.:madworm:.'s photos
Confused trigger
MIBAM
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This trigger point looks right
Confused trigger
MIBAM waveform
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This should be a representation of the number 1110 = 14. The small spikes are caused by interrupt code running. The low periods should have lengths of 2N, 4N, 8N. I'll have to try this again with an external trigger. There is too much jitter to get a stable image.
MIBAM waveform
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As expected / feared, memory depth is always too low :-( Every DSO should have at least 1M per channel.
Not so clean edge
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The question: is the ringing real? In this case it was caused by sin(x)/x interpolation.
I was instantly suspicious as this effect only showed up at one zoom setting.
Clean edge
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Serial data at 9600bps
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With 104µs the average bit time is pretty much on spec. A nice thing when running with a ceramic resonator. I had to tune the bit-delays to get there. The ATtiny85 unfortunately doesn't have a hardware UART.
Serial data at 9600bps
Some signal
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More details
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Now with a voltage regulator
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No more chip frying... assuming I don't reverse the supply voltage ;-)
I had to sacrifice some of the axial symmetry. Oh well...
TSOP-ed my kitchen lights
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After replacing the 12V victim with another ATtiny85 and switching the IR sensor to the TSOP38238 (cheaper, better range and less directional), my kitchen lights are now under remote control. It only looks ugly from below. While doing things one does in a kitchen you hardly notice any of that.
ATtiny85 prototype
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ATtiny85 IR receiver
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He's dead Jim!
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Seems it was a wise decision to use a socket for this one.
Side note: now I know what I forgot. A voltage regulator. And connecting a 5V board to a 12V board will only create one thing: acrid smoke.
ATtiny85 IR receiver
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