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We recommend getting the latest python code from github. For convenience the latest master release is available directly through this link
Requirements:
- Windows/Mac/Linux PC (including the raspberry pi 35$ linux computer). Memory and speed don't matter very much as long as the computer isn't multitasking.
- Serial port or USB to serial converter, preferably based on FTDI's FT232 chipset, as the prolific parts are flaky.
- Python 2.7 (note: The pythonxy distribution contains all necessary packages)
STARTUP PROCEDURE
- Make sure the system is properly assembled, powered on, and primed.
- Check config.ini. Most of the defaults should be good (example below), but make sure the port settings are correct.
[controller]
;don't inclued the .py
controlfun: turbidostatController
kp: 3.0
ki: 0.05
; space seperated list of setpoints
setpoint: 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
altsetpoint: 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
odperiod: 4
maxdilution: 160.0
mindilution: 7.0
period: 60
baudRate: 19200
[log]
odlog: odlog.dat
fulllog: log.dat
errorlog: errors.log
blanklog: blanklog.dat
[ports]
controllerPort: COM1
; use NONE for cheapostat
pumpPort: NONE
network:3399
[pump]
;don't include the .py
pumpdriver: cheapopumpdriver
baudRate: 19200
syringeDiameter: 7.290
volumeUnits: UL
syringeRate: 1800
syringRateUnit: UM
- Delete any old data and log files (
odlog.dat, log.dat, errors.log, and blank.dat)
- When
blank.dat is missing the software will use the first sample to blank (taken 60 seconds after starting) and write blank.dat. After this point blank.dat will be reloaded every time the software starts (or restarts).
- Double click (or start from the command line) servostat.py. The system will now blank and run with the included plugins.
- The program will print out time followed by numbers representing the OD. First 8 numbers are OD, next 8 are controller state, and the last 8 numbers are dilution rates.
- Program will blank after 60 seconds if not already blanked from previous run
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