docs: add wind_farm

entities/wind_farm/scripts/plotRegulationSlave.m

+%% Regulation Slave
+% LT3081 as a Current Source
+% AD8400ARZ1 for current regulation
+
+Iset = 50e-6;
+Rout = 0.5;
+
+Rw  = 50;
+Rwb = @(D,Rab)(D./256.*Rab+Rw);
+Rwa = @(D,Rab)((256-D)./256.*Rab+Rw);
+i = @(D,Rab)(Rwb(D,Rab)*Iset/Rout);
+
+D = 0:256;
+Rab = [8e3;10e3;12e3];
+plot(D,i(D,Rab))
+title('Current Regulation')
+xlim([0 256])
+xlabel('Code')
+ylabel('Current (A)')
+legend('Rab = 8k','Rab = 10k','Rab = 12k','Location','Southeast')
\ No newline at end of file

entities/wind_farm/wind_farm.md

+# Wind Farm
+The Wind Farm is a power producer from renewable energy, which converts the wind to electrical energy. It injects current in the grid using a current source configuration, able to erogate up to 1 A. The wind speed can be changed using the touch slider, the LED indicators and the wind turbine speed will change accordingly. The circuitry includes a power generation sub-block, a telemetry sub-block for monitoring the power production in the 3.3 V bus and a sub-block for the visulization of the current output load.
+
+## Schematic
+[<img src="docs/wind_farm_sch.png"  width="1023" height="500">](docs/wind_farm_sch-main.png)
+
+[<img src="docs/wind_farm_sch-sub_connectors.png"  width="145" height="100">](docs/wind_farm_sch-sub_connectors.png)
+&nbsp;
+[<img src="docs/wind_farm_sch-sub_power_slave.png"  width="145" height="100">](docs/wind_farm_sch-sub_power_slave.png)
+&nbsp;
+[<img src="docs/wind_farm_sch-sub_power_auto.png"  width="145" height="100">](docs/wind_farm_sch-sub_power_auto.png)
+&nbsp;
+[<img src="docs/wind_farm_sch-sub_indicator.png"  width="145" height="100">](docs/wind_farm_sch-sub_indicator.png)
+&nbsp;
+[<img src="docs/wind_farm_sch-sub_telemetry.png"  width="145" height="100">](docs/wind_farm_sch-sub_telemetry.png)
+&nbsp;
+[<img src="docs/wind_farm_sch-sub_mechanical.png"  width="145" height="100">](docs/wind_farm_sch-sub_mechanical.png)
+
+## Printed Circuit Board
+
+[<img src="docs/wind_farm_pcb.png"  width="531" height="500">](docs/wind_farm_pcb-brd.png)
+
+[<img src="docs/wind_farm_pcb-F_Cu.png"  width="145" height="100">](docs/wind_farm_pcb-F_Cu.png)
+&nbsp;
+[<img src="docs/wind_farm_pcb-In1_Cu.png"  width="145" height="100">](docs/wind_farm_pcb-In1_Cu.png)
+&nbsp;
+[<img src="docs/wind_farm_pcb-In2_Cu.png"  width="145" height="100">](docs/wind_farm_pcb-In2_Cu.png)
+&nbsp;
+[<img src="docs/wind_farm_pcb-B_Cu.png"  width="145" height="100">](docs/wind_farm_pcb-B_Cu.png)
+
+## Media
+
+[<img src="docs/wind_farm_3d-top.png"  width="100" height="100">](docs/wind_farm_3d-top.png)
+&nbsp;
+[<img src="docs/wind_farm_3d-bottom.png"  width="100" height="100">](docs/wind_farm_3d-bottom.png)
+&nbsp;
+[<img src="docs/wind_farm_brd.png"  width="151" height="100">](docs/wind_farm_brd.png)
+
+## Related Links
+
+* [Concept](https://git.rwth-aachen.de/acs/public/teaching/legos/concept/-/blob/master/application/wind_farm/wind_farm.md)
+* [Software]() 
+* [Assembly]()

entities/wind_farm/wind_farm.sch

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