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3D portrait of Daniel Andrade Daniel Andrade smiling

I build useful software and the hardware behind it.

I'm Daniel, a software engineer and hardware hacker working across health data, travel tools, AI, DePIN, and robotics.

I co-founded Hotspotty and DePIN Hub, and I ship independent apps including DaysAbroad and VitalTrends. This is where I share the work and what I learn along the way.

Recent Posts

Arduino in HighDef Macro Pictures

Stunning macro lens photography turns Arduino Uno into desktop wallpaper art

High-resolution macro photography of Arduino Uno board. Download free desktop wallpapers in multiple resolutions - stunning close-up shots of electronics components.

DIY Home Ubuntu NAS Server

$200 fanless Mini-ITX build beats expensive commercial solutions

Build your own Ubuntu NAS server using Intel D510MO fanless Mini-ITX motherboard and Atom processor. Complete DIY guide with hardware selection, acrylic case build, and software configuration for home network storage.

Dotklok + LM35 Temperature Sensor

Adding thermal sensing magic to LED matrix clock with analog pin AD3

Modify your DotKlok LED matrix clock by adding LM35 temperature sensor. Complete Arduino code tutorial for displaying temperature on 24x16 LED matrix display.

Using Arduino to calculate Quadratic function

Turn your microcontroller into a mathematical equation solver

Learn how to program Arduino to solve quadratic equations using mathematical algorithms. Complete tutorial with code examples for creating a microcontroller-based equation calculator.

My HTPC 2.0

AMD E-350 Zacate APU brings efficient home theater computing

Building HTPC 2.0 with AMD E-350 Zacate APU for efficient home theater computing. Low-power Mini-ITX build with integrated graphics perfect for media center applications.

My DotKlok

Post-gym excitement meets purple PCB and Sure Electronics LED matrix magic

Build your own DotKlok LED matrix clock using Arduino and Sure Electronics 24x16 display. Complete DIY project with PCB, programming, and custom effects guide.