class RoboRealmInterface:
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
def get_pos(self):
try:
vals = (float(self.rr.GetVariable("FIDUCIAL_X_COORD")),
float(self.rr.GetVariable("FIDUCIAL_Y_COORD")))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_pos(self)
return
return np.array(vals)
def get_orient(self):
try:
val = float(self.rr.GetVariable("FIDUCIAL_ORIENTATION"))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_orient(self)
return
val = np.mod(val + 180., 360.) - 180.
return val
def wait(self):
self.rr.WaitImage(10)
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
port_h = serial.open_serial_port("COM9")
serial.set_global_port(port_h)
class Calibrator:
how_change_motors_LEFT = [[2, 1], [0, 1], [0, 1], [1, 1], [1, 1], [2, 1]]
how_change_motors_RIGHT = [[1, 0], [1, 0], [2, 0], [2, 0], [0, 0], [0, 0]]
bases = [np.array([0,1]),np.array([np.sqrt(3)/2,0.5]),np.array([np.sqrt(3)/2,-0.5])]
expected_travel_dirs = [0, -np.pi/3, -2*np.pi/3, -np.pi, 2*np.pi/3, np.pi/3]
x_boundaries = [6, 181, 352, 525, 696]
y_boundaries = [6, 178, 352, 525, 696]
current_motor_settings = [[0, 0], [0, 0], [0, 0]]
data_points_for_straighten = 1000 #Number of data points we ask for while straightening.
trusted_data_points = 200 #Number of data points we collect before worrying about running in to walls.
spin_settings_history = [{}, {}]
straight_settings_history = [{}, {}, {}]
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
port_h = serial.open_serial_port("COM9")
serial.set_global_port(port_h)
def get_position_data_batch(self, direction, length):
stop_walk()
pos_list = np.zeros((length,2))
orient_list = np.zeros(length)
h = 0
early_abort = False
new_blobs = 0
blobs= 0
move_steps(direction, length)
while (h<length) and not early_abort:
pos_list[h] = np.array(self.get_rr_pos())
orient_list[h] = self.get_rr_orient()
self.rr.WaitImage(10)#Wait for roborealm to get a new image, so we aren't just polling the same var over and over again.
if h>self.trusted_data_points:
for x in self.x_boundaries:
if abs(pos_list[h][0]-x)<=15:
print("Blob position (%d, %d) too close to x=%d. h=%d"%(pos_list[h][0], pos_list[h][1], x, h))
early_abort = True
for y in self.y_boundaries:
if abs(pos_list[h][1]-y)<=15:
print("Blob position (%d, %d) too close to y=%d. h=%d"%(pos_list[h][0], pos_list[h][1], y, h))
early_abort = True
h += 1 #update counter
stop_walk()
return (pos_list, orient_list, h)
def get_rr_pos(self):
try:
vals=(float(self.rr.GetVariable("FIDUCIAL_X_COORD")), float(self.rr.GetVariable("FIDUCIAL_Y_COORD")))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_pos(self)
return
return vals
def get_rr_orient(self):
try:
val = float(self.rr.GetVariable("FIDUCIAL_ORIENTATION"))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_orient(self)
return
val = np.mod(val+180.,360.)-180.
return val
def full_calibrate(self):
#first, calibrate droplet spin for one direction. This will give us motor sign and relative values for the three motors.
#then calibrate directions 0, 2, and 4 (or 1, 3, and 5)
timestamp = time.strftime('%m-%d_%H%M')
fileName = "data\\dmc_calib_" + timestamp
self.calibrate_both_spins(fileName)
self.calibrate_all_straight(fileName)
for i in range(2):
serial.write("cmd write_motor_settings")
print("!!!\nDone calibrating!\n!!!")
def calibrate_both_spins(self, fileName):
self.calibrate_droplet_spin(True, fName=fileName) #CW
self.calibrate_droplet_spin(False, fName=fileName) #CCW
def calibrate_all_straight(self, fileName):
for direction in range(6):
self.calibrate_droplet_straight(direction, fName=fileName)
def test_spin_settings(self, motor_values, cw_q, output_stream):
try:
val = self.spin_settings_history[cw_q][str(motor_values)]
except KeyError:
'''We haven't done that one before.'''
else:
return val
set_motors(7-cw_q, *motor_values)
try:
(pos_list, orient_list, num_good_points) = self.get_position_data_batch(7-cw_q, self.data_points_for_straighten)
except MyException:
return
if num_good_points<0.8*self.data_points_for_straighten:
print("Not enough good data.")
