Uncategorized

LED-Matrix Lamp

This tutorial shows the build of the mini lamp from the video in detail Needed components (affiliate links): 16×16 Flexible RGB LED Matrix ($13)ESP8266 D1 MiniPower Supply 5.5mm Barrel Jack 3D PrintThe blender and stl file can be found on thingiverse . The blender file is only needed if you like to modify it. The …

Cheap Ass DIY 3D Scanner

This mini project shows an attempt to built a cheap areal 3D scanner. The two attempts use an ultrasonic transducer and a time-of-flight sensor. The project ist Arduino based with the ESP8266 board extension. While it’s still work in progress this page will grow with additional information. Parts I put together some affiliate links. These …

ESP32 Color PAL

This project shows how to generate a color PAL composite signal using the built in DACs of the ESP32. You might want to check out the complete playlist on the development of an ESP32 based game console. https://www.youtube.com/playlist?list=PLjUbKCHhzPEzCm2_KFAICIN-7QTap_s72 Color encoding demo (Full size version here) <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” …

ESP32 Composite Audio

This project shows how to generate composite audio and video at different sampling rates and techniques using the built in DACs of the ESP32. You might want to check out the complete playlist on the development of an ESP32 based game console. https://www.youtube.com/playlist?list=PLjUbKCHhzPEzCm2_KFAICIN-7QTap_s72 Parts The part used here is a LOLIN32 board. But Any ESP32 board …

ESP32 Composite Video

Work principle The code generates an analog signal using the internal DAC according to the PAL and NTSC standards described here. Each image consists of two half frames (even and odd image lines). The blank level is at ~0.3V(values depend on PAL/NTSC). The synchronization is done using some pulses at 0.0V. The following image gives …