What is the Command Line? - Adafruit Industries

What is the Command Line? Created by Brennen Bearnes ... Most of the time, when professional nerds need to access the command line on a remote Linux system, ...

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Create an Infrared Controlled Mouse with Arduino Micro ...

the Arduino Leonardo, Arduino Micro, and Arduino Yun. However there appeared to be some conflicts between IRLib infrared library and the Pro Trinket mouse and keyboard libraries.

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Sparky the Blue Smoke Monster Automaton

Here we'll be building a Sparky the Blue Smoke Monster robot friend! He'll be there when you put the chip in backwards, swap power and ground, or forget the decoupling cap. You might be a little crestfallen when you let the blue smoke out of your chips, but at least you have someone by your side.

  Sparky

Embedded Linux Board Comparison - Adafruit Industries

Performance To compare performance of the boards I used the nbench (https://adafru.it/doZ) benchmark tool. This is an old tool that was originally created to measure …

  Comparison

CurieBot: Arduino 101 Mini Robot Rover

Aug 22, 2018 · robot doesn't actually have to run into things to navigate. There are plenty of distance sensor options out there (there is a whole category of them (https://adafru.it/t8F) on the Adafruit shop), but the sensor I am going to use is the neat little IR sensor from from Sharp.

  Robot

Welcome to CircuitPython! - cdn-learn.adafruit.com

Nov 01, 2018 · A microcontroller board is a board with a microcontroller chip that's essentially an itty-bitty all-in-one computer. The board you're holding is a microcontroller board!

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Pixy Pet Robot - Color vision follower

Aug 22, 2018 · Overview and Materials This project pairs the super-awsome Pixy CMUCam-5 vision system with the high performance Zumo robot platform, a …

  Color, Vision, Color vision

All About Stepper Motors - Adafruit Industries

Types of Steppers There are a wide variety of stepper types, some of which require very specialized drivers. For our purposes, we will focus on stepper motors that …

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Sous-vide controller powered by Arduino - The SousViduino!

Sous vide is rapidly becoming an important cooking technique in many of the very best restaurants in the world. Sous vide combines principles of molecular gastronomy with industrial temperature controls to precisely manage the

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Install bluez on the Raspberry Pi - cdn-learn.adafruit.com

Overview This guide will walk through how to compile and install bluez (https://adafru.it/eDE) on the Raspberry Pi. Bluez is the Linux Bluetooth system and allows a Raspberry Pi to communicate with Bluetooth classic and Bluetooth low energy

Electrical Resistivity of Concrete - Giatec Scientific Inc.

resistivity measurements using two different signal frequencies (40 Hz and 1 kHz) in the uniaxial method. The use of a low- frequency signal (40 Hz) increased the measured resistivity by 9% compared to 1 kHz signal. So, in the uniaxial technique, the resistivity measurement at low frequencies (below 500 Hz)

  Measurement, Resistivity, Resistivity measurements

Understanding Soil Resistivity Testing - AEMC

Soil Resistivity Testing Soil resistivity measurements have a threefold purpose. First, data is used to make sub-surface geophysical surveys as an aid in identifying ore locations, depth to bedrock and other geological phenomena. Second, resistivity has a direct impact on the degree of corrosion in underground pipelines. A decrease in

  Measurement, Resistivity, Resistivity measurements

17. RESISTIVITY THEORY 17.1 Introduction 17.2 Basic ...

centigrade. Clearly, if the BHT is 200oC, the increase in the resistivity of the formation fluids can be as much as 800%. This will cause the resistivities measured with downhole tools to increase steadily down the borehole. To avoid this added complication all downhole resistivity measurements are

  Measurement, Resistivity, Resistivity measurements

TECHNIQUES FOR MEASURING RESISTIVITY FOR MATERIALS ...

To simplify measurements, the 4200A-SCS Parameter Analyzer comes with a project that contains tests for making resistivity measurements using a four-point collinear probe. The 4200A-SCS can be used for a wide range of material resistances including very high resistance semiconductor materials because of its high input impedance (>1016 ohms).

  Measurement, Resistivity, Resistivity measurements

RESISTIVITY OF SEMICONDUCTORS BY FOUR PROBE …

all the measurements and not the resistivity measurements only. FOUR PROBE METHOD Many conventional methods for measuring resistivity are unsatisfactory for semiconductors because metal-semiconductor contacts are usually rectifying in nature. Also there is generally minority carrier injection by one of the current carrying contacts.

  Measurement, Resistivity, Resistivity measurements

Surface Resistivity and Surface Resistance Measurements

Surface Resistivity and Surface Resistance Measurements Using a Concentric Ring Probe Technique electrodes. Meter provides a constant voltage U and measures the current I flowing between elec-trodes. Resistance Rs is then easily calculated and the value of resistivity is equal to the value of resistance multiplied by the geometry coefficient.

  Measurement, Resistivity

2. Electrical resistivity methods

2. Electrical resistivity methods The resistivity method is used in the study of horizontal and vertical discontinuities in the electrical properties of the ground. It utilizes direct currents or low frequency alternating currents to investigate the electrical properties (resistivity) of the subsurface.

  Resistivity

Standard Test Methods for DC Resistance or Conductance of ...

3.1.11.1 Discussion—Volume resistivity is usually ex-pressed in ohm-centimetres (preferred) or in ohm-metres. Volume resistivity is the reciprocal of volume conductivity. 4. Summary of Test Methods 4.1 The resistance or conductance of a material specimen or of a capacitor is …

  Resistivity

Bioelectrical Impedance Analysis in Body Composition ...

of resistivity ( ). It is then observed that the end-to-end resistance (R) is the resistivity times the length (L), divided by the cross-sectional area (A) (i.e., R = L/A). Multiplying the right side of the equation by L/L gives R = L. 2 /Vol, where . Vol. is the volume. Rearranging gives . Vol = L. 2 /R, an equation that allows one to ...

  Analysis, Compositions, Body, Impedance, Resistivity, Bioelectrical impedance analysis in body composition, Bioelectrical

Chapter 4 RADIATION MONITORING INSTRUMENTS - IAEA

CHAPTER 4 104 Survey meters come in different shapes and sizes, depending upon the specific application (see Fig. 4.2). The gas is usually a non-electronegative gas in order to avoid negative ion formation by electron attachment, which would increase the collection time in the detector, thus limiting the dose rate that can be monitored.