return self.test_spin_settings(motor_values, cw_q, output_stream)
(center, radius, residual, sign) = maths.lsq(pos_list, orient_list)
radial_velocity = maths.get_radial_velocity(orient_list)
print("mean delta orient: %f"%(radial_velocity))
#print("Dump")
#print(orient_list)
#print(np.gradient(orient_list))
#print(radial_velocity)
print("Radius: %f"%(radius))
self.spin_settings_history[cw_q][str(motor_values)] = (radius, radial_velocity)
#print("settings_history%s = %f"%(str(motor_values), radius))
#print("settings_history: %s"%(str(self.settings_history)))
orient_changed = orient_list[-1]-orient_list[0]
output_stream.write("%f, %f, %f, %f, %f, %f\n"%(motor_values[0], motor_values[1], motor_values[2], radius, radial_velocity, orient_changed))
output_stream.flush()
return self.test_spin_settings(motor_values, cw_q, output_stream)
def calibrate_droplet_spin(self, cw_q, fName=None):
alpha = 1. #reflection coefficient
gamma = 2. #expansion coefficient
rho = -0.5 #contraction coefficient
sigma = 0.5 #shrink coefficient
x_0 = np.array([0, 0, 0])
x_1 = np.array([-200, 200, 200])
x_2 = np.array([200, -200, 200])
x_3 = np.array([200, 200, -200])
spx = np.array([x_0, x_1, x_2, x_3])
old_spx = np.zeros((4,3))
if fName is None:
settings_history_fName = 'dmc_data_%s_all.csv'%("cw" if cw_q else "ccw")
simplex_history_fName = 'dmc_data_%s_spx.csv'%("cw" if cw_q else "ccw")
else:
settings_history_fName = fName + "_%s_hist.csv"%("cw" if cw_q else "ccw")
simplex_history_fName = fName + "_%s_spx.csv"%("cw" if cw_q else "ccw")
settings_history_file = open(settings_history_fName,'w')
settings_history_file.write('mot0set, mot1set, mot2set, radius, mean delta orient, total delta orient\n')
simplex_history_file = open(simplex_history_fName,'w')
simplex_history_file.write('spx00, spx01, spx02, rad0, spx10, spx11, spx12, rad1, spx20, spx21, spx22, rad2, spx30, spx31, spx32, rad3\n')
finished = False
def fun(x):
(radius, radial_velocity) =self.test_spin_settings(x, cw_q, settings_history_file)
desired_spin_dir = -1 if cw_q else 1
if desired_spin_dir*radial_velocity>0:
return radius - 10*abs(radial_velocity) #if we're spinning in the right direction
else:
return radius + 100*abs(radial_velocity) #if we're spinning in the wrong direction
def full_fun(x):
return self.test_spin_settings(x, cw_q, settings_history_file)
try:
while(True):
spx = np.array(sorted(spx, key=fun))
if str(spx) == str(old_spx):
finished = True
old_spx = copy.deepcopy(spx)
radii = [full_fun(point)[0] for point in spx]
output_array = np.array(map(lambda spx_point, radius: np.append(spx_point, radius), spx, radii)).flatten().tolist()
simplex_history_file.write(",".join(map(str, output_array))+"\n")
simplex_history_file.flush()
print("spx: %s"%(str(spx)))
x_o = np.mean(spx[:-1],0).astype(int)
x_r = (x_o + alpha*(x_o - spx[-1])).astype(int)
if (fun(x_r)<fun(spx[-2])) and (fun(x_r)>=fun(spx[0])):
print("Reflecting.")
spx[-1] = x_r
elif fun(x_r)<fun(spx[0]):
x_e = (x_o + gamma*(x_o-spx[-1])).astype(int)
if fun(x_e)<fun(x_r):
print("Expanding.")
spx[-1] = x_e
else:
print("Reflecting.")
spx[-1] = x_r
else:
x_c = (x_o + rho*(x_o-spx[-1])).astype(int)
if fun(x_c)<fun(spx[-1]):
print("Contracting.")
spx[-1] = x_c
else:
for i in range(1,4):
spx[i] = (spx[0] + sigma*(spx[i]-spx[0])).astype(int)
if finished:
spx = np.array(sorted(spx, key=fun))
for i in range(3):
set_motors(7-cw_q, *spx[0])
print("Done with spinning %s!"%("cw" if cw_q else "ccw"))
settings_history_file.close()
simplex_history_file.close()
return cw_q
except KeyboardInterrupt:
print("Calibration interrupted by user.")
