This post will cover the use of Node Red as a system monitoring tool. Why is this useful? It gives system status at a glance. With some advanced configuration, Node Red can provide trend analytics or automated responses. Here is a comparison of two methods to gather metrics from systems and present them in Node Red. The first method is with the SNMP node. This is centralized because Node Red is the single point that is gathering metrics from multiple…
This post will cover recent uses of the NRF24L01 with the EPS32-Cam module. An earlier example used an the NRF24L01 module attached to an Arduino Uno, a laptop, and a logged putty session, details can be found here, https://www.cloudacm.com/?p=3836. This configuration had limitations due to its size, the required pieces of equipment, and operating steps. The purpose of this scanner type is to survey 2.4Ghz radio transmissions. The NRF module can detect power levels across the band and store those…
In this post, we’ll explore how to incorporate the ESP32-Cam module into a spectroscopic setup. There are numerous online resources that demonstrate the construction of a basic homemade spectroscope designed for visual observation. The following video utilizes readily available materials. The primary focus of this post centers on assembling the hardware for our spectroscope. We’ll leverage code from previous projects for the ESP32-Cam module. In a prior article, we employed the spectroscope to analyze the intensity of an RGB LED….