Categories

Archive for the ‘sensors’ Category

Tiny particle sensor node with decorative case

Wednesday, March 13th, 2019

Lucky Resistor published a new build: This article is about a small sensor node with a decorative case. It is based on the Raspberry Pi Zero W board with a custom sensor shield on top. I publish all hardware files for a simple version of the sensor, so you should...

Tags: ,
Posted in R-Pi, sensors | No Comments »

Outdoor UV index sensor

Tuesday, February 19th, 2019

A detailed instructions of how to build this outdoor UV index and ambient light sensor from Mare & Gal Electronics: The VEML6075 senses UVA and UVB light and incorporates photodiode, amplifiers, and analog / digital circuits into a single chip using a CMOS process. When the UV sensor is applied, it is able to...

Tags: ,
Posted in how-to, sensors | No Comments »

BMP180 based USB atmospheric pressure monitor

Wednesday, December 26th, 2018

Dilshan Jayakody published a new build: We initially developed this USB atmospheric pressure monitor to study some operating characteristics of Bosch BMP180 sensor. BMP180 is low cost sensor to measuring barometric pressure and temperature. According to the data sheet this sensor can use to measure pressure ranging between 300hPa to...

Tags: , ,
Posted in sensors, USB | No Comments »

Calibrate a magnetic sensor

Monday, November 19th, 2018

Liudr shared a how-to on calibrating a sensor: First of all, what is calibration? In a general sense, calibrating a sensor makes the sensor provide the most accurate readings allowed by the sensor’s own precision. As an example, let’s assume for a moment that the earth’s magnetic field and any...

Tags:
Posted in how-to, sensors | No Comments »

Particle sensor with LoRa

Friday, July 27th, 2018

Mare published a new build: Particle sensors could be cheap and easy to use. Disadvantage of lowest cost PM sensors is lack of “calibration”. The best method to measure particle content dispensed in the air is to collect the air sample and analyse it off-line in the laboratory with proper...

Tags: ,
Posted in sensors | No Comments »

Dual ultrasonic sensors combine for 2D echolocation

Friday, July 13th, 2018

A how-to on making a Dual-sensor ultrasonic echo locator by lingib, project instructables here: This instructable explains how to pinpoint the location of an object using an Arduino, two ultrasonic sensors, and Heron’s formula for triangles. There are no moving parts. Heron’s formula allows you to calculate the area of any triangle...

Posted in Arduino, sensors, tutorials | No Comments »

Multisensor LoRa device

Thursday, April 26th, 2018

Mare published a new build: The described device is nearly matchbox-sized board (50 x 24 mm) packed with sensors. Auxilary board is 10x50mm with additional sensors. The module is developed around the Murata ABZ LoRa module, which integrates STM32L072 and samtech SX1276 in tiny 12.5 x 11.6 x 1.76 mm...

Tags: ,
Posted in sensors | No Comments »

Small motor controller with integrated position sensor

Wednesday, February 28th, 2018

Ben Katz writes: A while ago I added the hall effect encoder IC I've been using directly to the motor controller PCB.  The controller sits directly on the back of the motor (with a magnet added to the motor shaft), and the phase wires solder straight in.  I also have...

Tags:
Posted in PCBs, sensors | No Comments »

Weather logger with Losant and Amazon Alexa

Thursday, November 30th, 2017

Steve documented his experience experimenting with home weather logging: Like a million other people on the Internet, I’ve been experimenting with home weather logging. I roll my eyes at the phrase “Internet of Things”, but it’s hard to deny the potential of cheap networked sensors and switches, and a weather...

Tags: ,
Posted in Arduino, sensors, wireless | 2 Comments »

An open source rain and humidity sensor couple

Wednesday, August 2nd, 2017

Boris Landoni writes about a new open source rain and humidity sensor project: It detects humidity through two sensors which are to be used alternatively to let us know when there is water on the ground because it’s raining, or when the water level in a flowerpot is too low and...

Tags:
Posted in open source, sensors | 2 Comments »

MQ gas sensor correlation function against temperature and humidity

Thursday, July 6th, 2017

Davide Gironi writes: We have taken a look at the MQ sersor in this post here. As I said those sensor are electro-chemical. Accuracy of those sensor is not the best. Also they will react to many gases. It means that if you are trying to measure the ppm of...

