Hobby Projects - Insulation tester, LED Circuits, Meters.
Showing posts with label Embedded-2. Show all posts
Showing posts with label Embedded-2. Show all posts

Wednesday, August 16, 2017

Toy SMPS or an Overkill White LED Driver

Jonathan Westhues site of Intriguing Projects include A Test Instrument for HF/LF RFID and a compiler that starts with a ladder diagram and generates native PIC16 or AVR code.

Toy SMPS or an Overkill White LED Driver

Toy SMPS or an Overkill White LED Driver

I sense the load current and control the duty cycle. The PWM pin on the AVR drives the gate of the FET through a couple of BJTs. Note the absence of any input capacitance; Vin looks terrible but it works. The micro power supply section is isolated with an RC.

delabs Notes

This is a nice way to start, learn uC and Power electronics in one go. It does not matter if it an expensive solution for LED Lighting. It certainly is an excellent Educational Project.
It may also be useful to use Intelligent Systems (uC and Firmware) to monitor and manage LED Arrays and control their brightness and color. Large Arrays can be Interfaced to PC by XBee for Home/Office or Factory Lighting Automation and Energy Consumption Optimization.

Microcontroller Interfacing

uC Real World Interface

uC I/O is Keyboard and LCD when you Build a calculator or a Text/Morse Communicator. When you control a motor it is Drive/Speed and Direction for Motor and Tacho or Opto Counters for Feedback. In both cases you have Input and Output which is Logic or Analog which has to reach the CPU.

Saturday, April 15, 2017

Development boards and Tools - OLIMEX

Designs, prototypes and manufactures printed circuit boards, sub-assemblies and complete electonic products.

Development boards and Tools - OLIMEX

64MB SDRAM, 512MB NAND Flash. Ethernet 100Mbit controller, USB host, USB device, RS232 and 40 pin extension port with all unused SAM9261 ports available for add-on boards. Runs Linux, WindowsCE and other RTOS natively. RTC - 3V Li battery.

SAM9-L9261 Development Platform with ARM9

SAM9-L9261 Development Platform with ARM9

SAM9-L9261 is development platform with ARM9 microcontroller, TFT LCD 3.5" 320x240 pixels with TOUCHSCREEN.
  • MCU: AT91SAM9261 16/32 bit ARM9 180MHz operation
  • On board voltage regulator 3.3V with up to 800mA current
OLIMEX Ltd.
89 Slavjanska St., P.O.Box 237, Plovdiv 4000 BULGARIA

Wednesday, July 06, 2016

Elektronik und Mikrocontroller - Burkhard Kainka

Author of books and CDs, Microcontroller, interface programming or new ideas for hobby projects. The Electronics Fundamentals for hobby and education helps the beginner with valuable information.

The electronic logbook is amazing, you can have a look at so many circuits and projects with photos. You will learn many things and make you develop skills.

Elektronik und Mikrocontroller - Burkhard Kainka

For the advanced Hobbyist there are projects on Microcontroller and Measuring and control devices with the USB and PC Interfacing,

Burkhard Kainka - SDR Radio

SDR Radio with USB

Electronics experiments for children - "For children it is easier than for adults. Since it is enough, if someone applied sufficient time and a little tinkering with them. Often all it takes is a little push to arouse interest and skills."

Tuesday, May 12, 2015

Read Humidity and Temperature on PC

Would you like to view the Relative Humidity RH or The Temperature of your Room, This project will enable you to get these values into the PC on the Serial Port or what you may know as the RS232 port. This project is designed by Peter H. Anderson.

Read Humidity and Temperature on PC

A High humidity like 90% is seen after a Rainfall, A low Humidity like 25% means dry days. A humidity of around 50% is healthy, above that Bugs and Fungus trouble. Less that 40% cause skin and breathing irritations. 60% is comfortable for us and  most equipment. High humidity can cause trouble to unprotected electronics.    

Read Humidity and Temperature on PC

This device has a serial interface, that means you could use a Serial to USB circuit and even interface with your Android tablet.

"This is an assembled unit which interfaces with a PC COM port and provides the capability of measuring the relative humidity and temperature using a Sensirion SHT-71 sensor. It includes an assembled printed circuit board, a 12 VDC wall power unit, and a six foot serial cable (DB9) . The unit interfaces with a COM port or similar at 9600 baud. (A USB to RS232 converter may be used)."

SHT71 - Digital Humidity and Temperature Sensor

Replaceable relative humidity sensor, The internal calibration allows for simple and easy replacement in demanding environments. The capacitive humidity sensor SHT71 is fully calibrated and provides a digital output.

Sunday, June 30, 2013

Open ARM9 SBC

Powerful Devices in small sizes are possible with ARM based devices. Handhelds, Netbooks, Robots and Small Machinery can integrate an ARM based SBC with Touchscreen at moderate cost and low energy burden.

If you want to scale higher in some dedicated embedded solution for a specific need, you also need the full power of a PC, Then an ARM based system with Linux OS, can be Tailored to a perfect fit.

Open ARM9 SBC

This page documents an ARM9 single board computer designed for image acquisition and processing. It's an open implementation, which means schematics and layout files are freely available. The platform runs Linux/ARM.