settings_history_file.close()
simplex_history_file.close()
def spin_for_safe_straight(self, direction):
pos = self.get_rr_pos()
i=1
while pos[0] >= self.x_boundaries[i]:
i+=1
temp_x = pos[0] - self.x_boundaries[i-1]
x_bound = self.x_boundaries[i]-self.x_boundaries[i-1]
j=1
while pos[1] >= self.y_boundaries[j]:
j+=1
temp_y = pos[1] - self.y_boundaries[j-1]
y_bound = self.y_boundaries[j]-self.y_boundaries[j-1]
if (temp_x>(x_bound/3)) and (temp_x<((2*x_bound)/3)) and (temp_y>(y_bound/3)) and (temp_y<((2*y_bound)/3)):
print("We're basically in the middle. Should be fine.")
return
if temp_x<(x_bound/2):
if temp_y<(y_bound/2): #bottom left quadrant of our square
desired_orientationInit = -45
else: #top left quadrant of our square
desired_orientationInit = -135
else:
if temp_y<(y_bound/2): #bottom right quadrant of our square
desired_orientationInit = 45
else: #top right quadrant of our square
desired_orientationInit = 135
desired_orientation = desired_orientationInit + direction*60
desired_orientation = np.mod(desired_orientation+180,360)-180
print("direction: %d, temp_pos: (%f, %f), Desired Orientation: %f, Desired orientation, adjusted: %f"%(direction, temp_x, temp_y, desired_orientationInit, desired_orientation))
while(True):
last_orient = self.get_rr_orient()
delta_orient = np.mod(desired_orientation-last_orient+180,360)-180
if delta_orient>0:
move_steps(7, 2000)
else:
move_steps(6,2000)
count=0
while count<200: #timeout of ~2 seconds of no movement.
orient = self.get_rr_orient()
#print("Orient: %f"%(orient))
if abs(orient-last_orient)>0.5:
count=0
self.rr.WaitImage(10)
orient = np.mod(orient+180,360)-180
if abs(desired_orientation-orient)<10:
print("Spin complete.")
return
last_orient=orient
count+=1
print("Droplet not moving? Trying again.")
def test_straight_settings(self, x, direction, output_stream):
mot_vals = get_motor_vals_for_dir(x, direction)
try:
return self.straight_settings_history[direction][str(mot_vals)]
except KeyError:
'''We haven't done that one before.'''
set_motors(direction,*mot_vals)
try:
self.spin_for_safe_straight(direction)
(pos_list, orient_list, num_good_points) = self.get_position_data_batch(direction, self.data_points_for_straighten)
except MyException:
return
if num_good_points<0.8*self.data_points_for_straighten:
print("Not enough good data.")
return self.test_straight_settings(mot_vals, direction, output_stream)
(center, radius, residual, sign) = maths.lsq(pos_list, orient_list)
distance_traveled = np.linalg.norm(pos_list[-1]-pos_list[0])
travel_dir = maths.get_travel_dir(pos_list[0],pos_list[-1],orient_list[0],self.expected_travel_dirs[direction])
self.straight_settings_history[direction][str(mot_vals)] = (radius, travel_dir, distance_traveled,)
#print("settings_history%s = %f"%(str(motor_values), radius))
#print("settings_history: %s"%(str(self.settings_history)))
output_stream.write("%d, %d, %d, %f, %f, %f\n"%(mot_vals[0], mot_vals[1], mot_vals[2], radius, sign, distance_traveled))
output_stream.flush()
return self.test_straight_settings(mot_vals, direction, output_stream)
def calibrate_droplet_straight(self, direction, fName=None):
alpha = 1. #reflection coefficient
gamma = 2. #expansion coefficient
rho = -0.5 #contraction coefficient
sigma = 0.5 #shrink coefficient
x_0 = np.array([0,0])
x_1 = np.array([100,-100])
x_2 = np.array([-100,100])
spx = np.array([x_0, x_1, x_2])
old_spx = np.zeros((3,2))
if fName is None:
settings_history_fName = 'dmc_data_%s.csv'%("cw" if cw_q else "ccw")
simplex_history_fName = 'dmc_data_%s.csv'%("cw" if cw_q else "ccw")
else:
settings_history_fName = fName + "_%s_hist.csv"%(direction)
simplex_history_fName = fName + "_%s_spx.csv"%(direction)
settings_history_file = open(settings_history_fName,'w')
settings_history_file.write('mot0set, mot1set, mot2set, radius, sign, distance_traveled\n')
simplex_history_file = open(simplex_history_fName,'w')
simplex_history_file.write('spx00, spx01, spx02, rad0, spx10, spx11, spx12, rad1, spx20, spx21, spx22, rad2, spx30, spx31, spx32, rad3\n')
finished = False
def fun(x):
(radius, travel_dir, dist_traveled) =self.test_straight_settings(x, direction, settings_history_file)
return -radius - travel_dir*dist_traveled
try:
while(True):
spx = np.array(sorted(spx, key=fun))
if str(spx) == str(old_spx):
finished = True
old_spx = copy.deepcopy(spx)
func_values = [fun(point) for point in spx]
output_array = np.array(map(lambda spx_point, radius: np.append(spx_point, radius), spx, func_values)).flatten().tolist()
simplex_history_file.write(",".join(map(str, output_array))+"\n")
simplex_history_file.flush()
print("spx: %s"%(str(spx)))
x_o = np.mean(spx[:-1],0).astype(int)
x_r = (x_o + alpha*(x_o - spx[-1])).astype(int)
if (fun(x_r)<fun(spx[-2])) and (fun(x_r)>=fun(spx[0])):
print("Reflecting.")
