Difference between revisions of "Team:Aachen/Notebook/Construction Manuals/Circuit"

 
Line 51: Line 51:
 
All files to print the circuit can be found here [https://static.igem.org/mediawiki/2015/4/43/Aachen_MainCircuit.zip Aachen_MainCircuitzip]
 
All files to print the circuit can be found here [https://static.igem.org/mediawiki/2015/4/43/Aachen_MainCircuit.zip Aachen_MainCircuitzip]
  
=References=
 
 
<references/>
 
<references/>
  
 
{{Team:Aachen/Footer|color=yellow}}
 
{{Team:Aachen/Footer|color=yellow}}

Latest revision as of 09:10, 11 October 2015

The circuit built is an integrated platform for each component of the bioreactor. We develop a board with female header pins that allow the user to plug in an Arduino, three stepper drivers and other required components onto the circuit. This was done mainly to incorporate the idea of re-usability. If you burn or short circuit one of the electrical components and it gets destroyed then you can plug it out and use a new component in the circuit rather than discarding the whole board. The circuit receives power from two different sources - 5 volts from the arduino and 12 volts from an external source. The communication of the circuit board to the software is done via Serial Communication through USB port of the microcontroller.

Specifications :

  • Board Length - 100 mm
  • Board Breadth - 80 mm


Schematic

Aachen MainCircuit sch.JPG
Bioreactor Circuit
Schematics of the bioreactor circuit showing all devices connected with the arduino

Circuit Protocols

We use a definite set of ports of the arduino for each one of our devices.

Arduino Pins Protocol

Pins PWM Name Device
D2 No F_Enable Feed Pump
D4 No Valve Transister Valve
D3 Yes OD Transister OD
D6 Yes Stirer Transister DC Motor
D7 No A_Enable Aeration Pump
D9 Yes A_Step Aeration Pump
D10 Yes H_Step Harvest Pump
D11 Yes H_Enable Harvest Pump
D12 No Direction All Pumps
D13 No A_Step Aeration Pump

Power Supply

The Arduino is powered using the computer. There always remains a possibility to use the Vin ports to switch the circuit ON without the USB but using the power supply board. The Pumps use a power supply of 12V supplied by a switching adapter (Model Number : HNP24-120) Input : 100-240 VAC, 50/60 Hz 0.8 A Output : 12 Volts, 2000 mA

Files

All files to print the circuit can be found here Aachen_MainCircuitzip