The Lawsin Linkage, sometimes called the Bowtie Truss, is a double cantilever truss system with connecting elements (links) forming triangular frames. The structure, which forms like a bow-tie or a double inverted king posts, was developed by Joey Lawsin in 1988 to simulate the walking cadence of his biotronics animals. The linkage was designed to meet the following criteria:
1. It must carry out a walking cadence fluidly like an actual living animal's gait.
2. It can conquer any type of terrain obstacles from carpet floors to seabeds.
3. It can move in different directions with various range of actuated motion or R.O.A.M.
4. Its structure elements must be guided by natural mathematics, eg. geometry.
5. It can be integrated with the arduino platform for virtual consciousness programming.
The linkage is consisted of two equilateral triangles that are connected in a
common pivot axis known a pin joint. This type of triangular structures, aside from the isosceles and scalene, are commonly used in bridges, trusses, airfoils, beams, and other frame structures that provide stability, strength, material efficiency, and evenly distribution of
forces.
Mathematically, the Lawsin Links can be
easily computed using basic trigonometry (SOH-CAH-TOA.) and basic mechanics (strength of
materials). The comprehensive details of his computations
will not be discussed here but rather pictures of the basic Bowtie Biomechanical Walker Mechanism will be presented instead.
How to blink an LED using Raspberry Pi and the Python Software? 1. Gather all electronics materials and make the led-resistor circuit first. Connection: Pin 18 > Led > Resistor > Ground. 2. Open the Raspbian icon menu, select programming and choose Python Idle 3. Once python is open, click File > New File 4. Copy and paste the code (to turn on/off led): import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) GPIO.setup(18,GPIO.OUT) #print "Led ON" GPIO.output(18,GPIO.HIGH) time.sleep(10) #print "Led OFF" GPIO.output(18,GPIO.LOW) 5. OR, copy and paste this code (to blink the led): import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) GPIO.setup(18,GPIO.OUT) while True: GPIO.output(18, True) # Turn on pin 18 time.sleep(1) # Delay GPIO.output(18, False) ...
This is a Lego robot with a geared Stepper Motor 28BYJ-48 5V with ULN2003 driver board which is controlled by a television remote control. /* Stepper Motor controlled by arduino and tv remote controller This sketch controls a geared stepper motor wirelessly using tv remote control The motor will revolve one revolution forward when left arrow is pressed. The motor will revolve one revolution backward when right arrow is pressed. The motor is attached to digital pins 8 - 11. An indicator red led is attached to pin 13. An indicator blue led is attached to pin 7. An infrared receiver (IR) is attached on pin 6. */ #include <IRremote.h> #include <Stepper.h> int Pin0 = 8; int Pin1 = 9; int Pin2 = 10; int Pin3 = 11; int IR_PIN = 6; int redLed = 13; int bluLed = 7; int i=0; int m=4;...
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