def test_mode_pump():
p_volume = interfaces.read_user_value("Volume: ")
while True:
p_direction = interfaces.read_user_value("Direction (0/1):")
if p_direction == 0 or p_direction == 1:
interfaces.lcd_clear()
interfaces.pump_volume(float(p_volume), int(p_direction))
break
def _calibrate_temperature():
"""Routine for calibrating the temperature probe."""
expected_temperature = interfaces.read_user_value(
"Ref solution temperature?")
interfaces.lcd_out("Put probe in sol",
style=constants.LCD_CENT_JUST,
line=1)
interfaces.lcd_out("", line=2)
interfaces.lcd_out("Press 1 to", style=constants.LCD_CENT_JUST, line=3)
interfaces.lcd_out("record value", style=constants.LCD_CENT_JUST, line=4)
# Waits for user to press enter
interfaces.read_user_input()
expected_resistance = analysis.calculate_expected_resistance(
expected_temperature)
actual_temperature, actual_resistance = interfaces.read_temperature()
interfaces.lcd_clear()
interfaces.lcd_out(
"Recorded temperature: {0:0.3f}".format(actual_temperature), line=1)
diff = expected_resistance - actual_resistance
new_ref_resistance = (
constants.TEMPERATURE_REF_RESISTANCE +
diff * constants.TEMPERATURE_REF_RESISTANCE / expected_resistance)
constants.TEMPERATURE_REF_RESISTANCE = float(new_ref_resistance)
# reinitialize sensors with calibrated values
interfaces.lcd_out("{}".format(new_ref_resistance), line=2)
interfaces.setup_interfaces()
def _calibrate_pH():
"""Routine for calibrating pH sensor."""
# get first buffer pH
buffer1_actual_pH = interfaces.read_user_value("Enter buffer pH:")
interfaces.lcd_out("Put sensor in buffer",
style=constants.LCD_CENT_JUST,
line=1)
interfaces.lcd_out("", line=2)
interfaces.lcd_out("Press 1 to", style=constants.LCD_CENT_JUST, line=3)
interfaces.lcd_out("record value", style=constants.LCD_CENT_JUST, line=4)
# Waits for user to press enter
interfaces.read_user_input()
buffer1_measured_volts = float(interfaces.read_raw_pH())
interfaces.lcd_clear()
interfaces.lcd_out("Recorded pH and volts:", line=1)
interfaces.lcd_out(
"{0:>2.5f} pH, {1:>3.4f} V".format(buffer1_actual_pH,
buffer1_measured_volts),
line=2,
)
interfaces.lcd_out("Press any button",
style=constants.LCD_CENT_JUST,
line=3)
interfaces.lcd_out("to continue", style=constants.LCD_CENT_JUST, line=4)
interfaces.read_user_input()
# set calibration constants
constants.PH_REF_VOLTAGE = buffer1_measured_volts
constants.PH_REF_PH = buffer1_actual_pH
def edit_settings():
"""Resets calibration constants to default"""
interfaces.lcd_out("Reset calibration", line=1)
interfaces.lcd_out("settings to default?", line=2)
interfaces.lcd_out("1: Yes", line=3)
interfaces.lcd_out("2: No", line=4)
selection = interfaces.read_user_input()
if selection != "n" or selection != "N":
analysis.reset_calibration()
analysis.save_calibration_data()
interfaces.lcd_clear()
interfaces.lcd_out("Default constants restored", 1)
interfaces.lcd_out("Press any to cont.", 3)
interfaces.read_user_input()
interfaces.lcd_out("Set volume in pump? (Y/n)", 1)
selection = interfaces.read_user_input()
if selection != "n" or selection != "N":
vol_in_pump = interfaces.read_user_value("Volume in pump: ")
constants.volume_in_pump = vol_in_pump
analysis.save_calibration_data()
interfaces.lcd_out("Volume in pump set", 1)
interfaces.lcd_out("Press any to cont.", 3)
interfaces.read_user_input()
def total_alkalinity_titration():
"""Runs through the full titration routine to find total alkalinity"""
# pull in 1 ml of solution into pump for use in titration
if constants.volume_in_pump < 1.0:
