Posts by deshipu@mastodon.technology
(DIR) Post #AOAQ8s9qNjBbMcnL3Q by deshipu@mastodon.technology
2022-10-02T19:52:31Z
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@piggo That is a very dusty lid, when did you look under it last time?
(DIR) Post #AOCPU6iPjzOqxNRjP6 by deshipu@mastodon.technology
2022-10-02T14:25:33Z
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@rysiek An indicator, such as a gesture or colored light, that serves as a means of communication.
(DIR) Post #AOIhXZF0QosdhcQsgC by deshipu@mastodon.technology
2022-10-06T10:56:28Z
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So there is this ages old idea in the fantasy literature, that gods somehow need to be worshiped to gain strength, that they feed on human attention. And then we have several tech companies basically building attention-harvesting engines under the guise of selling ads. I bet this fits together somehow, but I can't quite see how yet.
(DIR) Post #AOMlZyUvLg62O1Nfto by deshipu@mastodon.technology
2022-10-08T18:28:17Z
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How come liquid crystal displays, especially for things like computer terminals, didn't dominate the market? Cathode ray tubes are such an awkward technology, requiring high voltages, fragile parts and a lot of space. Liquid crystal displays and neon lamp displays already existed at the time, but everyone went for the CRT's, until laptops set new requirements. Anybody knows why?
(DIR) Post #AOMlwRjHLaH7PvoJAe by deshipu@mastodon.technology
2022-10-08T18:53:57Z
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@tek Yes, but that is mostly because the CRTs had already 50 years of intense development and widespread use, while LCDs were super niche. But both technologies were there at the beginning, and if the world went with LCDs, it would be CRTs that were underdeveloped at the time.
(DIR) Post #AOMmRhWWfrbFNakUM4 by deshipu@mastodon.technology
2022-10-08T18:59:36Z
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@tek People have literally made LCD and OLED displays at home, in their garages. Haven't heard about anything like that with CRTs.
(DIR) Post #AOMmu1D54fQiXn9kq8 by deshipu@mastodon.technology
2022-10-08T19:04:43Z
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@tek The tools were there, all that was missing was people trying all kinds of things and seeing which one works better, and for that you just need there to be a need. Developing a good quality fast luminofor didn't happen overnight either.
(DIR) Post #AOMplUv9XZTPwlOodM by deshipu@mastodon.technology
2022-10-08T19:33:45Z
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If you were working on designing a new computer in a post-apocalyptic setting, without mass production and industry base, what would you consider for the output device?I'm thinking a daisy-wheel printer would be probably the easiest to make, and paper production is not that hard, but maybe even printing on clay tablets or something similar that can be reused?
(DIR) Post #AOMvwGcbdzmEVdF6YK by deshipu@mastodon.technology
2022-10-08T18:38:24Z
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@brion IIRC early CRTs had horrible ghosting as well, and flickering on top of that...
(DIR) Post #AOUI3dnsGJrQNQ1ddw by deshipu@mastodon.technology
2022-10-12T09:56:49Z
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@abcdw I'm being told that this is the sign of getting old.
(DIR) Post #AOVJTMvVvV3cfxOHOS by deshipu@mastodon.technology
2022-09-16T20:57:28Z
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The HT3062E battery protection chip that I have been using in my Fluffbug #robot is now impossible to buy, so I sat down and designed version 6 of the PCB using the alternative DW07D chip for battery protection. I also used the opportunity to add a mosfet to the speaker, and some handles at the top for easier attaching of accessories.Also, I replaced the broken servos in one of the prototypes with orange ones, and it looks pretty neat.
(DIR) Post #AOVJTYMVPUBU8r6UUa by deshipu@mastodon.technology
2022-09-23T20:13:09Z
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Mostly assembled the version six of the Fluffbug #robot. This time I decided to use the SG92R servos, as they are a bit stronger while being the same weight. I still need to connect and cut the cables. Also visible is the camera shield, which still requires testing.
(DIR) Post #AOVJTYmjpxATSDNRNg by deshipu@mastodon.technology
2022-09-24T16:18:46Z
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I got the little guy walking, but I had to short the new battery protection chip DW07D, as it seems to panic and cut off the battery when the servos start moving together. I couldn't find its exact current limit, but I will see if I can tune it somehow.
(DIR) Post #AOVJTck37tOTj29LkG by deshipu@mastodon.technology
2022-09-29T15:50:12Z
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Replacing one resistor next to the battery protection chip fixed the problems triggered by the overcurrent condition. The protection is still there, just requires a greater voltage drop on the battery to be triggered.
(DIR) Post #AOVJTjYbmpOwrZqoNs by deshipu@mastodon.technology
2022-10-01T17:55:57Z
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Today I had a little time and energy to do coding, so I rewrote the gait code for fluffbug using asyncio. It's still not great, with hard-coded waits everywhere, but it's a step forward, and now that it's all asyncio tasks, it's easy to add support for a screen displaying animated face while walking, or some sensors. In the future, I want a function that will estimate the movement time of the servo, and do the waiting automatically.
(DIR) Post #AOVJTnUVA2Ud3zxaXQ by deshipu@mastodon.technology
2022-10-02T15:37:40Z
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Today as an exercise in moving out of my comfort zone, I tried to re-make the PCB for Fluffbug #robot in KiCad. After about an hour and two KiCad crashes, I moved on to EasyEDA and that went much better, especially since I could find the footprints for everything. It's now shared at https://oshwlab.com/deshipu/fluffbug
(DIR) Post #AOVJTnv5ZBlCOSOoym by deshipu@mastodon.technology
2022-10-03T17:00:53Z
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Now playing with OpenSCAD a little, which will be useful later for illustrating the assembly instructions.
(DIR) Post #AOVJToQHhCiJxCzjbU by deshipu@mastodon.technology
2022-10-03T22:22:27Z
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How to make a robot in one easy step.(for some reason Mastodon doesn't let me attach the gif)https://cdn.hackaday.io/images/original/9538251664835668432.gif
(DIR) Post #AOVJTovTpDfRVxaeEC by deshipu@mastodon.technology
2022-10-12T21:41:45Z
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Today I had some spare energy after work, so I sat down and implemented that displaying of a face alongside walking, using asyncio. I'm pretty happy with it, but I will need to add some more expressions, so that I can debug using them.
(DIR) Post #AOfYwgMfQaS848xnbU by deshipu@mastodon.technology
2022-10-17T20:26:12Z
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Is anybody training an AI to automatically recognize electronic connectors from an image, and possibly some additional metadata, like pitch measurements? Would be more useful than generating photos of salmon in the river...