#robotics Logs

Mar 08 2019

12:26 AM zhanx: ok i if i am using a ping senor from 6"-12" nominal why does smoothing suck so bad, what i am doing wrong
12:49 AM rue_mohr: ultrasonic?
03:49 AM goppo: anyone know how non-lidar equipped rovers avoid obstacles?
03:49 AM goppo: ultrasonic sensors can't really give you the width of the obstacles
03:54 AM deshipu: bumpers \o/
03:58 AM SleepyTurtle: goppo: cameras are an alternative
04:00 AM SleepyTurtle: ultrasonic can give you width, it depends on how you're processing the data and your sensor
12:31 PM deshipu: https://build-its-inprogress.blogspot.com/2019/03/hello-there-mini-cheetah.html
12:31 PM deshipu: a very nice little robot!
02:29 PM anonnumberanon: That's very cool.
02:30 PM anonnumberanon: It is missing a computer-vision-aiming-AK 74 to take care of annoying robot-fearing people.
02:36 PM deshipu: meh, weaponizing is one of the most boring things you can do with a robot
02:36 PM deshipu: not to mention morally apprehensive
02:38 PM krizoek: anyone got a good idea for a project. for someone interested in learning c and got some usb relays and usb ADCs..?
02:38 PM krizoek: i mean, for something that could be useful
02:40 PM deshipu: a clock perhaps?
02:41 PM krizoek: i have many clocks already
02:42 PM deshipu: what don't you have, oh owner of multiple clocks?
02:43 PM krizoek: i may lack the interest to make anything even if i could.. just looking for ideas for something that might sound interesting
02:44 PM deshipu: I'm afraid we can't provide you with interest, as we are somewhat lacking in that regard ourselves
02:44 PM krizoek: i mean. lack interest in my own ideas. i can't think of anything that would be useful
02:45 PM deshipu: Perhaps you could start with a practical problem that you have.
02:45 PM krizoek: that's good advice, ty
04:09 PM anonnumberanon: krizoek, do you check the weather or temperature often?
04:09 PM anonnumberanon: >weather station
04:10 PM anonnumberanon: wait not that's not #robotics related
04:12 PM anonnumberanon: how to charge a small battery with a solar panel that is 1V at 200 milliamps?
04:12 PM anonnumberanon: Let's say a 3.7V LIPOcell.
04:14 PM polprog: my best guess would be a boost converter, how efficient that is i have no idea unfortunately
04:16 PM anonnumberanon: yes but with sun all day long it would be okay im thinking, im looking into it, would really like to use that solar array
04:21 PM polprog: probably youd be ok
04:22 PM polprog: obv its a better idea to rewire the panel to give out 4v @ 50mA if you can
04:22 PM polprog: then you can feed that to a charge controller direcrly
04:22 PM anonnumberanon: this part seems nice, measures a centimeter only https://www.aliexpress.com/item/0-9-5V-To-5V-DC-DC-Step-Up-Power-Module-Voltage-Boost-Converter-Board-1/32786164687.html?spm=2114.search0104.3.15.25461a25jWJVQE&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10130_10068_10890_10547_319_10546_317_10548_10545_10696_453_10084_454_10083_10618_10307_537_536_10902_10059_10884_10887_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=
04:22 PM anonnumberanon: 8aad55f3-5070-44e7-abf6-5aa64b01842b-2&algo_pvid=8aad55f3-5070-44e7-abf6-5aa64b01842b&transAbTest=ae803_3
04:22 PM polprog: directly*
04:22 PM polprog: r.i.p.
04:23 PM polprog: thats a neat board heh
04:23 PM anonnumberanon: http://tiny.cc/ry9w3y
04:23 PM polprog: yeah i see the link
04:26 PM anonnumberanon: yeah i see what you mean, don't know how though
04:27 PM anonnumberanon: the solar cell is about 9 square centimeters
04:27 PM polprog: you dont know how to rewire a panel?
04:27 PM polprog: ah its a sinlge unit ok
04:28 PM polprog: i thought you had like a bunch of smaller ones connected in paralell
04:28 PM anonnumberanon: no, i've seen a picture or two of it on the internet though but I don't remember what cell I have
04:28 PM anonnumberanon: i only have that small one
04:29 PM anonnumberanon: i picked it up because i thought it would be great to try to make a small weather station