spx[-1] = x_r
elif fun(x_r)<fun(spx[0]):
x_e = (x_o + gamma*(x_o-spx[-1])).astype(int)
if fun(x_e)<fun(x_r):
print("Expanding.")
spx[-1] = x_e
else:
print("Reflecting.")
spx[-1] = x_r
else:
x_c = (x_o + rho*(x_o-spx[-1])).astype(int)
if fun(x_c)<fun(spx[-1]):
print("Contracting.")
spx[-1] = x_c
else:
for i in range(1,3):
spx[i] = (spx[0] + sigma*(spx[i]-spx[0])).astype(int)
if finished:
set_motors(i, *spx[0])
print("We're done straightening direction %d"%direction)
settings_history_file.close()
simplex_history_file.close()
return cw_q
except KeyboardInterrupt:
print("Calibration interrupted by user.")
settings_history_file.close()
simplex_history_file.close()
serial.cleanup()
def calibrate_degrees_per_step(self, cw_q, num_steps = 50, num_runs = 5, fName = None):
"""
Calibrates the number of degrees per kilostep of droplet motion rotation
"""
orient_buf = np.array([0] * 100)
rot_angle = np.array([0] * num_runs)
if fName is None:
fName = 'data\\dmc_data_deg_per_kilostep.csv'
else:
fName = fName + "_deg_per_kilostep.csv"
try:
fh = open(fName, 'w')
for r in range(num_runs):
start_orient = self.get_rr_orient()
move_steps(7 - cw_q, num_steps)
while(True):
for i in range(100):
orient_buf[i] = self.get_rr_orient()
self.rr.WaitImage(10)
if(abs(orient_buf[-1]-orient_buf[0])<0.01):
#print("Breaking, orient_buf: %s"%orient_buf)
print("Breaking.")
time.sleep(2)
#This condition is firing prematurely.
break
stop_orient = self.get_rr_orient()
rot_angle[r] = stop_orient - start_orient
if(cw_q):
rot_angle[r]=rot_angle[r]*-1
if(rot_angle[r] < 0):
rot_angle[r] += 360
print("[Run %d] Rotation Angle: %d (deg)\n"%(r, rot_angle[r]))
fh.write("%d, %d\n"%(r, rot_angle[r]))
deg_per_kilostep = int(np.mean(rot_angle) * 1000. / num_steps)
print("Degrees per kilostep: %d\n"%deg_per_kilostep)
fh.write("%d\n"%deg_per_kilostep)
fh.close()
except KeyboardInterrupt:
print("Calibration interrupted by user.")
stop_walk()
fh.close()
def calibrate_dist_per_step(self, direction, num_steps = 100, fName = None):
"""
Calibrates the number of degrees per kilostep of droplet motion rotation
"""
pos_buf = np.zeros((100,2))
if fName is None:
fName = 'data\\dmc_data_deg_per_kilostep.csv'
else:
fName = fName + "_deg_per_kilostep.csv"
try:
start_pos = np.array(self.get_rr_pos())
move_steps(direction, num_steps)
while(True):
for i in range(100):
pos_buf[i] = np.array(self.get_rr_pos())
self.rr.WaitImage(10)
if np.linalg.norm(pos_buf[0]-pos_buf[-1])<1:
break
stop_pos = np.array(self.get_rr_pos())
dist = np.linalg.norm(start_pos-stop_pos)
mm_per_kilostep = int(dist/.69 * 1000. / num_steps)
print("dist: %f, mm per kilostep: %d\n"%(dist,mm_per_kilostep))
except KeyboardInterrupt:
print("Calibration interrupted by user.")
stop_walk()
def __del__(self):
serial.cleanup()
self.rr.close()
print("Finished cleaning up myself.")
