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An EMF meter can measure AC electromagnetic fields, which are usually emitted from manmade sources such as electrical wiring, while gaussmeters or magnetometers measure DC fields, which occur naturally in Earth’s geomagnetic field and are emitted from other sources where direct current is present.ATtiny 85 EMF detector – [Link]
In this tutorial we will show how to build WiFi internet connected switch connected to EasyIoT Cloud. We will use ESP8266, solid state relay and Arduino IDE. Switch can be controlled by WEB application, native Android application or button.ESP8266 – 5$ internet connected switch – [Link]
This internet switch is “plug and play” – it will automatically set all EasyIoT Cloud settings, so no configuration in EasyIoT Cloud is needed.
Beside my Arduino instructables I also use pure ATmega328 and ATtiny85 microcontrollers. To program them I normally used a breadboard and the ArduinoISP setup with an Arduino UNO or NANO. But this was not the best solution.AVR Programmer Shield – [Link]AVR
So I build this programmer shield in my typical stripboard layout: Only straight lines – no crossings!
How to convert an old washing machine into a water powered generator In this video author is constructing a water powered generator using an old washing machine. WARNING: This video is intended for information purposes only, working with electricity can be dangerous, If you are not qualified, please consult an electrician before attempting any wiring shown in this video. Courtesy: Angry Ram |
In many electronic applications, temperature becomes an important factor when designing a system. Switching and conduction losses can heat up the silicon of the device above its maximum Junction Temperature (Tjmax) and cause performance failure, breakdown and worst case, fire. Therefore the temperature of the device must be calculated not to exceed the Tjmax. To design a good Thermal Management solution, the Tj should always be kept at the lowest operating temperature.
The idea behind this project was to create a cost effective device that could automatically charge and discharge multiple 18650 cells while determining the effective capacity of each individual cell. Individual cells can be binned by capacity, so multiple parallel packs with identical capacity can be put in series.
This Instructable will outline my complete design process including, specification development, component selection, circuit design/pcb layout, assembly, and software.
This is my PICkit 2 clone design. Its based on a simplified version of the Microchip PICkit 2 schematic and only supports 5v parts. It works with all the Microchip software including MPLAB, MPLABX,the PICkit 2 GUI Programming software and the PICkit 2 command line software.Build Your Own PICKit 2 Programmer – [Link]
It can be used with the PICkit 2 GUI Terminal Software and the PICkit 2 GUI Logic Analyzer. Best of all its an all leaded design that you can build in about an hour if you have of the parts.
Because this design is simplified and uses a fixed voltage reference, the programmer voltage cannot be controlled by the PICkit 2 software settings to lower the voltage. It also cannot do the “Vpp First” mode which in rare cases you may need to re-program a PIC that has a very fast internal oscillator and internal MCLR enabled.
The purpose of this article is to demonstrate how you can perform serial port communication in the VBA (Visual Basic Applications – script editor included in any typical Microsoft Excel distribution) but without using the MSComm control or any other third party add-on or ActiveX.Serial Port Communication in Excel (VBA) – [Link]
The idea is to make a hardware + mobile app which could be used by farmers, can update farmers with any issues with their farms and can analyse amount of sunlight, rain, soil moisture, pH and can suggest best fertilizers according to the data from the sensors. It can also compare the data with the local weather data for that GPS location. The app will also have real-time updated selling prices of crops for the farmer.Real Time Monitoring Of Crop Health using Intel Edison – [Link]
A little unofficial introduction to the Serial Plotter, introduced in the Arduino IDE version 1.6.6. This is a very basic and easy-to-use tool, that allows us to set up quick visualizations of numeric data for whatever purpose.Using The Arduino Serial Plotter – [Link]
Cambridge CMOS Sensors is a semiconductor company that designs gas sensor solutions to monitor the local environment; its CCS811 is the first digital product in its CCS800 product family of ultra-low power miniature gas sensors.CCS811 – Digital CMOS gas sensors for wearables & IoT – [Link]
The CCS811 integrates a metal oxide gas sensor with a microcontroller sub-system which enables Indoor Air Quality Monitoring, ease of design, extended battery life and reduced system cost for smartphones, wearables and connected home devices. It is based on CCS’s Micro-hotplate technology which enables a highly reliable solution for gas sensors, very fast cycle times and a significant reduction in average power consumption compared with traditional metal oxide gas sensors.
Digital isolators based on transformers and capacitors use magnetic and electric fields to couple data across isolation barriers where optocouplers use light. Digital isolators can be manufactured using CMOS technology allowing the integration of signal conditioning circuitry in the chip to greatly reduce power consumption and improve data transfer rates.iCoupler – Digital Signal Isolator – [Link]
The iCoupler family from Analog Devices is a family of digital isolators that feature up to 16 kVpk surge protection and that can withstand voltages up to 5 kV. Signal speeds go up to 150 Mbit/s.
This project lets you measure capacitors in an alone range of measure from 0.000pF to 1000uF. That is, a 16×2 LCD Display will be displaying a sole scale from 0.000pF to 1000uF whose main components will be an Arduino Uno and a 16X2 LCD Display.Arduino Digital Capacitance Meter – [Link]
I recently got hold of an Analog Devices AD587KN high precision 10.000V reference chip.Analog Devices AD587KN 10V reference chip – [Link]
This model of chip has an output value of 10.000V ± 5mV (that is, an output value of 9.995V to 10.005V) straight out of the factory. A voltage drift of 10ppm/°C at 25°C meaning that the output voltage will drift by 10μV for each 1°C the chip is exposed to. Additionally, the chip has a voltage trim input, so if you have access to a precision voltmeter, the chip’s output value can be adjusted even closer to 10.000V.
Alternatively, the chip’s output can be trimmed to a value of 10.24V. You may think that a value of 10.24V seems like a strangely familiar number. A value of 1024 is the decimal representation of 10bits, that is 2∧10 = 1024. Why would I want a voltage reference that outputs a value of 10.24V? Because it makes any ADC or DAC conversions much simpler.
In this project, we will be making a weather station that measures air pressure, temperature, rain drop, soil humidity and air humidity using Arduino which save the data for data acquisition!Arduino Weather Station (AWS) – [Link]
