Arduino-based device to control 24V relays as well as Bronkhorst IQFlow+ mass flow controllers.
A host PC can send the controller commands through a USB connection or the controller can be operated standalone with 2 analog signals or 2 potentiometers.
BNC 0 controls the five relays. 0.25V : no relays on 0.75V : relay 0 on 1.25V : relay 1 on 1.75V : relay 2 on 2.25V : relay 3 on 2.75V : relay 4 on 3.25V : relay 5 on 3.75V : relay 6 on 4.25V : relay 7 on
BNC 1 controls the mfc 0 flow rate setting. The flow rate is set as a percentage of the total mfc capacity. If the mfc is rated as 1000 sccm, 20% capacity is 200 sccm. % capacity = (voltage/5)*100 e.g. 0V : 0% 0.1V : 2% 1V : 20% 2V : 40% 3V : 60% 4V : 80% 5V : 100%
Contains the Arduino firmware files. See firmware/README.rst
Contains the code for controlling with a host computer.
See host/python/README.rst
Contains the pcb Kicad and gerber files.
Author: Peter Polidoro
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.