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Data Acquisition / Data Logging Circuits
Data Acquisition / Logging: 
#'s -A      B - C      D - L      M - Q      R - T      U - Z


Last Updated: October 18, 2017 05:04 AM

Circuits Designed by Dave Johnson, P.E.

   Slotted Opto-Sensor used in Honeybee CounterI designed a circuit similar to this one a long time ago to help a beekeeper count the number of bees going into or out of a hive.  The low power circuit uses a slotted opto-sensor to detect the passing bees.  The circuit advances an electronic counting . . . Hobby Circuit designed by David Johnson P.E.-July, 2000


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Reading Data from the Parallel Port -  The diagram below shows 5 switches connected to the 5 input lines of the parallel port.  An external 5 volt power supply is used to provide high logic levels to the input pins when the switches are open.  Three 1.5 volt batteries in series can be used to obtain 4.5 volts which is close enough.  The 330 ohm resistors.   __ Designed by Bill Bowden

Recognizing & Reducing Data Acquisition Switching Transients an 1444 -  Application Note___ Aligent

Recording-Portable Mixer for NAGRA Recorder-Using Models 360BM & 425  -  No description, just schematicOpAmps Lab Inc is the manufactor ofAmplifiers (Video / Audio / Distribution / Microphone / Equalization / Line / VCA / Power), Switchers (Routing / Assign / Matrix), Mult (Press) (Network-Feed) Boxes, Audio Transformers, Oscillators, Power-Supplies, Custom Sub-Systems.  __ Application OpAmps Lab Inc.

Remote digital thermometer sends data over AC power line -  This circuit is a simple oscillator.  It's frequency is in the range 35 kHz60 kHz and it' s adjustable.   __ Designed by Ali Alipour.ralipoor90 @ gmail.com

Remote Digital Thermometer sends data over AC Power line -  This circuit is intended for precision centigrade temperature measurement, with a transmitter section converting to frequency the sensor's output voltage, which is proportional to the measured temperature.  The output frequency bursts are conveyed into the mains supply cables.  The receiver section counts the bursts coming from mains supply and shows the counting on three 7-segment LED displays.  The least significant digit displays tenths of degree and then a 00.0 to 99.9 °C range is obtained.  Transmitter-receiver distance can reach hundred meters, provided both units are connected to the mains supply within the control of the same light-meter.   __ Contact: Flavio Dellepiane, fladello @ tin.it

Remote Infrared Terminal -  This unit provide 2 way IR communications using a numeric keypad and an LCD display.  Data is sent and recieved in ASCII with no regard to what the data means to any particular device __ Designed by Luhan MonatMesa Arizona

Resonant Approach to Designing a Band-Pass Filter for Narrow-Band, High IF, 16-Bit, 250 MSPS Receiver Front End  -  The modified AD9467-250EBZ board contains the circuit evaluated as described in this note, and the HSC-ADC-EVALCZ data capture board is used in conjunction with VisualAnalog evaluation software, as well as the SPI controller software to properly control the ADC and capture the data.  App Note AN-835 contains complete details on how to set up the hardware and software to run the tests described in this circuit note.  __ Analog Devices from the Lab

Rolling Code Security System; Pt.2 -  Last month, we described the circuitry and gave the PC board assembly details for our new Rolling Code Keyless Entry System.  This month, we cover the installation and setting-up procedures and describe the optional SOIC adaptor board, so that you can program the PIC micro out of circuit.___ SiliconChip

RS-232C handshake lines transfer data frame -  10/23/97 EDN-Design Ideas The asynchronous RS-232C interface is a simple, low-cost option for interconnecting processor-based systems, but this character-oriented interface supports no direct mechanism to transfer variable-sized messages as self-contained data packets.  However, you__ Circuit Design by SK Shenoy, Naval Physical & Oceanographic Lab, Kochi, India

RS422 Converter for Minilogger -  Build a simple line driver/reciever that meets RS422A for the MiniLogger V1.0.  Place a distant Minilogger and communicate over a full duplex serial line.   __ Designed by Wichit Sirichote

RTC-Based Event Logger -  Event log data is a unique source of information for security, audit, compliance and troubleshooting purposes.  An event logger enables you to view the log of a series of events.  This...___ Electronics Projects for You

Selecting Temperature Transducers for Data Acquisition Systems 5988-7505en -  Application Note___ Aligent

Selecting the Right Data Acquisition System an 1412 -  Application Note___ Aligent

