Category Archives: c-electronics

General Electronics Posts

Cheap Logic Analyzer Examined

While experimenting with my AS3935 lightning detector, I needed my Saleae logic analyzer to view the SPI protocol to make sure I was accessing the sensor correctly. I ended up at Saleae’s website to download new software, and, to make … Continue reading

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Calibrating the AS3935 Lightning Detector

I’ve been working on the free Pascal library to manage the AS3935 lightning detector. I’ll post an entry when it is ready to go. While in the process of working on that software, I have questioned whether the lightning detector … Continue reading

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Using an AS3935 Lightning Detector on Raspberry Pi with Free Pascal / Lazarus

This time last year I added an Air Quality monitor to my weather station. This year I decided to add a lightning detector after seeing the Hacker Space post An Introduction To Storm Detector Modules. I purchased this AS3935 Lightning … Continue reading

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VeeCad / Stripboard Revisited

I’m ready to make a permanent version of my DTMF detector. I’m only going to build 2, maybe 3, of these so it’s not worth it to me to design and manufacture a PCB for the project. Instead, I decided … Continue reading

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DTMF Detector / Decoder Circuit

Note1: The FCC frowns upon you connecting devices to the telephone system (the old copper line network a.k.a. POTS). In my testing, this device is connected to a small PBX. When I’m done it will be connected to a VoIP … Continue reading

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PMS5000 Air Quality Monitor Part 4 – Installing the Hardware (AKA WordPress BLOCK Mode F****** me)

I wrote a complete explanation of how I installed the PMS5000 and WordPress decided to discard it for me even though I was saving drafts every couple of paragraphs. A few months ago WordPress decided to drop support for their … Continue reading

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PMS5003 Air Quality Monitor Part 3 – Data Presentation

After getting a week or so worth of data it was time to decide how I wanted to view it. I knew I wanted to see the output on a web page. The software for this project is going to … Continue reading

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PMS5003 Air Quality Monitor Part 2 – Raspberry Pi and SQLite

After watching my little program monitor the PMS5003 air monitor properly for a few days, it was time to move on to the next steps: migrating the program to a Raspberry Pie and writing data to an SQLite database. Moving … Continue reading

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Reading PMS5003 Air Quality Sensors with Windows and Free Pascal

Some time in the past several months, the PMS5003 Air quality sensor came to my attention. This sensor allows you to monitor PM1.0, PM2.5, and PM10 particles in the air. Some times the air quality around these parts gets quite … Continue reading

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Installing Adafruit FT232H Breakout of the FT232H USB to Serial Converter

I recently purchased an air quality monitor I want to play with. It uses a TTL serial interface. While I could connect it directly to a Raspberry Pi (and eventually plan to do so), to start I want to have … Continue reading

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