1419 Results for "rtl-sdr"

Demolition Man Verbal Morality Statute Monitor
Details from Demolition Man Verbal Morality Statute Monitor
This project is inspired by the movie Demolition Man and the future society it envisions. The movie is set in the 2030's when crime has been completely eradicated inside a tightly controlled society. Swearing is a violation of the 'verbal...

LoRa network module review
Log from Vinduino, a wine grower's water saving project
In this update, I cover experiences with 3 different modules, all using the same Semtech SX1276 LoRa chip, designed for use in the 915 MHz license-free band in the US and 868 MHz in Europe. The first generation of Vinduino remote sensor stations used...

A note about security and future plans
Log from A Home Automation System
A note about securityAlthough security was not at the forefront, as it is today, when I started designing the QualColor RF protocol in 2007 I made some small effort. I had read a comment online that said unless you were an expert in cryptography and...

Fun with Harmonics: VHF from a Serial Port
Log from Serial Port SDR
I measured the edge rates on the TTL output of some of these USB-UART bridges to be under 2ns. This generates some strong frequency harmonics, which you can see here in the 67th harmonic of a 1MHz square wave output by an FT232RL driven by the...

Modules
Log from DLT one - A Damn Linux Tablet!
I talked about this several times but only on the side lines and I think I have to give this topic a bit more depth as its actually THE selling point of the whole project. I also want to talk about it because I made it a more extensive topic of my overview...

Open Sky Anchor WiFi Drone Brings The GIG
Details from Open Sky Anchor WiFi Drone Brings The GIG
2020 Wildcard Mission Challenge We had a tornado , or rather several come through devastating the community in East Brainerd , Chattanooga, TN . The fiber optic lines are back up, but now that Covid-19 has taken such a strong hold on the local economy...

DIY Lakhovsky MWO (Milti Wave Oscollator)
Details from DIY Lakhovsky MWO (Milti Wave Oscollator)
Georges Lakhovsky (1869–1942) was a Russian scientist, philosopher, and inventor who lived in the early 20th century. He is best known for his work on the Multiple Wave Oscillator, a device he claimed could cure diseases such...

Reconstructing IBM's LVI (Low-Voltage Inversion Logic)
Log from Hackaday TTLers
The last project log IBM's LVI (Low-Voltage Inversion Logic) asked if, how and why this topology would work. (Above : NOR2 in LVI) I had no clue at first because no resistor value was hinted in the schematic. After some falstading, I think I got...

The Diode Clock
Details from The Diode Clock
The ClockThe clock is a six-digit HH:MM:SS timepiece using only DDL gates (1N4148/1N4007 diodes) for the logic and display functions (the LEDs are also diodes, of course). The power supplies and currently the crystal-oscillator timebase use more traditional...

Modularnixie
Details from Modularnixie
Problem Design an inexpensive circuit using easily available components to drive nixies. Modularity i.e. same circuit for each nixie desirable so that the number of digits can be flexible. Previous solutions Use the TTL 74141 IC or Soviet clones. This...

Vaaman
Details from Vaaman
Acceleration of Algorithms: Vaaman: Empowering Edge AI & ML InnovationsVaaman stands at the forefront of Edge AI and ML acceleration, providing a dynamic platform for groundbreaking applications. Vicharak is committed to delivering a project named 'Gati'...

ASIC #HackChat Transcript
Log from ASIC Design Hack Chat
Matt Martin Shall we get started? Does anyone currently here have any questions?kevin.harrelson Did you shave this year for St. Baldrick's?Shulie Tornel Questions for Matt can go here: https://docs.google.com/spreadsheets/d/13FvkrHwB7J1SAaQ_DPHPR4GszRTAtCUoA-5rf4jZPmw/edit#gid=0Shulie...

Hack Chat Transcript, Part 2
Log from SkyWater PDK Hack Chat
Tim Ansell12:44 PM@Troy Benjegerdes My general thinking is that if 130nm is successful I will be able to convince foundries to open source more advanced nodes where a Linux class processor is a *lot* more interesting. Mohamed Kassem12:44 PM"steve" what's...

WAASP: Wide-Area Aerial Search Platform
Details from WAASP: Wide-Area Aerial Search Platform
Overview Backcountry and side country exploration is becoming increasingly popular. In 2016, Yosemite National Park, for example, saw 25% more visitors than the previous record year, at 5M (1). Skiers have been flocking to Alpine Touring to get away...

FL2k Experiments
Details from FL2k Experiments
This project is going to happen in the build logs: I'm basically treating this as a blog for ongoing experiments with the FL2k dongles. This is a spin-off from #AM Band Voice Frequency Marker where I initially used this device to implement a project...

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