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
port_h = serial.open_serial_port("COM9")
serial.set_global_port(port_h)
class Calibrator:
how_change_motors_LEFT = [[2, 1], [0, 1], [0, 1], [1, 1], [1, 1], [2, 1]]
how_change_motors_RIGHT = [[1, 0], [1, 0], [2, 0], [2, 0], [0, 0], [0, 0]]
bases = [
np.array([0, 1]),
np.array([np.sqrt(3) / 2, 0.5]),
np.array([np.sqrt(3) / 2, -0.5])
]
expected_travel_dirs = [
0, -np.pi / 3, -2 * np.pi / 3, -np.pi, 2 * np.pi / 3, np.pi / 3
]
x_boundaries = [6, 181, 352, 525, 696]
y_boundaries = [6, 178, 352, 525, 696]
current_motor_settings = [[0, 0], [0, 0], [0, 0]]
data_points_for_straighten = 1000 #Number of data points we ask for while straightening.
trusted_data_points = 200 #Number of data points we collect before worrying about running in to walls.
spin_settings_history = [{}, {}]
straight_settings_history = [{}, {}, {}]
def __init__(self):
self.rr = RR_API()
self.rr.Connect("localhost")
port_h = serial.open_serial_port("COM9")
serial.set_global_port(port_h)
def get_position_data_batch(self, direction, length):
stop_walk()
pos_list = np.zeros((length, 2))
orient_list = np.zeros(length)
h = 0
early_abort = False
new_blobs = 0
blobs = 0
move_steps(direction, length)
while (h < length) and not early_abort:
pos_list[h] = np.array(self.get_rr_pos())
orient_list[h] = self.get_rr_orient()
self.rr.WaitImage(
10
) #Wait for roborealm to get a new image, so we aren't just polling the same var over and over again.
if h > self.trusted_data_points:
for x in self.x_boundaries:
if abs(pos_list[h][0] - x) <= 15:
print(
"Blob position (%d, %d) too close to x=%d. h=%d" %
(pos_list[h][0], pos_list[h][1], x, h))
early_abort = True
for y in self.y_boundaries:
if abs(pos_list[h][1] - y) <= 15:
print(
"Blob position (%d, %d) too close to y=%d. h=%d" %
(pos_list[h][0], pos_list[h][1], y, h))
early_abort = True
h += 1 #update counter
stop_walk()
return (pos_list, orient_list, h)
def get_rr_pos(self):
try:
vals = (float(self.rr.GetVariable("FIDUCIAL_X_COORD")),
float(self.rr.GetVariable("FIDUCIAL_Y_COORD")))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_pos(self)
return
return vals
def get_rr_orient(self):
try:
val = float(self.rr.GetVariable("FIDUCIAL_ORIENTATION"))
except ValueError:
print("RR didn't have the fiducial.")
time.sleep(1)
return self.get_rr_orient(self)
return
val = np.mod(val + 180., 360.) - 180.
return val
def full_calibrate(self):
timestamp = time.strftime('%m-%d_%H%M')
fileName = "data\\dmc_calib_" + timestamp
self.calibrate_both_spins(fileName)
self.calibrate_all_straight(fileName)
for i in range(2):
serial.write("cmd write_motor_settings")
print("!!!\nDone calibrating!\n!!!")
def calibrate_both_spins(self, fileName):
self.calibrate_droplet_spin(True, fName=fileName) #CW
self.calibrate_droplet_spin(False, fName=fileName) #CCW
def calibrate_all_straight(self, fileName):
for direction in range(6):
self.calibrate_droplet_straight(direction, fName=fileName)
def test_spin_settings(self, motor_values, cw_q, output_stream):
try:
val = self.spin_settings_history[cw_q][str(motor_values)]
except KeyError:
'''We haven't done that one before.'''
else:
return val
set_motors(7 - cw_q, *motor_values)
try:
(pos_list, orient_list,
num_good_points) = self.get_position_data_batch(
7 - cw_q, self.data_points_for_straighten)
except MyException:
return
if num_good_points < 0.8 * self.data_points_for_straighten:
print("Not enough good data.")
