.:madworm:.'s photos
Testing the soft-uart receiver on an ATtiny24
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It seems to work. Now I only have to make the rest of the code live with it in peace. That doesn't work 100% right now. The LED driver interrupt gets upset sometimes.
The entry points of the pin-change ISR are marked with double-pulses, sampling the data is marked by single pulses. Spikes 2-9: sampling the data byte, spike 1: start bit, spike 10: stop bit, spike 11: hmmmm ?!?
OLS - UART sniffing
Openbench logic sniffer
OLS - UART sniffing
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OLS - UART decoding
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settings: 9600,8,N,1 de.wikipedia.org/wiki/RS-232
"start bit - 01000110 - stop bit" (LSB first!) equals 0x62
The purple-ish markings don't quite fit time-wise. I've put cursors at the byte boundaries.
Mr. Poop
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The only way to shoo him away is to either rapidly advance towards the window or by using a green laser pointer. It irritates him quite a lot to find a green spot near his feet.
Mr. Poop
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The only way to shoo him away is to either rapidly advance towards the window or by using a green laser pointer. It irritates him quite a lot to find a green spot near his feet.
CFL - a lamp of the past
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The silly-cone coating is supposed to keep shrapnels and mercury inside. Unfortunately is has become weak after several years.
CFL - closeup
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The silly-cone coating is supposed to keep shrapnels and mercury inside. Unfortunately is has become weak after several years.
CFL - ever wondered why many of them stink ?
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After having removed the defective silly-cone cover, a plastic dome was revealed. It was more opaque as expected. Taking a closer look shows that nasty stuff must have evaporated (these things get quite hot inside) and deposited on the inside. When using cover-less models, these chemicals are released into the air, free for everybody inside the room to inhale.
Blackbird activity
Essence of Chicken
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1 chicken
1 spoon of instant vegetable broth, salt, pepper
1 pressure cooker + 30 minutes of time
Lousy 'constant' current source
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Not really a constant current source. At least not really independent of supply voltage. With the addition of a Zener diode it could be improved a bit. A 2 transistor variant would be better. Or just buy an LM317 straight away.
Lousy 'constant' current source
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Not really a constant current source. At least not really independent of supply voltage. With the addition of a Zener diode it could be improved a bit. A 2 transistor variant would be better. Or just buy an LM317 straight away.
en.wikipedia.org/wiki/Current_source
What am I?
My VW got abused by a motor scooter
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The plastic bumper is scratched, which doesn't matter much. But the metal above and below it took some damage as well. That I don't like at all.
My VW got abused by a motor scooter
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The plastic bumper is scratched, which doesn't matter much. But the metal above and below it took some damage as well. That I don't like at all.
My VW got abused by a motor scooter
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The plastic bumper is scratched, which doesn't matter much. But the metal above and below it took some damage as well. That I don't like at all.