p_volume = 1.0 - constants.volume_in_pump
interfaces.pump_volume(float(p_volume), 0)
# data object to hold recorded data
data = [(
"temperature",
"pH V",
"solution volume",
"weight",
"salinity",
"Buffer pH",
"Buffer pH V",
)]
# query user for initial solution weight
initial_weight = interfaces.read_user_value("Sol. weight (g):")
salinity = interfaces.read_user_value("Sol. salinity (ppt):")
buffer_ph = constants.PH_REF_PH
buffer_v = constants.PH_REF_VOLTAGE
interfaces.lcd_clear()
interfaces.lcd_out("Calibrate pH probe?", line=1)
interfaces.lcd_out("Yes: 1", line=2)
interfaces.lcd_out("No (use old): 0", line=3)
interfaces.lcd_out("{0:>2.3f} pH: {1:>2.4f} V".format(buffer_ph, buffer_v),
line=4)
selection = interfaces.read_user_input()
if selection == constants.KEY_1:
_calibrate_pH()
data.append(
(None, None, None, initial_weight, salinity, buffer_ph, buffer_v))
# while not initial_weight.replace('.', '').isdigit():
# interfaces.lcd_out("Please enter a numeric value.", console=True)
# initial_weight = interfaces.read_user_input()
# initial titration (bring solution close to 3.5)
# todo set stir speed slow
total_sol = 0
interfaces.lcd_out("Bring pH to 3.5:", line=1)
interfaces.lcd_out("Manual: 1", line=2)
interfaces.lcd_out("Automatic: 2", line=3)
interfaces.lcd_out("Stir speed: slow", line=4)
user_choice = interfaces.read_user_input()
# wait until solution is up to temperature
interfaces.temperature_controller.activate()
interfaces.lcd_clear()
interfaces.lcd_out("Heating to 30 C...", line=1)
interfaces.lcd_out("Please wait...", style=constants.LCD_CENT_JUST, line=3)
if user_choice == "1":
interfaces.lcd_out("MANUAL SELECTED",
style=constants.LCD_CENT_JUST,
line=4)
else:
interfaces.lcd_out("AUTO SELECTED",
style=constants.LCD_CENT_JUST,
line=4)
while not interfaces.temperature_controller.at_temperature():
interfaces.temperature_controller.update()
temperature = interfaces.temperature_controller.get_last_temperature()
interfaces.lcd_out(
"Temp: {0:>4.3f} C".format(temperature),
style=constants.LCD_CENT_JUST,
line=2,
)
if user_choice == "1":
# Manual
while user_choice == "1":
p_volume = interfaces.read_user_value("Volume: ")
interfaces.lcd_clear()
interfaces.lcd_out("Direction (0/1): ", line=1)
p_direction = interfaces.read_user_input()
p_volume = float(p_volume)
p_direction = int(p_direction)
if p_direction == 1:
total_sol += p_volume
if p_direction == 0 or p_direction == 1:
interfaces.pump_volume(p_volume, p_direction)
current_pH = wait_pH_stable(total_sol, data)
interfaces.lcd_out("Current pH: {0:>4.5f}".format(current_pH),
line=1)
interfaces.lcd_out("Continue adding solution?", line=2)
interfaces.lcd_out("(0 - No, 1 - Yes)", line=3)
interfaces.lcd_out("", line=4)
user_choice = interfaces.read_user_input()
else:
# Automatic
total_sol = titration(constants.TARGET_PH_INIT,
constants.INCREMENT_AMOUNT_INIT, data, 0, 0)
total_sol = titration(
constants.TARGET_PH_MID,
constants.INCREMENT_AMOUNT_MID,
data,
total_sol,
600,
)
# 3.5 -> 3.0
# todo set stir speed fast
interfaces.lcd_out("Stir speed: fast", line=4)
titration(constants.TARGET_PH_FINAL, constants.INCREMENT_AMOUNT_FINAL,
data, total_sol)
# save data to csv
analysis.write_titration_data(data)
interfaces.temperature_controller.deactivate()
def test_mode_set_volume():
constants.volume_in_pump = interfaces.read_user_value("Volume in pump: ")
def test_mode_set_volume():
new_volume = interfaces.read_user_value("Volume in pump: ")
interfaces.set_pump_volume(new_volume)
