P2P (Bilateral) Communication Between Nodemcu Esp8266 Boards Using Arduino Ide

2020 ◽  
Vol 65 (1-2) ◽  
pp. 69-86
Author(s):  
M. Todica ◽  
Keyword(s):  
Real Time ◽  
Dc Motors

"Bilateral communication between the boards NodeMcu ESP826 is achieved using the WI FI capabilities of these devices and particularly code based on Arduino IDE. The system is used to control servos, DC motors or led. The duplex communication allows feedback action between sender and receiver. Real time feedback is obtained by particularly connection of the servo to the board. Keywords: Bilateral communication, NodeMcu ESP8266, Arduino. "

Stair Climbing of a Track-Driven Mobile Robot with Flipper Arm

2013 ◽  
Vol 393 ◽  
pp. 586-591
Author(s):  
Khairul Azmi Mahadhir ◽  
Cheng Yee Low ◽  
Hizzul Hamli ◽  
Ahmed Jaffar ◽  
Elwan Salleh ◽  
...  
Keyword(s):  
Mobile Robot ◽  
Mobile Robots ◽  
Real Time ◽  
Pid Controller ◽  
Closed Loop ◽  
Stair Climbing ◽  
Matlab Simulink ◽  
Dc Motors

On both natural and manmade terrains, the maneuverability of mobile robots has been improving. Nevertheless, stair climbing remains a challenging functionality for mobile robots. In this paper, a step-by-step stair climbing approach is proposed for a track-driven mobile robot equipped with flipper arms. The flipper arms are actuated by DC motors controlled by PID controller. Potentiometers and rotary encoders are used to provide closed loop feedbacks. Executable codes are generated using Real-Time Workshop of MATLAB/Simulink. The reference angles to be followed by the flipper arm in stair climbing are emulated and verified by real time experiments.

scholarly journals Laser Based Real Time Antenna Pointing Measurement System

2018 ◽  
Vol 7 (3.12) ◽  
pp. 28
Author(s):  
Anish Kumar ◽  
Thangadurai N
Keyword(s):  
Laser Beam ◽  
Real Time ◽  
Measurement System ◽  
Design Verification ◽  
Graphical Interface ◽  
Pointing Error ◽  
Dc Motors ◽  
Radiated Emission

The antenna pointing system is very important to obtain an optimum received signal level. To achieve it, presenting the implication of laser beam radiated emission requirements and how they state for pointing measurement system, its impact on design, verification and testing for the antenna pointing system. The antenna pointing system is developed by using array of linear light sensors, crosshair laser weapon, where the light sensors are mounted on the board and laser weapon putted on the antenna mechanism. On the rotator system, composed by using 2 gears and 2 DC motors with customized frames. For collecting the sensors data using ProASIC3 FPGA fabric and finding the numbers and which sensors has been active during the emitting period and 32-bit ARM Cortex-M3 processor take account into the pointing measurement system to computing the pointing and pointing error. At the end, the final step is building a User Graphical Interface on PC to show the output of the antenna pointing.   

Design and Analysis of an Omni-Directional Mobile Robot with Orthogonal Wheel

2011 ◽  
Vol 88-89 ◽  
pp. 60-64
Author(s):  
Wei Hua Zhou ◽  
Ji Feng Guo ◽  
Guan Shuai Jia ◽  
Han Liu
Keyword(s):  
Mobile Robot ◽  
Real Time ◽  
Host Computer ◽  
Current Position ◽  
Brushless Dc Motors ◽  
Brushless Dc ◽  
Design And Implementation ◽  
Dc Motors ◽  
Directional Movement

This study presents the processes undertaken in the design and implementation of an omni-directional mobile robot using orthogonal wheels. The orthogonal wheel developed consists of ten rollers, achieves not only forward, reverse, left slide, right slide, but also rotation in situ. The mobile robot consists of four orthogonal wheels which independently powered by brushless DC motors. A DC industrial motherboard is adopted in the main controller, which constitutes a NMT network with the communication ports of four motor drivers by an extended CAN card. In the NMT network, the host computer is the CAN node master, and each motor driver is the CAN node slave. The host computer controls each motor’s movement, and reads the motor’s current, position and speed information through the NMT network in real-time. The experiment shows that the mobile robot can achieve omni-directional movement.

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Video real-time imaging of artificial membranes during freeze-drying by cryo-electron microscopy

1988 ◽  
Vol 46 ◽  
pp. 16-17
Author(s):  
Alan S. Rudolph ◽  
Ronald R. Price
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Freeze Drying ◽  
Video Capture ◽  
Drying Process ◽  
Artificial Membranes ◽  
The Past ◽  
Cryo Electron Microscopy ◽  
Spherical Structures ◽  
Capture Techniques

We have employed cryoelectron microscopy to visualize events that occur during the freeze-drying of artificial membranes by employing real time video capture techniques. Artificial membranes or liposomes which are spherical structures within internal aqueous space are stabilized by water which provides the driving force for spontaneous self-assembly of these structures. Previous assays of damage to these structures which are induced by freeze drying reveal that the two principal deleterious events that occur are 1) fusion of liposomes and 2) leakage of contents trapped within the liposome [1]. In the past the only way to access these events was to examine the liposomes following the dehydration event. This technique allows the event to be monitored in real time as the liposomes destabilize and as water is sublimed at cryo temperatures in the vacuum of the microscope. The method by which liposomes are compromised by freeze-drying are largely unknown. This technique has shown that cryo-protectants such as glycerol and carbohydrates are able to maintain liposomal structure throughout the drying process.

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

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