wactbbot

The Latest

Oct 24, 2011 / 15 notes

play around with photo resistor array controlled by multiplexer; not sure if the circuit makes really sense. What I aim on is a flexible (mechanical) photo resistor n x m array with 1024 “color” steps

BTW

if you’re in Berlin and you have accidentaly the ESSID wactbbot in your scanning list you can telnet to 192.168.0.177 and:

  • l… left gear
  • r… right gear
  • b … both
  • p… positive (forward)
  • n… negative … so that

    bp bp

let it roll on 25% speed forward until it crashes or you say

s

Oct 3, 2011 / 5 notes

first stage of my

wactbbot

  • old wlan router
  • arduino uno & ethernet
  • connected over TWI/i2c
  • motor shieldV3
  • two DC-motors …
…I have to take something like 100kOhm for Ra (r2) if Rp (rp goes from 200Ohm to 600kOhm…

 r2 <- seq(5e3,1e6,20e3)
 rp <- seq(200,600000,5000)
 z <- outer(rp,r2,function(x,y){5/(x+y)*y})
 persp(rp,r2,z, 
      theta=55, 
      phi=20, 
      xlab="Rp",
      ylab="Ra", 
      zlab="U",
      ticktype="detailed",
      lwd=.1,
      col="black")
Apr 7, 2011 / 1 note

…I have to take something like 100kOhm for Ra (r2) if Rp (rp goes from 200Ohm to 600kOhm…

 r2 <- seq(5e3,1e6,20e3)
 rp <- seq(200,600000,5000)
 z <- outer(rp,r2,function(x,y){5/(x+y)*y})
 persp(rp,r2,z, 
      theta=55, 
      phi=20, 
      xlab="Rp",
      ylab="Ra", 
      zlab="U",
      ticktype="detailed",
      lwd=.1,
      col="black")
stop
Apr 3, 2011

stop

start
Apr 3, 2011 / 1 note

start

motor-shield-3 (von westfw)

on the backside of the board, one can see that the + for LED1 ist the right pin for LED2 the left
Apr 3, 2011

motor-shield-3 (von westfw)

on the backside of the board, one can see that the + for LED1 ist the right pin for LED2 the left