Description:
Electronic circuit design.
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Theremin...
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My little daughter wants to 'do' some electronics with me during these christmas vacation. :-))) As all young kids she's got totally unrealistic ideas, but when I told her about the theremin, she got enthusiastic and I feel this might be the right project: she's learning piano and music, has an amazing ear... more »
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day shot to hell
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OK, I just got the first board from production this morning, for this spectroscopy controller thing. [link] It gets 12 volts in, which runs an LTM8023 switcher brick to make 3.3 volts. The 3.3 runs most of the logic on the board (including a Spartan 6 and a PLX PCIe bridge, both BGAs) and also drives four... more »
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OT: "black box"
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Need "Ultimate black box"; would someone please _Direct record_ those 3 magic tones that preceded the recording "the number you dialed is disconnected.." onto a microcassette for me? Ideally, i would prefer the 3 tones, about 2-3 seconds of silence and a repeat of the tones and end of recording.... more »
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Annual PSA test
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Had my annual PSA test yesterday. Possible bad news, but funny at the same time... PSA=2.8, OK, but a BIG jump from last year's 1.4 So more tests :-( The funny... My urologist, female oriental, physical rating as "babe"... "Drop your pants" OK, I'm used to that, dropped pants, leaned over. "No, Let's do the _FRONT_ first"... more »
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Ultrasonic burglar alarm & digital clock
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I have acquired what appears to be a digital clock with twin ultrasonic transducers facing towards the front. When I power it up, it is quiet, but as soon as I move in front of it, it initiates a loud clicking noise, almost as though by ticking like a clock it won't warn off intruders, but would warn the owner that there had been an intrusion. There is... more »
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