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 In a recent quick-and-dirty project with a Wemos D1 mini clone I had some problems with the reliability of the code. The ESP8266 contains two watchdogs which have the sole purpose to reset the chip if the firmware ever should get stuck. Previously I experienced these watchdogs to be too aggressive, but this was […] Continue reading A tiny watchdog  I recently visited IKEA again and got interested in their affordable line of home automation/LED lighting products called TRÅDFRI (meaing wireless in a play-with-words kind of Swedish). Of course there was already an internet community active in hacking these devices and I joined in. Getting started I installed the gateway and after pairing devices […] Continue reading Hacking IKEA trådfri lighting automation  Exactly one month later – our electronics course at Uppsala University just approaches its end – and I got the next shipment for my new project: 1.1 km of equipment wire.  Watching Ben Eater’s youtube series on his breadboard computer based on discrete logic chips inspired me to pursue my own construction. Apart from a lack of time I also needed some more breadboards, which arrived today. twenty new […] Continue reading new project: a TTL/CMOS computer http://www.sciencetronics.com/greenphotons/wp-content/uploads/2018/02/20180226_balkong_malmabacke.mp4  Today I received a newsletter from the publisher Elektor. I am offered a special deal on a Peltier power generator which can power an LED light from a small candle. And this for an astonishing price of €99.95 instead of the normal price of €119.95. Great offer from Elektor. I’ll have to […] Continue reading Top deal of the week?  It’s been a while since I purchased some TFT modules on eBay. These modules come in different sizes and two varieties – with and without integrated touch controller XPT2046. The controller in the TFT display itself is an ILI9341 wired up to be controlled by SPI. 240×320 pixel TFT display with integrated […] Continue reading 240×320 TFT with touch on an ATmega328  Idea You know the problem – with every new gadget comes a new remote control, and while there are programmable and universal remote controls out there, they will never just do what you want. The three main remotes in my living room. For controlling my tv, my digital box and one of […] Continue reading Replacing three remotes |
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