Self-Powered Solar Data Logger -  My project is a self-powered solar data logger.  Put out in the sunlight, it will measure the light level and log this to memory to be later downloaded to a computer.  The system is powered by a small solar panel and battery __

Serial Port A/D Converter -  This circuit is a simple adapter for PC parallel port to think that there is a printer connected to computer.  This adapter is useful for testing printing speed with different software and as a part of your own designs. 
You can use this circuit to connect your simple circuits to the parallel port __ Designed by Tomi Engdahl

Serial Port temperature datalogger -  Features:  provides real-time data to your computer via serial port, interfaces up to four DS1820 temperature sensors, absolute accuracy near 0.5 degrees celcius (as per DS1820 specifications), relative accuracy near 0.01 degrees celcius, speaks in Centigrade or Fahrenheit (selectable by header pins), __ Designed by mail at quinapalus dot com

Simple Circuit Computer A/D Uses a Serial Port -  Here is an inexpensive way to get slow-moving analog data directly into a spreadsheet on your computer! A simple circuit connects to a serial port and a short Qbasic program gathers and saves 12 bit data to a file.  A spreadsheet automatically retrieves the file and displays the data in real time.  Once the data is in the spreadsheet, the full power and flexibility of the office suite is available. __ Designed by John Nooyen

Simple Circuit control shuts down data-acquisition systE - M -  One of the most effective ways to reduce circuit power is to shut down unused components.  Some circuits with power-shutdown capability reduce supply current 1000-fold compared with normal operation.  Placing data-conversion and support components in shutdown between conversions or when conversions are unnecessary significantly reduces supply current and average dissipation.   __ Circuit Design by Kevin Hoskins, Linear Technology Corp, Milpitas, CA

Simple Circuit Data-Logging Weather Station, Pt.1 -  It's cheap and simple to build, operates completely unattended and will run for years on a set of AA batteries.___ SiliconChip

Simple Circuit Data-Logging Weather Station; Pt.2  -  Last month we introduced our new Rain and Temperature-Measuring Weather Station, with all the electronics.  This month we get into the nitty-gritty of building itall the mechanical detail and then actual contstruction.___ SiliconChip

Simple Circuit Device for Connecting Serial Instrument with RS485 or RS232 to the Internet -  The device that converts RS485 and RS232 to the ethernet LAN has been developed.  The device was built with the Lantronix XPort embedded ethernet server and the industrial standard differential RS485 transceiver, 75176 and the single-end RS232 driver, MAX232.  The XPort module provides 10/100 ethernet port and the +3V logic UART.  The 75176 and MAX232 are +5V TTL logic __ Designed by Wichit Sirichote

Simple Circuit Lie Detector -  Here's a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth.  It is not as sophisticated as the ones the professionals use, but it works.  It works by measuring skin resistance, which goes down when you lie __ Designed by Aaron Cake

Simple Circuit lie Detector -  Here's a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth.  It is not as sophisticated as the ones the professionals use, but it works.  It works by measuring skin resistance, which goes down when you lie. __ Designed by  © Hack Canada

Simple Circuit RS422 Converter for Minilogger -  Build a simple RS422 converter for the Minilogger.   __ Designed by Wichit Sirichote

Simpler temperature datalogger based on PIC12F683 & Maxim DS18B20 -  It is a very simple data logger project based on PIC12F683 microcontroller. The microcontroller reads temperature values from a temperature sensor on a regular interval basis and stores them into its internal EEPROM memory. The recorded temperatures can be later transferred to a PC through serial interface. I originally published this project on electronics-lab.com last summer. __

Slotted Opto-Sensor used in Honeybee Counter -  I designed a circuit similar to this one a long time ago to help a beekeeper count the number of bees going into or out of a hive.  The low power circuit uses a slotted opto-sensor to detect the passing bees.  The circuit advances an electronic counting . . . Hobby Circuit designed by David Johnson P.E.-July, 2000

Spydar 2 -  PIC Project  This is a circuit monitoring device.  It runs for over 10 days and can log up to 32k events both digital and analog.  Samples are logged either on a timing basis (.01 to 2.5 seconds) , or on a triggered basis.  Four inputs are provided, up to three of which can be analog __ Designed by Luhan MonatMesa Arizona

Square Root Function Improves Thermostat -  09/30/99 EDN-Design Ideas Perhaps the most elementary rule of control-loop design theory is that feedback-loop performance is fundamentally linked to the careful choice—and stability—of loop gain.  Insufficient loop gain leads to poor setpoint accuracy.  Too much gain can induce feedback instabilities, __ Circuit Design by W Stephen Woodward, University of North Carolina, Chapel Hill, NC

