Serial Port Communication in C#

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Maurizio tipped us with his latest article on how to use Serial Port in C#. The article does cover the basic code needed to achieve serial communication.

The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the wide popularity of the UART interface which is to be found on many microcontrollers or on many test and design instrumentation (programmable power supplies, multi-meters, oscilloscopes etc).

Serial Port Communication in C# – [Link]

Hack-proof RFID chips claimed by MIT

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Researchers at MIT has announced a new RFID chip that is almost impossible to hack and it could mean that an identity thief couldn’t steal your credit card number by sitting next to you.

The researchers’ new chip uses a bank of 3.3-volt capacitors as an on-chip energy source. But it also features 571 1.5-volt cells that are discretely integrated into the chip’s circuitry. When the chip’s power source — the external scanner — is removed, the chip taps the 3.3-volt capacitors and completes as many operations as it can, then stores the data it’s working on in the 1.5-volt cells.

Hack-proof RFID chips claimed by MIT – [Link]

36V, 800mA Robust Linear Regulator Has Extended SOA

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Linear Technology Corporation announces the LT3089, a rugged 800mA wide input voltage range linear regulator with key usability, monitoring and protection features. The device has an extended safe operating area (SOA) compared to existing regulators, making it ideal for high input-to-output voltage and high output current applications where older regulators limit the output. The LT3089 uses a current source reference for single resistor output voltage settings and output adjustability down to 0V. Output current limit can be set externally with a single resistor. This regulator architecture, combined with low millivolt line and load regulation, enables multiple ICs to be paralleled easily for heat spreading and higher output current. The current from the device’s current monitor can be summed with the set current for line-drop compensation, where the output of the LT3089 increases its current to compensate for line drops.

36V, 800mA Robust Linear Regulator Has Extended SOA – [Link]

How to use the 4.3′ E-Paper display with Arduino

educ8s.tv has uploaded another tutorial on how to use a e-paper display with Arduino. Source code is provided.

Electronic paper and e-paper are display technologies that mimic the appearance of ordinary ink on paper. Unlike conventional backlit flat panel displays that emit light, electronic paper displays reflect light like paper. This make them more comfortable to read, and provide a wider viewing angle than most light-emitting displays. Many electronic paper technologies hold static text and images indefinitely without electricity.

How to use the 4.3′ E-Paper display with Arduino – [Link]

MSP430 VFD Clock

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Daniel Johnson @ danielelectronics.com has build a VFD Tube Clock based on MSP430 microcontroller and explains it’s code.

I wanted to do a follow-up to my last clock build, the MSP430 Analog Gauge Clock, reusing some of the code from that project, and I had an IV-18 vacuum florescent display (VFD) tube that I bought on Ebay. Also, I wanted to finish the project before Christmas break was over. That didn’t happen. But I did manage to get the code written and most of the hardware built.

MSP430 VFD Clock – [Link]

Arduino Controlled Modular Bench Power Supply

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Denis @ envox.hr has designed a great PSU that is reliable, modular, programmable and of course Open source. The power supply is controlled by an Arduino and a touchscreen TFT screen is used to monitor and control it. It comes with a bunch of features you can check on the link below.

The programmable bench power supply project was an attempt to create reliable, modular, open and programmable power supply that can be used for various tasks starting with powering breadboard, charge (or to some extent discharge) batteries of various types and sizes or use as a tool in school/educational and science experiments.

Arduino Controlled Modular Bench Power Supply – [Link]

How to Set Up and Program an LCD Display on an Arduino

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circuitbasics.com has a nice tutorial on how to use a common Hitachi HD44780 LCD display on Arduino. Many of the functions available are discussed and shown in examples.

In this tutorial, I will explain how to set up an LCD display on an Arduino, and show you (with examples) all of the functions available to program it. The display I will be using here is a 16×2 LCD display that I bought for under $10 on Amazon. They can be very useful in projects that output data, and will make your project look a lot more interesting.

How to Set Up and Program an LCD Display on an Arduino – [Link]

Soil Moisture Sensor with SD logging

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WojciechM3 @ instructables.com has build an Arduino based soil moisture sensor with character LCD, real time clock and SD card logging.

It can be very helpful with a master degree biotechnology/biology/botanics works, however remember that kind of a project can be only add as a bonus as it is in my Master thesis. Good luck with building it!

Soil Moisture Sensor with SD logging – [Link]

5V Symmetrical Regulated Power Supply

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This Project provides Positive and Negative (Dual Output) 5 V @ 1 A Regulated Power Supply.

Specifications

  • Input 7-0-7 VAC to 12-0-12 VAC or +/- 9 to 18 VDC
  • Output : Dual output ± 5 V @ 1 A regulated low ripple DC voltage
  • Heat-sink for regulator ICs
  • Onboard bridge rectifier to convert AC to DC
  • LED indication for both the outputs
  • Thermal overload/short circuit protection (provided by IC feature)
  • Screw terminal connector for easy input and output connection
  • Filter capacitors for low ripple DC output
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 46 mm x 60 mm

5V Symmetrical Regulated Power Supply – [Link]