def makePhotoFromIntensity(intensityL, intensityR, nodes):
# linear in log-log (ohms vs lux)
# resistance is 5K at 100 lux, slope is -0.9 (per Denny)
x = 0
resistors = []
for i in (intensityL, intensityR):
if i <= 1:
lR = 5.5
else:
lI = math.log(i, 10)
lR = 5.5 - lI * 0.9
# print 'intensity', i, 'resistance', 10**lR
resistors.append(cc.Resistor(10**lR, nodes[x], nodes[x + 1]))
x += 1
return resistors
def makeMotor(emf, nodes):
return [cc.Resistor(Rm, nodes[0], 'emf'),
cc.VSrc(emf, 'emf', nodes[1])]
def makePot(alpha, nodes, value = 5000):
alpha = util.clip(alpha, 0.01, 0.99)
return [cc.Resistor(value*alpha, nodes[0], nodes[1]),
cc.Resistor(value*(1-alpha), nodes[1], nodes[2])]
def resistorFromPins(colors, pin0, pin1):
(x0, y0) = pin0
(x1, y1) = pin1
return [cc.Resistor(resistorValue(colors), nodeNameForPin(x0,y0), nodeNameForPin(x1,y1))]