Category: AI
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MEMs Microphone Investigation
<p><strong>Technical / DIY</strong> — for those interested in do-it-yourself sound monitoring of hyperscale data centers and related circuitry</p> <p>I’ve been mulling over Preston Blackburn’s Remote Audio Monitor design (see <a href="https://salemdata.net/johnpress/?p=1223">Monitor Sounds From a Data Center?</a>) and assessing its ability to monitor infrasound (<20hz) and low frequencies between 20 Hz and 50 Hz. Blackburn uses…
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Build Your Own Artificial Intelligence Camera System
<p>I have added artificial intelligence (“AI”) to my home surveillance camera system.</p> <p>No cloud service.</p> <p>No fees.</p> <p>No meters.</p> <p>Everything stays on premises and is totally under my control.</p> <p>The system I have designed is quite simple:</p> <ul> <li>you need a Raspberry Pi 4B (<a href="https://www.adafruit.com/product/4296">Adafruit</a> \$120 – \$190) or better,</li> <li>a Google Coral USB…
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Reticulum Testing: Seeing the Invisible Transmissions
highly technical I’m testing microReticulum, a C++ implementation of Reticulum. I’ve specifically been testing the LINK and transport mechanism. I have three units: BOB, CY & DAN. While all three units are within broadcast range of one another, I have purposefully caused BOB and CY not to be able to receive each other’s transmissions. This…
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Reticulum on Rust: Comparison Of Two Projects
<p><strong><span style="color: #ff0000;">highly technical</span></strong></p> <p>There are two projects that came to my attention where the Reticulum implementation is built using the Rust programming language. I know very little Rust, but I have been impressed with everything so far. Scott Lamb of the <a href="https://github.com/scottlamb/moonfire-nvr">Moonfire NVR</a> project has been suggesting I learn Rust since 2018, and…
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Creating A Specification After the Fact Using AI
Introduction Protocol specifications are normally written before independent implementations are attempted. The specification is the common contract: it tells each implementer what must be sent, what must be accepted, what may be rejected, and what behavior is expected. Reticulum and LXMF present a different problem: much of the “protocol” must be inferred from a working…
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Hardware-in-the-Loop AI Debugging: Reticulum Bluetooth on the T-Beam Supreme Works
Highly Technical Harnessing AI to control USB-connected devices can dramatically shorten hardware debugging cycles. I have successfully integrated the ble-reticulum C++ (protocol created by Torlando) interface into the microReticulum code. I built a binary image for the ESP32-based LilyGo! T-Beam SUPREME which I loaded into two T-Beams. The two T-Beams then negotiate a Bluetooth “pairing”…
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From Python Prototype to C++ Protocol Core: A BLE Reticulum Milestone
<h3><strong>highly technical</strong></h3> <p><strong>The goal is simple to state and hard to implement: move the Reticulum node closer to the radio hardware, so the T-Beam is no longer merely a modem for a phone, but a Reticulum participant in its own right.</strong></p> <p>GitHub user <a href="https://github.com/torlando-tech">torlando-tech</a> designed a Bluetooth protocol for <a href="https://reticulum.network/">Reticulum</a>. Bluetooth is not…
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Calculating a NW Segment of Salem’s Class D Air Space
<p class="wp-block-paragraph">I’m still working on the matter of the low flying Learjet over Salem, and in that matter, I have determined the jet first flew parallel to the FAA’s Class D airspace as much as it could before entering it.</p> <p class="wp-block-paragraph">So then I wondered, why and what distance is involved. So here is a…
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