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Electronics For All (EFA)

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About EFA Community: For People around the world, who are interested in Embedded SW/HW, Electronics, Industrial Automation, Robotics, OSH, OSS, Beacons, 3D Fab,Professional N/W'ing, knowledge sharing & discussions on these technologies & engineering.34 Servers

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28 Jun 2021
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14 Jul 2021
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@cam.ellis:matrix.orgcam.ellis
In reply to @danielp3344:matrix.org
Someone from a former job emailed me and asked me if I wanted these, I think they're servo drives.
diy cnc? if they allow micro stepping you could drive some pretty beefy cnc servos pretty precisely.
13:44:29
15 Jul 2021
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18 Jul 2021
@danielp3344:matrix.orgDaniel PetersonSomething really weird just happened01:58:43
@danielp3344:matrix.orgDaniel PetersonI was soldering some stuff in my truck and all of a sudden I heard a weird noise01:58:59
@danielp3344:matrix.orgDaniel Petersoneventually I realized that every time I touched my solder to the iron I could hear what sounded kind of like mains hum...01:59:26
@danielp3344:matrix.orgDaniel Petersonanyone ever notice something like that? lol01:59:38
24 Jul 2021
@protocall7:matrix.orgprotocall7 joined the room.02:02:45
@protocall7:matrix.orgprotocall7hi all02:03:11
@protocall7:matrix.orgprotocall7
In reply to @danielp3344:matrix.org
eventually I realized that every time I touched my solder to the iron I could hear what sounded kind of like mains hum...
Is your soldering iron grounded?
02:03:37
@protocall7:matrix.orgprotocall7on a different note, I am working on a project this evening where I need a single NOT gate. I'm using 74LS logic for everything. Designing a PCB with a whole 74LS04 on it for one gate seems really wasteful. Anyone know if there's any downsides to using a BJT inverter with a 2N3904 or 2N2222 instead?02:06:00
@protocall7:matrix.orgprotocall7I need to drive the chip enable pins on 2 74LS241s and a 74LS245 with it, current requirements should be quite low02:07:43

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