Updated to 0.0.4 and it works. Thanks again!

Hi Will,

Thanks for the tip. For now I'm going to manually disconnect CTR from my sensor.

I did run into a minor problem where the commands aren't recognized by the device. I'll try to refresh the device with newer firmware.

OSError: command, getRefVolt, not found, {'success': False, 'message': 'command, getRefVolt, not found', 'response': {}}

Brad

Looking at the example file get_ref_volt.py, I believe it is relatively easy to create a test to measure the potential between two electrodes. Unfortunately, the firmware itself doesn't support open circuit ("floating") potentials; the working-reference (output) potential is set to 0V at initialization.

Will there be issues if I remove the setVolt(..) commands defined in these methods?

• SystemState::initialize()
• AnalogSubsystem::initialize()

To evaluate the changes, I plan to run a simple python script like this:
port = '/dev/ttyACM0'
sample_period = 5
dev = Potentiostat(port)
t_start = time.time()
while True:
ref_volt = dev.get_ref_volt()
t_current = time.time()
print('%05.0f,%04.2f' % (t_current - t_start, ref_volt))
time.sleep(sample_period)

Any thoughts?