Tags:
Posted in sensors | No Comments »

Lift: Millimeter-level finger tracking with Arduino and light sensors

Friday, April 21st, 2017

Researchers at the UC Irvine and the FX Palo Alto Laboratory present Lift, a visible light-enabled finger tracking: By projecting encoded visible patterns onto an object’s surface (e.g. paper, display, or table), and localizing the user’s fingers with light sensors, Lift offers users a richer interactive space than the device’s...

Tags: ,
Posted in Arduino, sensors | No Comments »

Bridge monitoring system using wireless sensor network

Thursday, April 13th, 2017

Zx Lee and his friends built the bridge monitoring system using wireless sensor network, that is available at github: Recently, I completed a mini project together with two of my friends. So I am going to take this opportunity to share the project that we have made, we named it...

Tags: ,
Posted in sensors, wireless | 1 Comment »

Making the Electronics for a 24GHz doppler motion sensor

Tuesday, April 4th, 2017

Limpkin has a nice write-up on his tiny CDM324 Doppler speed sensor: You may recall the article I wrote a couple of years ago about a nearly identical Doppler sensor, the HB100. While the HB100 is using a 10.525GHz frequency, this new module uses 24.125GHz! This has the main advantage...

Tags: ,
Posted in sensors | No Comments »

An open source Rain Sensor and controller

Thursday, January 26th, 2017

Boris Landoni from Open Electronics writes about a new open source Rain Sensor and controller: Designed to be coupled to an irrigation controller, a weather station or motorized curtains and rolling shutters, it shuts down a relay when rain is detected. Full details at Open Electronics project page.

Tags:
Posted in open source, sensors | 1 Comment »

A high-resolution sensor node

Saturday, December 31st, 2016

A high-resolution sensor node from JeeLabs: The JeeNode Zero is intended as sensor node in a Wireless Sensor Network. This requires: a sensor we can read out periodically, such as the BME280 being able to sleep with a very low current, as recently described the ability to run the node...

Tags:
Posted in sensors | No Comments »

Ultrasonic parking sensor

Tuesday, December 20th, 2016

An ultrasonic parking sensor project from Ch00ftech: After electing to use the PING))) sensor exactly as directed, I needed to build the rest of my circuit.  I wanted to build something robust that would mount nicely on the wall of my dad's garage.  Figuring that the sensor would likely need to...

Tags: , ,
Posted in sensors | No Comments »

Intel(r) Quark(tm) micrcontroller D2000 based Environmental sensors board

Friday, December 16th, 2016

Sergey Kiselev designed and built an Intel Quark D2000 micrcontroller based Environmental sensors board: This is a fairly small (51 x 51 mm) board, equipped with a low power Intel Quark D2000 microcontroller, and several sensors (accelerator, temperature, humidity, atmospheric pressure), as well as a mikroBUS compatible header and a Grove...

Tags: ,
Posted in sensors | 2 Comments »

CO2, temperature and humidity monitor

Tuesday, September 13th, 2016

An open source CO2 monitoring project from Roving Dynamics: The project described below uses a MH-Z16 or MH-Z19 CO2 sensor and a DHT-22 (or DHT-11 if less accuracy is required) to measure the Temperature and Humidity. It has a 4 line by 20 character LCD Display to show the current readings...

Tags: , , ,
Posted in PIC, sensors | No Comments »

Developing smart sensor solutions

Wednesday, May 11th, 2016

Ken Boak has published a new build, the MSP430i2041 bluetooth smart sensor board: One of our existing products at work, which I designed about 2 years ago, makes use of the STM32F373 microcontroller interfaced to an AD7767 24-bit sigma-delta ADC, to create a smart sensor. Whilst at the time of development, (Feb...

Tags: , ,
Posted in MSP430, sensors | No Comments »

Next Page »

Recent Comments

  • Edward Mallon: I've been oversampling those thermistors with the ADC and some pin-toggle noise for a while now, and that method is good. But lately I've been...
  • Marko: armature -> amateur
  • Crawford: Dibs,
  • bill: a sunny Sunday here
  • Iain NoSpam: A very random comment from a very random commenter