Algodoo

The neurons are as such, from left to right:
Top layer: position, velocity
Mid layer: proportional, derivative, integral (adjust the _weight variables in the lasers on these neurons to change the way the box returns to target)
Final layer: motor output

Above the neural network is the environment on which the neural net operates. It is a box that can move horizontally, but it will try to stay at [0, 0].
The circle above it represents the force the thrusters apply to the box.
To the left of the net is an interactive legend for neuron types in this scene.
WS to stimulate legend neurons
AD to push the box around

thaks bai x 229380