Category Archives: Uncategorized

USB Real-Time Clock for Raspberry Pi, etc

Unlike a PC the Raspberry Pi does not come with any sort real time clock. Usually this is not a problem as it is connected to the Internet and a simple poll of one of the many clock sources will … Continue reading

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Uploading file data as a C Header

If you have a micro-controller and need to use some data from a file (say a static HTML web page or a bitmap) and you dont have a file system then you need to convert the file into a C … Continue reading

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Encryption for very low data rate embedded systems

If your latest IOT project needs to run on batteries for a few years and you need to send some important data over the airwaves or across a serial line then you are in a bit of a poor situation … Continue reading

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Lora Data Collection Terminal

Not really designed for manufacture, but the final version of this device is quite easy to assemble and doesn’t look too embarrassing for a low volume unit. Design files are here => EasyEDA The only change I may be making … Continue reading

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If the worst should happen!

Finally got around to having a proper holiday in the UK and here I am at the end of it with no tan, a few kg heavier and no actual support problems to report other than a few RTFM problems. … Continue reading

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Re-Envisioning Mobile Communications

What follows is an un-researched flight of fancy I’m totally over smartphones! I went back to a dumb phone 12 months ago and my old smartphone is now just used as the remote control for Netflix, Viber calls (see below) … Continue reading

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Why so quiet?

Well I have actually been busy. Two of the electronic boards have gone into production and a third more complicated 4-layer board is nearing completion for the client. Unfortunately these wont be open sourced as the client has some close … Continue reading

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PT100 Control Board for Raspberry Pi. Completed!

I have recently completed this project. It has the same specification as the previous post however a few improvements have been made in light of new information. The board is intended to accurately control the temperatures of 4 wine tanks … Continue reading

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Raspberry Pi PT100 temperature sensor and control board

I am currently working on a small Project for David at Wine Technologies (vinwizard.us) to replace an older proprietary temperature control PLC. David decided he would like to use a Raspberry Pi due to the fact it is very powerful, … Continue reading

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Ever get the feeling something big is about to happen?

I always seem to start blogs these days with how crazy busy I am, and while that is true, it is also boring and totally un-newsworthy. Instead lets talk the future, and, as anyone who knows me will tell you, … Continue reading

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