Just go pick one up from your local store then
/s
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Im glad people like you are in the position you are in.
Itâs a stress⊠looking at things through a perfectionist lens obviously doesnât workâŠ. But itâs annoying to be told to send something that you arenât happy with⊠even if it ultimately isnât a problem for customers
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Not if have a hardware background. Unless itâs one of those super expensive ones from Vishay. But those are manufactured by nude virgins with gray beards, as Dave Jones often says⊠
That depends a lot of the fab, your design specifications, and the color of the solder mask. Green solder mask often provides the best resolution, hence itâs popularity. Yield trumps looks in most cases.
Donât get me started on all the things I hate about the ISO9001 BS⊠GrrrrrâŠ
Thatâs how my recent experience buying a pair of wireless earbuds went⊠Happy birthday to meâŠ
Shouldâve bought some DT implants insteadâŠ
Edit: Iâm probably an idiot and didnât realize that the the pad in the picture is probably supposed to be a full copper pad and not a jumper like pad with a manufacturing defect.
Now that Iâm not distracted by the dayâs grind, what in the actual filesystemcheck!? Thatâs one hell of a manufacturing defect that shouldnât have made it out of the fab! Especially if the board was fully tested and inspected.
Itâs pretty crazy⊠you can even see whatever physical process marred these pads continued on under the solder maskâŠ
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You started by mentioning normal and expected manufacturing imperfections, and then posted a picture of a literal eldritch horrorâŠ
Chances are that the raw flex PCB got heavily damaged in shipping, or while being cut to size, and some employee thought âI donât get paid enough to careâ and loaded it into the production line anywaysâŠ
Or maybe chinise culture makes people hide things as bringing up problems could make things worse for the employee?
Thatâs how many people think in Latin America BTW⊠But many companies have policies where employees donât get in trouble of they hand over the pieces of broken parts and equipment. Still, cultures are weird, and many people canât look beyond their own.
I donât know⊠the copper pad is actually laid down wrong too⊠way outside the target area and itâs stuck down⊠maybe this happened during enig ⊠who knows but yes definitely a horror to behold!
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Coooool
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The copper on double sided boards is laid down as full sheets that cover the entirety of the board. After several steps, a resist is applied and the extra copper is etched away.
Plating through hole adds a lot of complexity, but single sided boards can be easily etched at home. This is how I started prototyping back in the day, and I donât miss itâŠ
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I have yet to buy a Flipper⊠And my shopping list is becoming longer and more expensive by the minute! While I donât need that, itâs cool and I want one.
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Donât need to fit your robot body in a car if your robot body is a car.
Or have multiple bodies and one is a car and the smaller ones pack in the trunk.
Speaking of skateboards and wheels that go up stairs, I like the skateboard wheels in Snow Crash that are a bunch of little pistons that adjust to the distance of the ground so the board glides smoothly over any surface, even stairs.
Would be hard to manufacture such compact little actuators and precise sensors. Simpler is better. My concept little drone has only about three pistons per wheel and they extend out either side to make six ends on each - like spokes of a wheel (without the wheel itself, just pads on the end of each spoke) where the axle move off centre. I donât know if it would work, but with proper coordination it might be able to function like simplified little legs.
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My UniFi Doorbell G4 Pro just got an update enabling the fingerprint and NFC readers (that I didnât even know it had) and it is FREAKING AWESOME!!!
It reads my xM1 and xSIID very well without the need for a repeater. It can link to local user or UI accounts so that I can add my friends and family for access. Then, it can trigger a webhook when certain users are recognized, so it can run HomeAssistant automations depending on the person.
FREAKING AWSOME UPDATE.
Sadly, my smart lock connects via a âWi-Fi bridgeâ over Bluetooth and that bridge goes into a standby mode after a few seconds and takes somewhere around 10 seconds to reconnect, which makes unlocking very slow⊠
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Does a T5577âs range somehow depend on whatâs written to it?
My flipper can read my xMagic easily when itâs in EM mode, but when I write a Prox credential to it, I have to take the silicone case off and itâs still a little picky about placementâŠ
Am I going crazy?
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Yes
No
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Well, heres another interesting thing.
Try the same ones on a Proxmark
My prediction is
HID Prox will bow EM410X out of the water
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Itâs definitely a little better, but no where near as pronounced as the difference on the Flipper
I canât even imagine why theyâd be opposite thoughâŠ
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Wait what?
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This is an odd interaction that I also witnessed in reviewing the LF testing data.
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I believe has to do with the way the analog frontend configuration works, data encoding, etc. which impact the T5577 performance. For what itâs worth I think a legit original EM4102 vs an HID Prox chip with the same antenna size tuned for the required capacitance of each chip is basically on-par. I think this is a T5577 chip thing, which isnât so surprising if the chip is bending over backwards to change how its signalling works at the analog level.
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