Electronics stripboard component placement optimisation using NetworkX and Google OR-Tools CP-SAT .
Install from the GitHub repository:
git clone git@github.com:dpohanlon/wadjet.git
cd wadjet
pip install .Define components to be placed
bjt = BJT(name="Q1", bjt_type="NPN")
R1 = Resistor(name="R1")
R2 = Resistor(name="R2")
Re = Resistor(name="Re")
Rc = Resistor(name="Rc")
Ce = Capacitor(name="Ce", electrolytic=True)
Cin = Capacitor(name="Cin", electrolytic=True)
Cout = Capacitor(name="Cout", electrolytic=True)
Vcc = PowerSupply(name="Vcc", voltage_level="5V")
GND = PowerSupply(name="GND", voltage_level="GND")
component_list = [bjt, R1, R2, Re, Rc, Ce, Cin, Cout, Vcc, GND]Specify the connections between the component legs according to a schematic
connections = {
# Power and ground
"Vcc": ["Rc_in", "R1_in"],
"GND": ["Re_out", "R2_out", "Cin_anode", "Cout_anode"],
# Biasing the transistor base using R1 and R2
"R1_out": ["base_junction"],
"R2_in": ["base_junction"],
"base_junction": ["Q1_base", "Cin_cathode"],
# Emitter resistor and capacitor
"Q1_emitter": ["Re_in", "Ce_cathode"],
"Ce_anode": ["GND"],
# Collector resistor and output
"Q1_collector": ["Rc_out", "Cout_cathode"],
# Note: Input signal would be fed into Cin and output taken from Cout
}Optimise the placement for minimal path length, and produce a diagram for soldering
board = generateBoard(component_list, connections)