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 …

Oscilloscope as a Display

This project demonstrates how to use a digital oscilloscope as a crude display. 3D objects and a camera input are displayed using the internal Digital Analog to Converters. Parts The parts used here are the LOLIN32 and the ESP32 MiniKIT. But Any ESP32 board can be used.   The camera is the cheap OV7670 without the FIFO. The …

ESP32 I2S Camera (OV7670)

This project shows how to record images with the ESP32 and the OV7670 camera without FIFO. An SPI TFT display is supported and a basic web server provides the images in the local network. To get more details about the camera registers and timings please check out the project using the FIFO version and the …

How to Node-RED!

This is the project page to the How to Node-RED! video on YouTube. It shows how shows how to configure Node-RED on the Raspberry Pi and how to start creating home automation projects using MQTT and Node-RED. Some practical IoT examples are show. As starting point a Raspberry PI with a Rasbian Stretch image and …