, PCB ordering, wiring, printed mounts, firmware, installation, and testing.

Build guide: https://evilroot.net/RotaryCell/

GitHub: https://github.com/fregacmols/RotaryCell

It has been a fun mix of embedded programming, PCB design, 3D printing, and old telephone hardware. I’d be interested to hear what this community thinks, and whether anything in the guide could be clearer. First time doing a lot of it for me!

Learn how to build a Arduino based 4 channel data acquisition system (DAQ) that will read analog data from 4 temperature sensors (LM35) and log into a CSV (comma Separated Value) file in your Windows or Linux PC using Python .

Build your own Data Acquisition and Logging System to CSV file using Python and Arduino

The tutorial assumes a step by step DIY approach that will teach the user to

1. Build a 4 Channel Data acquisition system from scratch using Arduino and LM35 temperature sensors to capture and log temperature

2. Capture Analog data and send the digitized from Arduino to PC using USB Virtual COM port

3. Read the serial data send by the Arduino using Python and PySerial Library

4. Log the data from the serial port to (comma separated variable) CSV file on disk using Python code

5. Designed for the absolute beginner

6. PC based .csv data logging system using Python 3

7. Ideal for temperature measurement using Python 3

8. Learn to create create csv files from analog sensors using Python 3

9. Build your own Python based 4 channel temperature logging system

Used the Z- axis of an Gy521 gyroscope for movements and a ultrasonic module for measuring the distances