return self.test_spin_settings(motor_values, cw_q, output_stream)
(center, radius, residual, sign) = maths.lsq(pos_list, orient_list)
radial_velocity = maths.get_radial_velocity(orient_list)
print("mean delta orient: %f" % (radial_velocity))
#print("Dump")
#print(orient_list)
#print(np.gradient(orient_list))
#print(radial_velocity)
print("Radius: %f" % (radius))
self.spin_settings_history[cw_q][str(motor_values)] = (radius,
radial_velocity)
#print("settings_history%s = %f"%(str(motor_values), radius))
#print("settings_history: %s"%(str(self.settings_history)))
orient_changed = orient_list[-1] - orient_list[0]
output_stream.write("%f, %f, %f, %f, %f, %f\n" %
(motor_values[0], motor_values[1], motor_values[2],
radius, radial_velocity, orient_changed))
output_stream.flush()
return self.test_spin_settings(motor_values, cw_q, output_stream)
def calibrate_droplet_spin(self, cw_q, fName=None):
alpha = 1. #reflection coefficient
gamma = 2. #expansion coefficient
rho = -0.5 #contraction coefficient
sigma = 0.5 #shrink coefficient
x_0 = np.array([0, 0, 0])
x_1 = np.array([-200, 200, 200])
x_2 = np.array([200, -200, 200])
x_3 = np.array([200, 200, -200])
spx = np.array([x_0, x_1, x_2, x_3])
old_spx = np.zeros((4, 3))
if fName is None:
settings_history_fName = 'dmc_data_%s_all.csv' % ("cw" if cw_q else
"ccw")
simplex_history_fName = 'dmc_data_%s_spx.csv' % ("cw" if cw_q else
"ccw")
else:
settings_history_fName = fName + "_%s_hist.csv" % ("cw" if cw_q
else "ccw")
simplex_history_fName = fName + "_%s_spx.csv" % ("cw" if cw_q else
"ccw")
settings_history_file = open(settings_history_fName, 'w')
settings_history_file.write(
'mot0set, mot1set, mot2set, radius, mean delta orient, total delta orient\n'
)
simplex_history_file = open(simplex_history_fName, 'w')
simplex_history_file.write(
'spx00, spx01, spx02, rad0, spx10, spx11, spx12, rad1, spx20, spx21, spx22, rad2, spx30, spx31, spx32, rad3\n'
)
finished = False
def fun(x):
(radius, radial_velocity) = self.test_spin_settings(
x, cw_q, settings_history_file)
desired_spin_dir = -1 if cw_q else 1
if desired_spin_dir * radial_velocity > 0:
return radius - 10 * abs(
radial_velocity) #if we're spinning in the right direction
else:
return radius + 100 * abs(
radial_velocity) #if we're spinning in the wrong direction
def full_fun(x):
return self.test_spin_settings(x, cw_q, settings_history_file)
try:
while (True):
spx = np.array(sorted(spx, key=fun))
if str(spx) == str(old_spx):
finished = True
old_spx = copy.deepcopy(spx)
radii = [full_fun(point)[0] for point in spx]
output_array = np.array(
map(lambda spx_point, radius: np.append(spx_point, radius),
spx, radii)).flatten().tolist()
simplex_history_file.write(",".join(map(str, output_array)) +
"\n")
simplex_history_file.flush()
print("spx: %s" % (str(spx)))
x_o = np.mean(spx[:-1], 0).astype(int)
x_r = (x_o + alpha * (x_o - spx[-1])).astype(int)
if (fun(x_r) < fun(spx[-2])) and (fun(x_r) >= fun(spx[0])):
print("Reflecting.")
spx[-1] = x_r
elif fun(x_r) < fun(spx[0]):
x_e = (x_o + gamma * (x_o - spx[-1])).astype(int)
if fun(x_e) < fun(x_r):
print("Expanding.")
spx[-1] = x_e
else:
print("Reflecting.")
spx[-1] = x_r
else:
x_c = (x_o + rho * (x_o - spx[-1])).astype(int)
if fun(x_c) < fun(spx[-1]):
print("Contracting.")
spx[-1] = x_c
else:
for i in range(1, 4):
spx[i] = (spx[0] + sigma *
(spx[i] - spx[0])).astype(int)
if finished:
spx = np.array(sorted(spx, key=fun))
for i in range(3):
set_motors(7 - cw_q, *spx[0])
print("Done with spinning %s!" % ("cw" if cw_q else "ccw"))
settings_history_file.close()
simplex_history_file.close()
return cw_q
except KeyboardInterrupt:
print("Calibration interrupted by user.")
