This is the "Fairy Jar" night light that I created for my Daughter's birthday. I used some nichrome wire to make a hot wire cutter which allows styrofoam to be easily cut leaving a smooth(ish) edge. On top of that went some artificial grass. The foam and grass was banded with some unicorn ribbon to make it look neat and hide the edges. The mushrooms and lillypads came from an eBay China night light (that you'd never in your right mind actually plug into mains!). There are also some strings of copper wire with LEDs on them. The fairy and the mushrooms came from eBay. I drilled some 1mm holes in the bottoms of those (they are resin) - Into there I epoxied some pins with the heads cut off. This secures them into the grass/foam. It's all electrically joined up under the foam in the middle. There is a hole which goes through the base and pops up in the middle for the cord. More pics in the gallery.
Saturday, 20th January 2018 - 20:54:34
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on Jan. 20, 2018 .Monday, 15th January 2018 - 20:37:46
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on Jan. 15, 2018 .Today I built a prototype relay controller which can be controlled via MQTT, but also has built in temperature and humidity sensors. It uses the temperature data to act as a thermostat turning one of the relays on and off at a temperature set point with a few degrees hysteresis (so that it doesn't go nuts switching on and off if it's fluctuating over the set point). Hysteresis "time" can also be added so that I can use the same code for another controller which will control a fridge. You don't want to be turning the compressor on and off rapidly. To get the temperature, the values from two ds18b20s and a dht22 (not pictured) are averaged.
Friday, 12th January 2018 - 11:27:34
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on Jan. 12, 2018 .Thursday, 28th December 2017 - 19:27:51
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on Dec. 28, 2017 .Today I built up three Sonoff boxes which will be used for controlling various mains things. The two smaller black boxes used cheap extension leads. The larger box with two sockets uses an old IEC lead. They work well and are easy to use with the phone app, however, I will be eventually replacing the firmware on these so that they don't have to connect to AWS every time I want to toggle their state. Something with a local server and state tracking would be much more responsive and reliable.
Sunday, 24th December 2017 - 07:52:03
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on Dec. 24, 2017 .Saturday, 9th December 2017 - 14:20:15
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on Dec. 9, 2017 .Sunday, 19th November 2017 - 22:33:44
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on Nov. 19, 2017 .Wednesday, 1st November 2017 - 23:24:53
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on Nov. 1, 2017 .Thursday, 5th October 2017 - 16:23:58
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on Oct. 5, 2017 .Saturday, 9th September 2017 - 17:15:38
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on Sept. 9, 2017 .Sunday, 3rd September 2017 - 13:42:11
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on Sept. 3, 2017 .Sunday, 27th August 2017 - 12:28:10
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on Aug. 27, 2017 .Monday, 14th August 2017 - 11:47:30
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on Aug. 14, 2017 .Today and yesterday I finished the joinery on the bench. It's only a simple tennon arrangement using 40mm x 40mm pine for legs and 70 x 19mm pine for the skirt. It came out really nice, but the glue-up was a bit of a pain to manage. I also completed the table top and trimming the edge trim flush with the table top. There are more photos in the gallery.
Sunday, 6th August 2017 - 16:00:04
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on Aug. 6, 2017 .Saturday, 5th August 2017 - 17:34:15
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on Aug. 5, 2017 .Friday, 28th July 2017 - 19:48:15
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on July 28, 2017 .Thursday, 6th July 2017 - 15:59:18
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on July 6, 2017 .Today some cheapo eBay adapters arrived which were advertised as headset splitters, ie one socket for mic and one socket for earphones. These were not them. They were simply two way splitters. They were cheap enough not to complain about so I hacked the plug off and got to work. PS4 controllers use the CTIA standard of plug. So the tip is left, the first ring is right, the second ring is ground and the sleeve is mic. There are some other images if you click the thumbnail to see the gallery.
Saturday, 24th June 2017 - 13:57:40
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on June 24, 2017 .Monday, 19th June 2017 - 10:46:32
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on June 19, 2017 .Wednesday, 14th June 2017 - 22:50:04
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on June 14, 2017 .