Cleaned out and tested my mates tropical fish tank light. These are really nice. You can adjust blue / white proportions of lights.
Tag archives: blog
Friday, 18th September 2015 - 20:57:14
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on Sept. 18, 2015 .Friday, 21st August 2015 - 20:16:32
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on Aug. 21, 2015 .Sunday, 16th August 2015 - 16:01:21
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on Aug. 16, 2015 .I bought a few of these cheap ESP8266-12 modules from eBay. I'm pretty impressed so far with how easy it is to get a simple web server up and running.
Key learnings:
- The module has a number of IO pins which must have set state to run and another state to flash. GPIO0 needs to be tied low to flash.
- Needs hundreds of mA - can't run from USB->RS232 converter power.
- minicom (linux) doesn't send the required CRLF to the module. Have to manually use CTRL+M, CTRL+J
- Needs to be flashed with NodeMCU firmware to use LUA
python esptool.py --port /dev/ttyUSB0 write_flash 0x00000 ../Downloads/nodemcu_integer_0.9.6-dev_20150704.bin
Monday, 27th July 2015 - 07:53:09
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on July 27, 2015 .Sunday, 26th July 2015 - 19:13:13
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on July 26, 2015 .Saturday, 20th June 2015 - 15:36:16
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on June 20, 2015 .Saturday, 13th June 2015 - 13:39:20
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on June 13, 2015 .Saturday, 30th May 2015 - 14:11:24
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on May 30, 2015 .Sunday, 19th April 2015 - 19:49:17
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on April 19, 2015 .Thursday, 9th April 2015 - 13:59:25
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on April 9, 2015 .Friday, 3rd April 2015 - 17:55:47
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on April 3, 2015 .I started pulling apart this Ferguson PF181 transformer in preparation for use. It has old material based sheathing on the flyleads which I plan to replace with spagetti (PVC though). Unfortunately I didn't finish this off. I will have to continue later. It also looks like some kind of bug has made a house at some point in there.
Wednesday, 1st April 2015 - 18:53:41
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on April 1, 2015 .I fired up the filaments on the two 813 Beam Pentodes that I scored. They both work. One 813 is RCA, the other is Radiotron. I'm going to have to track down a microwave transformer to feed the plate on this thing. It wants ~2kV. Will have to rethink a project now, because the 304T is dead. I'm pretty sure people have built amps with 813s.
Tuesday, 31st March 2015 - 10:51:57
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on March 31, 2015 .Sunday, 22nd March 2015 - 18:51:38
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on March 22, 2015 .Spicey Baked Sausages (not my recipe). Normally you'd do this in the oven. I was a little bored of sausages. You cut the sausages down the middle once they are cooked a little and put in a BBQ / Tomato / Worcestershire / brown sugar sauce with onions in there too. They work a little better in the oven because the sauce caramelises. Still tasty though!
Saturday, 21st March 2015 - 10:26:29
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on March 21, 2015 .Sunday, 15th March 2015 - 17:42:23
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on March 15, 2015 .Today I had a little time to fire up the TRS-80 to see if it was alive or not. Turns out it's in great condition. I opened the main unit to check the capacitors and they are very close to spec still. To check the capacitors I desoldered the ground lead (so they were out of circuit) and checked them with the ESR meter. I bodged together a DIN->RCA lead for the video, then realised that my DIN connector was 7 pin not 5 pin. So I ended up further bodging by removing the pins from the plug and sticking them directly in the back of the TRS-80.
Monday, 2nd March 2015 - 07:48:18
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on March 2, 2015 .This is what the tank looks like now. Unfortunately the Guppies did not like their environment at all and carked it. The Tetras and Rainbow Shark are doing well. On Sunday we went out again, this time to another shop to get some more fish for the kids. We ended up with a Scissor Tail, More Tetras, An Albino Rainbow Shark and also two Coloured Widows - one blue and one pink. Kel also talked me into getting a bridge. Since the last lot of plants died, I got some more. I got some Ambulia and some Anubias. The Amazon sword is still there in the back, but it's not looking great.
Saturday, 28th February 2015 - 19:43:37
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on Feb. 28, 2015 .Saturday, 21st February 2015 - 13:46:34
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on Feb. 21, 2015 .The fishless cycle has now happened and the Nitrite and Amonia levels have bottomed out. This means that the bacteria has been established in the filter media which take care of the Nitrogen cycle for us and make sure our water doesn't get toxic. The kids got some guppies. Kel got a rainbow shark and I got myself some tetras.
Wednesday, 18th February 2015 - 21:56:28
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on Feb. 18, 2015 .