Data acquisition (DAQ) and data logging circuit diagrams / circuit schematics

Note that all these links are external and we cannot provide support on the circuits or offer any guarantees to their accuracy. Some circuits would be illegal to operate in most countries and others are dangerous to construct and should not be attempted by the inexperienced. For paid software / firmware / hardware design and consulting work please see Professional software development and electronic design in Hobart, Tasmania who also serves international clients. For pre-built LoRaWAN IoT sensors with a turnkey web-based IoT monitoring platform please see Telemetry2U LoRaWAN IoT platform.

There are 44 circuit schematics available in this category. Click here for all circuit diagrams. The Last circuit was added on Saturday, January 28, 2023.Please note some adblockers will suppress the schematics as well as the advertisement so please disable if the schematic list is empty.

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Circuit	Category	Date Added	Votes
Precision Digital Altimeter	Data Acquisition	May 01, 2004	1
8 Photo-Detector Circuit Board	Data Acquisition	Sep 10, 2006	0
Self made data-logger V2.5 (second edition)	Data Acquisition	Nov 27, 2002	-3
Circuit monitoring device logs for over 10 days and can log up to 32k events both digital and analog	Data Acquisition	May 24, 2010	0
Home Brew Compass Sensor	Data Acquisition	Apr 27, 2003	-1
Connect a NTC with a wheatstone bridge to a normal AD-Input	Data Acquisition		1
Making an LM35 temperature recorder (based on PIC12F675) - logs to EEPROM	Data Acquisition		0
Making an LM35 temperature recorder (based on PIC12F675) - serial output	Data Acquisition		-1
Accelerometer with microcontroller and display	Data Acquisition		-1
Using a 555 Timer as an A/D converter	Data Acquisition		0
Honey Bee counter (PDF)	Data Acquisition	Jan 26, 2001	-1
Capacitance type liquid level measurement (PDF)	Data Acquisition	Jan 26, 2001	0
Transducer Amplifiers	Data Acquisition		0
ADC Input Driver DIFFERENTIAL to DIFFERENTIAL	Data Acquisition	Apr 11, 2011	0
ADC Input Driver DIFFERENTIAL to SINGLE-ENDED	Data Acquisition	Apr 11, 2011	2
ADC Input Driver FULLY DIFFERENTIAL AMPLIFIER	Data Acquisition	Apr 11, 2011	0
ADC Input Driver SINGLE-ENDED to DIFFERENTIAL	Data Acquisition	Apr 11, 2011	-1
ADC Input Driver SINGLE-ENDED to SINGLE-ENDED	Data Acquisition	Apr 11, 2011	1
Thermostat node schematic	Data Acquisition	Oct 31, 2002	0
Ultrasonic Range Finder & Imager	Data Acquisition	Jun 09, 2002	1
Remote digital thermometer sends data over AC power line	Data Acquisition	Feb 21, 2005	0
Voltage follower with 1G ohm input resistance	Data Acquisition	Feb 21, 2005	0
Serial Port A/D-converter	Data Acquisition	Jan 26, 2001	-1
Centronics port D/A converters and low-pass filter	Data Acquisition	Jan 26, 2001	0
Strain gauge sensor interface	Data Acquisition		0
Wind speed logger	Data Acquisition	Oct 25, 2009	1
Wind speed logger Mk2	Data Acquisition	Oct 25, 2009	0
PIC16F877A Thermometer with MCP9700A sensor	Data Acquisition	Jun 27, 2010	0
4 Bit Digitizer / flash ADC using discrete components	Data Acquisition	Mar 05, 2009	0
Accelerometer Schematic	Data Acquisition	Oct 31, 2002	0
Pressure Sensor-Based Altimeter Circuit	Data Acquisition	Apr 27, 2003	1
Water-level sensor	Data Acquisition	Jan 26, 2001	1
1-Wire Barometer project	Data Acquisition		0
Addressable ADC	Data Acquisition	Jul 24, 2002	-1
ADXL202 break-out board	Data Acquisition		0
ADC logger 6ch Measurent and serial port logger with wireless longrange link	Data Acquisition		0
Atmel Mega32 8ch Analog signal measure logger	Data Acquisition		0
Computer datalogger circuits	Data Acquisition	Jul 10, 2015	0
Simple Computer A/D Uses a Serial Port	Data Acquisition	Jul 10, 2015	0
Simpler temperature datalogger based on PIC12F683 and Maxim DS18B20	Data Acquisition	Jul 15, 2015	1
Digital Remote Thermometer	Data Acquisition	Jul 30, 2015	0
XBee ZNet 2.5 Wireless Accelerometer	Data Acquisition	Jun 28, 2016	0
Doppler Radar Sensor using CDM324 24GHz radar modules	Data Acquisition	Sep 06, 2022	1
Analog front-end / amplifier for CDM324 24GHz radar module	Data Acquisition	Sep 06, 2022	1