App note from Vishay about their resistors with special wire termination which are used in automotive application such as sensors for engine knock , crankshaft and liquid level. Link here (PDF) As the electronic contents in automobiles are growing, there is increasing demand of electronic assemblies, such as sensors, to meet specific application requirements. The […]
Tag Archives: sensors
App note: 4-20mA current loop primer
Basics of current loop App note from Murata, discussing the basic theory of the 4-20mA current loop operation. Link here (PDF) The 4-20mA current loop is a common method of transmitting sensor information in many industrial process-monitoring applications. A sensor is a device used to measure physical parameters such as temperature, pressure, speed, liquid flow […]
Bipedal walking sentinel project
A bipedal walking robot by Ye Guan: The robot will have a complete compliment of sensors to help it understand its surrounding and its own condition. The current design uses a total of seven sensors. For external obstacle avoidance there is a sonar sensor to detect long range surroundings, and an inferred distance sensor pointed down to detect […]
Mailbox wireless alert project
If you are waiting for some electronic parts to be delivered the wait can be agony. It is especially painful when you learn your parts which you desperately need have been sitting in your mailbox for most of the day because the mailman came early… This problem is solved by this Mailbox Wireless Alert Project. Re-purposing […]
LEWE: the biometric wristband
Boris Landoni from Open Electronics writes about a new open source project the LEWE, a wristband that reads biometric: The Lewe project aims to collect and use available technologies to make a low cost idea that is applicable to all sectors using sensors for data collection. This project goal is the development of a communication protocol, […]
Low cost, high accuracy temperature sensing with a thermistor
Mike has written an article about using cheap thermistors as an alternative to I2C/1-wire temperature sensors: This post discusses the evaluation of a thermistor-based technique for small embedded systems capable of achieving uncalibrated temperature accuracy to rival expensive digital sensors. An experimental comparison of various sensors over temperature is then introduced.
Bus Pirate: TMP102 I2C temperature sensor
Anthony interfaced the TMP102 I2C temperature sensor with the Bus Pirate: This is a tiny I²C sensor which provides a great resolution (12 bits), accuracy (0.5° C), and nice features including programmable high/low alerting temperatures and low power consumption. The ADDR/A0 pin allows for configuring the slave address to allow up to 4 devices on […]
Freescale publishes open sample data sets for inertial and magnetic sensors
On working with the MMA7260Q accelerometer Mike Stanley from Freescale semiconductors writes: There’s nothing like looking at the raw data, running it through an algorithm and viewing the results to cement an understanding of the technology. Later, I gathered an appreciation for the need to be able to reproduce my results from one run to […]
Codebox: save Arduino sensor data to Google
Many are familiar with how to read data from Arduino into Processing. One such example varies the a PC’s onscreen graphics relative to the intensity of light on an LDR. Here MAKE presents a project which web enables Arduino sensor projects, allowing Processing data to be communicated and stored in a Google spreadsheet doc.