settings_history_file.close()
simplex_history_file.close()
def spin_for_safe_straight(self, direction):
pos = self.get_rr_pos()
i = 1
while pos[0] >= self.x_boundaries[i]:
i += 1
temp_x = pos[0] - self.x_boundaries[i - 1]
x_bound = self.x_boundaries[i] - self.x_boundaries[i - 1]
j = 1
while pos[1] >= self.y_boundaries[j]:
j += 1
temp_y = pos[1] - self.y_boundaries[j - 1]
y_bound = self.y_boundaries[j] - self.y_boundaries[j - 1]
if (temp_x > (x_bound / 3)) and (temp_x < (
(2 * x_bound) / 3)) and (temp_y >
(y_bound / 3)) and (temp_y <
((2 * y_bound) / 3)):
print("We're basically in the middle. Should be fine.")
return
if temp_x < (x_bound / 2):
if temp_y < (y_bound / 2): #bottom left quadrant of our square
desired_orientationInit = -45
else: #top left quadrant of our square
desired_orientationInit = -135
else:
if temp_y < (y_bound / 2): #bottom right quadrant of our square
desired_orientationInit = 45
else: #top right quadrant of our square
desired_orientationInit = 135
desired_orientation = desired_orientationInit + direction * 60
desired_orientation = np.mod(desired_orientation + 180, 360) - 180
print(
"direction: %d, temp_pos: (%f, %f), Desired Orientation: %f, Desired orientation, adjusted: %f"
% (direction, temp_x, temp_y, desired_orientationInit,
desired_orientation))
while (True):
last_orient = self.get_rr_orient()
delta_orient = np.mod(desired_orientation - last_orient + 180,
360) - 180
if delta_orient > 0:
move_steps(7, 2000)
else:
move_steps(6, 2000)
count = 0
while count < 200: #timeout of ~2 seconds of no movement.
orient = self.get_rr_orient()
#print("Orient: %f"%(orient))
if abs(orient - last_orient) > 0.5:
count = 0
self.rr.WaitImage(10)
orient = np.mod(orient + 180, 360) - 180
if abs(desired_orientation - orient) < 10:
print("Spin complete.")
return
last_orient = orient
count += 1
print("Droplet not moving? Trying again.")
def test_straight_settings(self, x, direction, output_stream):
mot_vals = get_motor_vals_for_dir(x, direction)
try:
return self.straight_settings_history[direction][str(mot_vals)]
except KeyError:
'''We haven't done that one before.'''
set_motors(direction, *mot_vals)
try:
self.spin_for_safe_straight(direction)
(pos_list, orient_list,
num_good_points) = self.get_position_data_batch(
direction, self.data_points_for_straighten)
except MyException:
return
if num_good_points < 0.8 * self.data_points_for_straighten:
print("Not enough good data.")
return self.test_straight_settings(mot_vals, direction,
output_stream)
(center, radius, residual, sign) = maths.lsq(pos_list, orient_list)
distance_traveled = np.linalg.norm(pos_list[-1] - pos_list[0])
travel_dir = maths.get_travel_dir(pos_list[0], pos_list[-1],
orient_list[0],
self.expected_travel_dirs[direction])
self.straight_settings_history[direction][str(mot_vals)] = (
radius,
travel_dir,
distance_traveled,
)
#print("settings_history%s = %f"%(str(motor_values), radius))
#print("settings_history: %s"%(str(self.settings_history)))
output_stream.write("%d, %d, %d, %f, %f, %f\n" %
(mot_vals[0], mot_vals[1], mot_vals[2], radius,
sign, distance_traveled))
output_stream.flush()
return self.test_straight_settings(mot_vals, direction, output_stream)
def calibrate_droplet_straight(self, direction, fName=None):
alpha = 1. #reflection coefficient
gamma = 2. #expansion coefficient
rho = -0.5 #contraction coefficient
sigma = 0.5 #shrink coefficient
x_0 = np.array([0, 0])
x_1 = np.array([100, -100])
x_2 = np.array([-100, 100])
spx = np.array([x_0, x_1, x_2])
old_spx = np.zeros((3, 2))
if fName is None:
settings_history_fName = 'dmc_data_%s.csv' % ("cw"
if cw_q else "ccw")
simplex_history_fName = 'dmc_data_%s.csv' % ("cw"
if cw_q else "ccw")
else:
settings_history_fName = fName + "_%s_hist.csv" % (direction)
simplex_history_fName = fName + "_%s_spx.csv" % (direction)
settings_history_file = open(settings_history_fName, 'w')
settings_history_file.write(
'mot0set, mot1set, mot2set, radius, sign, distance_traveled\n')
simplex_history_file = open(simplex_history_fName, 'w')
simplex_history_file.write(
'spx00, spx01, spx02, rad0, spx10, spx11, spx12, rad1, spx20, spx21, spx22, rad2, spx30, spx31, spx32, rad3\n'
)
finished = False
def fun(x):
(radius, travel_dir, dist_traveled) = self.test_straight_settings(
x, direction, settings_history_file)
return -radius - travel_dir * dist_traveled
try:
while (True):
spx = np.array(sorted(spx, key=fun))
if str(spx) == str(old_spx):
finished = True
old_spx = copy.deepcopy(spx)
func_values = [fun(point) for point in spx]
output_array = np.array(
map(lambda spx_point, radius: np.append(spx_point, radius),
spx, func_values)).flatten().tolist()
simplex_history_file.write(",".join(map(str, output_array)) +
"\n")
simplex_history_file.flush()
print("spx: %s" % (str(spx)))
x_o = np.mean(spx[:-1], 0).astype(int)
x_r = (x_o + alpha * (x_o - spx[-1])).astype(int)
if (fun(x_r) < fun(spx[-2])) and (fun(x_r) >= fun(spx[0])):
print("Reflecting.")
