buescher

94 ms·

1231.
by buescher 6y ago
Those are the industry requirements written by people with understanding of the hazards of running a garage door opener out of line-of-sight of the door. Read them carefully. There are reasons for each of them. Think hard about it. Remot
1232.
The New Radio Garage Door Opener (1933)(rfcafe.com)
2 points by buescher 6y ago|1 comments
1233.
by buescher 6y ago
The old Colman patents are cool too: https://patents.google.com/?q=garage&inventor=Howard+D+Colma... They're from the 1920s and go into more detail on the awesome morse-code-style cam-based mechanical decoding mech
1234.
by buescher 6y ago
Those projects can be made safe, but they generally don't mitigate the hazards that compliance with this section will: https://www.law.cornell.edu/cfr/text/16/1211.14 They are not the same thing as a hum
1235.
by buescher 6y ago
There is no invention here, and nothing to encourage. Electrically operated doors date from the 19th century, and we have over 100 years of understanding of their hazards.
1236.
by buescher 6y ago
You are correct. I intended to discourage the poster. Any "opportunity for improvement" could be misinterpreted as "just fix this one thing".
1237.
by buescher 6y ago
I'll happily be a buzzkill and say don't do that either (outside of your basement garage door opener laboratory) but it's not nearly as egregious.
1238.
by buescher 6y ago
I'm not going to point out the big things wrong with this project, because someone might think "oh, if I just fix those things I'm good". I will say I think it's the worst garage door opener project I've seen
1239.
by buescher 7y ago
Zeta takes some practice to make legible. Michael Covington's sheet on how to write Greek letters, while oriented towards linguists and language learners, is very clear and aesthetically appealing: http://www.covingtoninnov
1240.
by buescher 7y ago
Yeah. That and the LM393/LM339 type comparator-not exactly unknown though. But if I see those used appropriately in a circuit, it's the opposite effect of seeing 741 op-amps and 555 timers and TIP120 transistors. Another one - t
1241.
by buescher 7y ago
I am quite amused by MIT having to make some kind of apology for Jeffrey Epstein, but: the Rad Lab series, unless you count that as curiously good press.
1242.
by buescher 8y ago
In the last year: dBpoweramp for, finally, ripping my whole CD collection to lossless. Advantages over itunes: much faster, better feedback on read errors. VueScan for using my old scanner with modern Windows. Just worked. OrCAD because C
1243.
by buescher 8y ago
That's not where they went.