tiefpunkt's log

And there it is, my first small hydroponics system. Four plants in a deep water culture.

I used an IKEA 22l Samla box as a container. Might have gotten away with a the smaller 11l version, but the pots were quite big. If I get my proper net cups, I might build a smaller system in a 11l container.

The light is a 40W CFL daylight bulb, in an IKEA lamp shade. Hacked the stand, and used an old UPS as a counterweight. It’s on a timer, and provides 12h of light a day.

It’s standing at Munich Maker Lab, because I couldn’t find a place for it at home.

Air for my deep water culture. Using a 30cm Airstone, on a 165 l/h air pump.

Ebay seller didn’t deliever the net pots for my hydroponics system in time, so I used the pots which the plants came in. Let’s hope this works.

Repotting plants for hydroponics. Lot of washing, and still didn’t get all the dirt out. Well, should be good enough.

Building a Monome clone using a Trellis board from adafruit. Works great, just don’t quite like the LEDs yet. Need to do some looking around for other LED options, or hacks to make the LEDs have a wider angle.


Moar light!

Did some work on my CNC mill on Saturday. Finally hooked up all motors to the controller board, and then made the machine draw some stuff.

Still need to add some cooling to the stepper drivers, clean up the cable work, add a case for the electronics, and so much more…

Awesome industrial lights and switches \o/

First shot a a DIY ClassD Amp. Circuit designed by Rouslan Dimitrov

After screwing up a bunch of things in the board design, I finally got it to work. Sounded pretty crappy, and the MOSFETs got somewhat hot. Well, at least one of them. Was to tired to check what was going on, but just glad I finally got this one built and in a somehow working condition.

Got my SmartCitizen Kit today. It’s basically an Arduino with Wifi and sensors for light, noise, temperature, humidity, CO and NO2. It was somewhat difficult to setup, but now it’s working and posting AirQuality data from my window ledge (currently only inside, as I don’t have a case for it yet). Check out my data over at smartcitizen.me

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