spx[-1] = x_r
elif fun(x_r) < fun(spx[0]):
x_e = (x_o + gamma * (x_o - spx[-1])).astype(int)
if fun(x_e) < fun(x_r):
print("Expanding.")
spx[-1] = x_e
else:
print("Reflecting.")
spx[-1] = x_r
else:
x_c = (x_o + rho * (x_o - spx[-1])).astype(int)
if fun(x_c) < fun(spx[-1]):
print("Contracting.")
spx[-1] = x_c
else:
for i in range(1, 3):
spx[i] = (spx[0] + sigma *
(spx[i] - spx[0])).astype(int)
if finished:
set_motors(i, *spx[0])
print("We're done straightening direction %d" % direction)
settings_history_file.close()
simplex_history_file.close()
return cw_q
except KeyboardInterrupt:
print("Calibration interrupted by user.")
settings_history_file.close()
simplex_history_file.close()
serial.cleanup()
def calibrate_degrees_per_step(self,
cw_q,
num_steps=50,
num_runs=5,
fName=None):
"""
Calibrates the number of degrees per kilostep of droplet motion rotation
"""
orient_buf = np.array([0] * 100)
rot_angle = np.array([0] * num_runs)
if fName is None:
fName = 'data\\dmc_data_deg_per_kilostep.csv'
else:
fName = fName + "_deg_per_kilostep.csv"
try:
fh = open(fName, 'w')
for r in range(num_runs):
start_orient = self.get_rr_orient()
move_steps(7 - cw_q, num_steps)
while (True):
for i in range(100):
orient_buf[i] = self.get_rr_orient()
self.rr.WaitImage(10)
if (abs(orient_buf[-1] - orient_buf[0]) < 0.01):
#print("Breaking, orient_buf: %s"%orient_buf)
print("Breaking.")
time.sleep(2)
#This condition is firing prematurely.
break
stop_orient = self.get_rr_orient()
rot_angle[r] = stop_orient - start_orient
if (cw_q):
rot_angle[r] = rot_angle[r] * -1
if (rot_angle[r] < 0):
rot_angle[r] += 360
print("[Run %d] Rotation Angle: %d (deg)\n" %
(r, rot_angle[r]))
fh.write("%d, %d\n" % (r, rot_angle[r]))
deg_per_kilostep = int(np.mean(rot_angle) * 1000. / num_steps)
print("Degrees per kilostep: %d\n" % deg_per_kilostep)
fh.write("%d\n" % deg_per_kilostep)
fh.close()
except KeyboardInterrupt:
print("Calibration interrupted by user.")
stop_walk()
fh.close()
def calibrate_dist_per_step(self, direction, num_steps=100, fName=None):
"""
Calibrates the number of degrees per kilostep of droplet motion rotation
"""
pos_buf = np.zeros((100, 2))
if fName is None:
fName = 'data\\dmc_data_deg_per_kilostep.csv'
else:
fName = fName + "_deg_per_kilostep.csv"
try:
start_pos = np.array(self.get_rr_pos())
move_steps(direction, num_steps)
while (True):
for i in range(100):
pos_buf[i] = np.array(self.get_rr_pos())
self.rr.WaitImage(10)
if np.linalg.norm(pos_buf[0] - pos_buf[-1]) < 1:
break
stop_pos = np.array(self.get_rr_pos())
dist = np.linalg.norm(start_pos - stop_pos)
mm_per_kilostep = int(dist / .69 * 1000. / num_steps)
print("dist: %f, mm per kilostep: %d\n" % (dist, mm_per_kilostep))
except KeyboardInterrupt:
print("Calibration interrupted by user.")
stop_walk()
def __del__(self):
serial.cleanup()
self.rr.close()
print("Finished cleaning up myself.")