#garfield Logs

May 14 2022

12:12 AM rue_mohr: SWEEET the mp3 player problem isn't the mowerbot!
12:29 AM rue_mohr: can I get the wifi working?
01:19 AM rue_mohr: #$%@$^ 2589
01:32 AM rue_mohr: ok, the webpage is worked out
01:32 AM rue_mohr: it wont work long term, the page does a get... ah, I wonder
01:34 AM rue_mohr: no, same with post, takes you to a new page,
01:34 AM rue_mohr: cant ditcht hat so I'll change it up for ajax alter
01:35 AM rue_mohr: later
01:35 AM rue_mohr: I need to know if its electrically compatible
05:21 AM Tom_L: morning
05:25 AM Tom_L: mowerbot needs to listen to tunes?
05:34 AM rue_mohr: "Help my battery is flat"
05:37 AM Tom_L: mmm
05:44 AM rue_mohr: "manual mode active"
05:44 AM rue_mohr: "automatic mode active"
05:44 AM rue_mohr: "eeek, tall grass!"
05:44 AM rue_mohr: :)
06:17 AM rue_bed: 1 bit alu
06:17 AM rue_bed: fix mowerbot
06:17 AM rue_bed: strip printers
12:49 PM aandrew: ... mp3 player on the mower bot? does it sing to itself?
01:22 PM rue_mohr: status messages
01:57 PM rue_mohr: polprog, I can hardly make it out
01:57 PM polprog: me too rue_mohr
01:57 PM polprog: i have loads of work
01:57 PM polprog: mechanical TV
01:57 PM polprog: thesis
01:57 PM rue_mohr: did you see if you could get to the 8 ohm coil?
01:57 PM polprog: other uni work
01:58 PM polprog: I got a different speaker because the original seller lost that one
01:58 PM polprog: i got money back
01:58 PM polprog: this one has 18 ohm coil
01:58 PM polprog: i could get to it easily, disconnected it from the transformer and used the provided screw terminal block to add an rca socket
01:58 PM polprog: it works well
01:58 PM polprog: did you see the video?
02:01 PM rue_mohr: yea, but my sound might have been being goofy
02:02 PM polprog: it sounds like you would expect it
02:02 PM polprog: very silent cause its driven from the headphone output of my sound card
02:04 PM rue_mohr: yea
02:05 PM polprog: imma connect it to the car stereo
02:06 PM rue_mohr: ok
02:06 PM polprog: its only 10W though, the stereo is "30" W but ill be careful not to blow it
02:06 PM rue_mohr: I need a 12V speaker for the mowerbot
02:06 PM polprog: allright, time to make supper
02:06 PM rue_mohr: if its going to come back to life
02:06 PM polprog: get a horn speaker, so it screams :D
02:06 PM rue_mohr: check out my 3d printed spools...
02:06 PM polprog: put it on top of it like a little head (and eyes)
02:06 PM polprog: you could add a CCTV camera to it
02:06 PM rue_mohr: :)
02:06 PM polprog: :D
02:07 PM polprog: show me the spools!
02:07 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1240003.jpg
02:14 PM polprog: Ah cool
02:14 PM polprog: I want a pair of these
02:14 PM polprog: https://www.thingiverse.com/thing:2749597
02:14 PM polprog: Friend will be printing the disk for the mechanical TV, ill have to ask him to print me a pair of these
02:15 PM rue_mohr: interesting
02:15 PM polprog: They arent a compliant mechanism but i dont mind it
02:26 PM polprog: i could use a pair of them, they seem cool
02:26 PM polprog: i wanna design some optical elements when i have free time
02:26 PM polprog: maybe some interferometer
02:26 PM polprog: i have a couple IR beamsplitters from CD drives
02:45 PM rue_mohr: hmm
02:45 PM rue_mohr: damnit, havn't had breakfast and half the day is over
02:49 PM polprog: trying to convince him to print me the pliers
02:49 PM polprog: keep your fingers crossed
04:09 PM rue_mohr: what does opencv do right now polprog ?
04:09 PM rue_mohr: camera access, circle regognition?
04:13 PM polprog: No recognition, just stream decoding
04:14 PM polprog: Rtp goes in, ndarray goes out
04:15 PM polprog: https://gist.github.com/polprog/5cf8d81e6f5a21a590a5ccd7b4e90b59#file-read_rtsp_mp-py
04:16 PM polprog: this is my multithreaded implementation. This way the worker thread can take as much time as it wants to process the frame while the grabber thread just grabs next frames from the stream
04:16 PM polprog: And when the worker thread asks for next frame its gonna get the next newest one
04:17 PM polprog: If this was in one loop, it would do frame by frame as the stream goes, clogging the buffer and increasing latency
04:17 PM polprog: It will be driving a power led for a mechanical tv
04:18 PM rue_mohr: k
04:18 PM rue_mohr: will it be colour?
04:19 PM rue_mohr: disc mechanical?
04:19 PM rue_mohr: do you get to account for window radius?
04:22 PM polprog: Monochrome, disc mechanical
04:22 PM polprog: We have a diameter of 20cm and targeting a 2x2 image
04:22 PM polprog: Not acconting for the distortion
04:27 PM polprog: Goodnight!
04:30 PM rue_shop3: have the software converting the video correct for the disortion
04:31 PM rue_shop3: for 2x2, you could use a LUT
04:33 PM polprog: Im late on this anyway, got a week to make it work and they havent even printed the disc :D
04:34 PM polprog: Gotta make the driver for the led and the actual pwm code
04:34 PM polprog: And at the same time doing my thesis, need to learn how to do DSP on the spartan 7
04:34 PM polprog: Nn
04:35 PM rue_shop3: I love it when everyone thinks that if all the parts are ready by the deadline that it can all just be assmbled and will work
04:41 PM polprog: Yeah.....
04:42 PM polprog: Im the project manager to some extent :-D
05:44 PM rue_shop3: polprog, well, crack the whip
07:45 PM rue_mohr: https://www.youtube.com/watch?v=EC1Ous1zT5w&list=PLWKtKD_FaUF6IsFc1maERpOwWM2hrOM3b
09:45 PM aandrew: might be of interest: https://www.youtube.com/watch?v=EC1Ous1zT5w&list=PLWKtKD_FaUF6IsFc1maERpOwWM2hrOM3b
10:28 PM rue_shop3: I think the volt meter shorted out the computer supply
10:28 PM rue_shop3: its all fine
10:28 PM rue_shop3: the source of the short hasn't turned up
10:28 PM rue_shop3: but that meter has a bad lead