#robotics Logs

Jan 28 2021

01:48 AM Jak_o_Shadows: My PCB's arrived!
06:05 AM veverak: pic
06:06 AM Jak_o_Shadows: lol. I uploaded the image to pasteall but forgot to actually post it
06:06 AM Jak_o_Shadows: https://pasteall.org/media/9/7/973e97b0b79d0f299787d929bb8bf901.png
06:13 AM veverak: what is that?
06:16 AM Jak_o_Shadows: 4 channel serial servo driver
06:16 AM Jak_o_Shadows: will also use it for WS2801 LED's, when those arrive
09:23 AM rue_mohr: but I have my super-precision 8 channel driver
09:24 AM rue_mohr: oh you did a baord
09:24 AM rue_mohr: ooo small
09:24 AM rue_mohr: hey wait, if the 8 pin is a tiny13, whats the big chip?
09:25 AM rue_mohr: er, what controller ARE you using?
09:50 PM yCrazyEdd is now known as CrazyEddy
09:50 PM flav0r_: hey !
10:24 PM rue_mohr: so, to port myself to a robotic platform...
10:24 PM rue_mohr: I'll need batteries and power converters
10:24 PM rue_mohr: and a cpu
10:25 PM rue_mohr: or a dpu (distributed processing unit)
10:25 PM rue_mohr: hmm
10:27 PM rue_mohr: neurons can supposedly fire up to 1kHz
10:28 PM rue_mohr: if the brain has 100G neurons
10:31 PM rue_mohr: lets say we have a system that can do 100Gflops
10:32 PM rue_mohr: so it'd be too slow
10:32 PM rue_mohr: we need to update 100G in 1ms
10:32 PM rue_mohr: is *down to* 1ms
10:32 PM rue_mohr: hmmm
10:32 PM rue_mohr: so we need 100Tflops
10:33 PM rue_mohr: ok
10:34 PM rue_mohr: we can do up to about 10Tflops
10:34 PM rue_mohr: so right now we need 10 systems
10:34 PM rue_mohr: which is good, breaks up a ram a bit
10:35 PM rue_mohr: thats overkill to some degree
10:35 PM rue_mohr: thats able to sustain every neuron going full out
10:35 PM rue_mohr: which a brain cant even do
10:35 PM rue_mohr: just by power consumption
10:36 PM rue_mohr: hmmm
10:37 PM rue_mohr: so then, its important to know the required resolution of signals
10:39 PM rue_mohr: PFM has a huge dynamic range
10:40 PM rue_mohr: the required resolution could be quite low
10:40 PM rue_mohr: its feedback loops anyhow
10:41 PM rue_mohr: hmm and the brains network is not fully meshed
10:42 PM rue_mohr: limited term computation
10:42 PM rue_mohr: hmm
10:45 PM rue_mohr: I suppose there needs to be ram to store the state and the link weights
10:46 PM rue_mohr: and the linking can be a fixed pattern *or* be another dynamic relation
10:46 PM rue_mohr: but dynamic link lists dont make a lot of sense
11:14 PM rue_mohr: https://www.arduino.cc/en/tutorial/knob