Strain gauge sensor interface -  Circuit Diagram Only __

Tape Recorder-4.5 H Magnetic Play-Back Head Preamplifier-Using Model 425  -  No description, just schematicOpAmps Lab Inc is the manufactor ofAmplifiers (Video / Audio / Distribution / Microphone / Equalization / Line / VCA / Power), Switchers (Routing / Assign / Matrix), Mult (Press) (Network-Feed) Boxes, Audio Transformers, Oscillators, Power-Supplies, Custom Sub-Systems.  __ Application OpAmps Lab Inc.

Tape Recorder-Self-Resolver-Using Models 39, 425 & 700  -  No description, just schematicOpAmps Lab Inc is the manufactor ofAmplifiers (Video / Audio / Distribution / Microphone / Equalization / Line / VCA / Power), Switchers (Routing / Assign / Matrix), Mult (Press) (Network-Feed) Boxes, Audio Transformers, Oscillators, Power-Supplies, Custom Sub-Systems.  __ Application OpAmps Lab Inc.

Telephone Call Logger -  It logs all outgoing calls and can download the data via your PC's serial port to an Excel spreadsheet.___ SiliconChip

Temperature Data Logger -  This project will show you how to build Temperature Logger using a Stamp II connected to a PC serial port.  I was planing on using the DS1620, but used a LM335 temperature sensor because it only needs a two wire interface and it is easy to waterproof.  All i did to waterproof it was to put some heat srink tubing around the 3 wires then around the hole sensor __ Designed by shaunwilson19 @ yahoo.com

Temperature Measurement using the LTC1090/91/92 Series of Data Acquisition Systems -  DN5 Design Notes___ Linear Technology/Analog Devices

The MAX1407 Complete Data Acquisition System Simplifies Your System Designs -  App Note/ 830 / May-09___ Maxim Integrated

Thermostat Node Schematic -  Circuit Only __ Designed by Ed Cheung

Tiny Server -  The device that converts RS485 and RS232 to the ethernet LAN has been developed.  The device was built with the Lantronix XPort embedded ethernet server and the industrial standard differential RS485 transceiver, 75176 and the single-end RS232 driver, MAX232.  The XPort module provides 10/100 ethernet port and the +3V logic UART.  The 75176 and MAX232 are +5V TTL logic __ Designed by Wichit Sirichote

Trace voltage-current curves on your PC -  10/11/01 EDN-Design Ideas Some years ago, one of the fundamental electronic instruments was the laboratory curve tracer.  A CRT display would sweep out terminal behavior (current versus voltage] from which you could derive mathematical models.  Classic present__ Circuit Design by Clayton Grantham, National Semiconductor, Tucson, AZ

Track multisite temperatures on your PC -  04/18/02  EDN-Design Ideas The low-cost circuit in Figure 1 allows you to track four remote temperatures with thermistor sensors through the parallel port on your PC.  This four-zone thermometer instrument has a temperature range of –40 to +90°C and a resolution of better than ±1°C.  You can calibrate its accuracy to within 1°C over a 0 to 50°C span and within 3°C over a –40 to +90°C span. __ Circuit Design by Clayton Grantham

Transfer data frames over asynchronous RS-232C lines -  01/15/98 EDN-Design Ideas The asynchronous RS-232C interface is a simple, low-cost option for interconnecting processor-based systems.   __ Circuit Design by SK SHENOY, NAVAL PHYSICAL AND OCEANOGRAPHIC LAB, KOCHI, INDIA

TSR Logs Assembler & Compiler Errors in File -  04/27/95 EDN-Design Ideas If you use a PC to develop software for embedded systems, you probably still use good, old MS-DOS for most of your processing, because most compilers, assemblers, and linkers don't run under MS Windows.  If you're developing a sizable program, you probably use automated procedures such as batch files or "make" files to build and rebuild your target program. ____ Circuit Design by John S Santic, Computer Consultant, Frederick, MD

Two Wire Isolated & Powered 10-Bit Data Acquisition SystE - M -  DN19 Design Notes___ Linear Technology/Analog Devices

Types of Data Acquisition Architectures 5988-5387en -  Application Note___ Aligent


Data Acquisition / Logging:  #'s -A      B - C      D - L      M - Q      R - T      U - Z

 


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