Atech Postal – notes on the Fast Server

Atech’s Postal is an SMTP server and web management interface that’s geared towards transactional and bulk mailing (e.g. for application to user communication, and for marketing respectively). It’s quite well documented, but more importantly it’s open source (MIT license), and also seems well written – elegant, self-documenting code that’s easy to follow, useful comments, well
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Braun ThermoScan Fix – Low Battery Warning Switch Off

We have a Braun Thermoscan infra-red (IR) thermometer that has been working perfectly for about five years. It started complaining about low batteries and shutting off, despite me replacing with new batteries that I checked had plenty of charge. When I opened it, I discovered that the batteries connect to the circuit board via simple
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Raspberry Pi reading WH1081 weather sensors using an RFM01 and RFM12b

This article describes using an RFM01 or RFM12b FSK RF transceiver with a Raspberry Pi to receive sensor data from a Fine Offset WH1080 or WH1081 (specifically a Maplin N96GY) weather station’s RF transmitter. I originally used the RFM12b, simply because I had one to hand, but later found that the RFM01 appears to work
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Raspberry Pi GPFSEL, GPIO, and PADS Status Viewer

The gpfsel_list (I maybe should have called it lsgpio) utility displays a list of the currently configured function selections across all available GPIO pins and, for pins configured as GPIO, the current state of the pins. For pins configured with ALTn functions, the selected function is listed according to the datasheet information. It also shows
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