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
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")
