Is a force(tension force to be exact) that makes a body follow a curved path with a center. The force’s direction is always to the instantaneous center of the path and orthogonal to the motion of the body. The body’s acceleration can be calculated as: a= v^2/r (where v squaredContinue Reading
Environment variables is of the best ways to differentiate/decouple between react and it’s server side dependency. In order to do so let’s take webpack as an example and download dotenv for webpack with npm or yarn: yarn add –dev dotenv webpack-dotenv or npm install dotenv webpack-dotenv –save Add the following codeContinue Reading
Unbalanced forces create acceleration in the direction of the Net force. Fy = my” Which is the translational acceleration in the y direction Unbalanced moments create acceleration in the direction of the Net moment/torque around a given axis, where α is the angular acceleration(rad/sec*sec),I – moment of Inertia(3X3). τ =Continue Reading
When a rotor spins it produces thrust(F) and also induces moment(M)(torque) both are measured by radians/sec with omega(ω). The moment induced is in the counter direction(A.K.A yaw – which is rotation around the Z value) when ω is 2*PI the rotor is doing 1 full rotation per second. The formulasContinue Reading
Potential field (represented by a number or tensor, that has a value for each point in space-time) combines attraction to the goal, and repulsion from obstacles in order to plan a path for an autonomous system. most commonly used attractive potential function is: where, ε is a positive scaling factor, p(q, qgoal)Continue Reading
RRT is a searching algorithm applied by building a space filling tree from samples drawn randomly of high-dimensional search spaces . import networkx as nx import numpy as np from sklearn.neighbors import KDTree class RRT: def __init__(self,x_init): self.tree = nx.DiGraph() self.tree.add_node(x_init) def nearest_neighbour(x_rand,rrr): dist=1000 x_rand = np.array(x_rand) for node inContinue Reading
Billing Alerts – Amazon does not allow you to put a limit on how much you pay so CloudWatch is the way to get alerts. MFA/2FA – security is crucial so you should be using 2 securities: such as password and hardware/software tokens. Team Security – Each person should haveContinue Reading
Four possible perspectives(ways) to produce matrix multiplications(which give the same result): Ordered Collection of Dot Products (result matrix is built elementwise): Left matrix is rows, right matrix is columns. Each element is the dot product of a corresponding row from the left matrix and the column from the right matrix.Continue Reading