Open ARM9 SBC

Specs
  • 180 MHz ARM9 processor (Atmel AT91RM9200)
  • 3 MPixel CMOS sensor (Micron MT9T001)
  • Altera Cyclone FPGA with 6000 LEs
  • 2x32 MBytes of SDRAM (32MB for the ARM9 and 32MB for the FPGA)
  • 16 Mbits of serial flash
  • 1 10/100 Intel Ethernet interface
  • 1 high speed USB 2.0 interface
  • 1 SPI interface
  • 1 serial (RS-232) interface
Similar Projects

ARM9200 board running Linux

"My student research project was programming a bootloader and patching the Linux kernel and a root filesystem in a way that an Atmel AT91RM9200 based microcontroller board does not only boot without problems, but is also a nice environment for applications "

Darrell Harmon, developing his own open SBC. Analog Devices Blackfin 532 DSP + Xilinx Spartan 3 XC3S1000 FPGA. Also has USB 2.0 High Speed port.

Thursday, November 10, 2011

mbed - Rapid uC Prototyping

The mbed Microcontroller is made for prototyping, and comes in a 40-pin 0.1" pitch DIP form-factor so it's ideal for experimenting on breadboard, stripboard and PCBs. It is a uC ScratchPad for trying out new ideas.

mbed - Rapid uC Prototyping

From Hyper Embedded - Microcontroller ASIC and EDA

The mbed Compiler lets you write programs in C++, and then compile and download them to run on the mbed Microcontroller. The mbed Compiler is a Web-App in the Cloud, you don't have to install or setup anything to ignite your first mbed project idea. Any OS, Any Where, your software is online and ready to use. You will need a computer or netbook with a Browser.

Two XBees and One USB Explorer

"I had two XBee modules that I really wanted to use with the mbed. These are the standard OEM RF Modules one with an antenna and one with a ANT chip. For one of the chips I will be using the Xbee Explorer USB from Sparkfun...."

Tuesday, June 14, 2011

SpikenzieLabs - Kits and Projects

It is nice to see many building solutions over the Arduino base like this Prototino. Both hardware and software of Arduino are Extensible. This gives opportunity for New tools and Solutions over this compact system Framework.

Prototino an Arduino clone for Prototyping 

One Idea can be an Arduino with a CPLD and Universal I/O driver for robotics. This can come with a Visual IDE which is close or better than the old Visual Basic 6 in usability.

Prototino an Arduino clone for Prototyping

An Youngster can just Drag Drop Components and Link them to build his Robot or Home Automation Solution. Robotics Designers can have the option of looking at the code/hex if needed.

SpikenzieLabs - Kits and Projects
6135 de Maisonneuve West, Suite 12, Montreal, QC H4A 2A3, Canada.

Friday, April 10, 2009

Embedded Systems Made Easy - StickOS

"StickOS BASIC is intended to make embedded systems technology and advanced microcontroller functionality quickly and easily accessible to High School students, hobbyists, and researchers, etc., with minimal investment of time, education, and money.

Interfacing with digital circuitry, analog circuitry, serial circuitry (UART and SPI), servo motors, and buzzers, etc., all become trivial single-line, single-minute tasks in StickOS BASIC, so the user can concentrate on achieving the control task at hand, rather than the detailed mechanics of control."

Embedded Systems Made Easy - StickOS

- Rich Testardi (mail) 2009

"StickOS BASIC is an entirely MCU-resident interactive programming environment, which includes an easy-to-use editor, transparent line-by-line compiler, interactive debugger, performance profiler, and flash filesystem, all controlled thru an interactive command-line user interface....

CPUStick is a 1"x4" very low cost standalone USB embedded computer based on the Freescale MCF52252 ColdFire MCU and MC13201 ZigFlea Wireless Transceiver,..."

StickOS Examples - A simple embedded system, like a toaster oven temperature profile controller, can be brought online in record time!

LCD Digital Thermometer

LCD Digital Thermometer - With the advent of advanced serial peripherals based on the I2C or QSPI serial interfaces, embedded systems can take on a whole new level of real-world functionality!  An LCD digital thermometer, displaying both Celsius and Fahrenheit, can be brought online in minutes, with just a quick study of the I2C peripheral register or protocol definitions!

Friday, February 13, 2009

IkaLogic - Robotics and Embedded Tutorials

IkaLogic - Robotics and Embedded Tutorials

Micro-controllers - 8051 tutorials, In System Programmer, Multi processor communication, embedded C tutorial, programming tips and tricks.ikalogic - Digital Thermometer

Sensors & Measurement - IR proximity sensor, Ambient light ignoring sensors, home made Frequencymeter/Tachometer/Thermometer, Line sensors, light sensor, temperature sensors...

Digital Thermometer built with the AT89S52 micro-controller

This article shows you how to build a digital thermometer from the beginning to the end, using a thermistor and a 8051 microcontroller.

Thursday, August 07, 2008

fpga4fun - Electronic Adventures with FPGA

fpga4fun - Electronic Adventures with FPGA

"This site reflects my experience and my opinions on FPGA technology. It is meant to be informative and useful to anybody interested in learning FPGA technology."

- Jean P. Nicolle
  • HDL tutorials
  • SMD technology
  • Crystals and oscillators
  • How FPGAs work
  • Digital oscilloscope