Author Archives: Dan TheMan

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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Accessing HP3000 with Telnet and puTTY

Telnet has never worked properly on my physical HP3000. I never needed it so I never fixed it. I decided to to track down the problem this evening. Fixing the telnet server was fairly easy – in 2001 someone altered … Continue reading

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Replacing HP3000 Series 928LX SCSI Hard Drive with SCSI2SD SD Card interface

My HP3000/928LX uses a Fast SCSI hard drive. Not only are these are no longer available new, they are getting hard to find and expensive used. Not that I start the HP3000 that often, but every time I do I … Continue reading

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Repairing a female Molex .156 Found on Pinball Games

I recently purchased the pinball game Funhouse, my all time favorite. The machine was refurbished and looks brand new inside and out. Shortly after receiving it I noticed that coin door functions were working erratically. Most importantly, the buttons used … Continue reading

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GnuCOBOL’s Report Writer Module

I am finally to my goal made at the beginning of this (lousy) year! Use embedded SQL to extract data from a database and the COBOL report writer to produce a printed report. Thus, this is the last planned post … Continue reading

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COBOL Sort Module in GnuCOBOL

In this post I’m going to modify the code I wrote in My Own Embedded SQL GnuCOBOL Program. These days, it is almost certainly more efficient to allow the SQL to do the sort for you. When I was writing … Continue reading

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COBOL and $2,020,202.02

Over the years, in fact even in the past year or two I would see on the News some person either getting a bill or a check for some ridiculous amount of money that would be in the form $2020202020… … Continue reading

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