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Archive for the ‘sensors’ Category

Flir Lepton thermal imaging sensor + gameduino 2

Friday, January 16th, 2015

Andrew Rossignol of The Resistor Network writes: I have successfully implemented a driver for the Lepton module and displayed frames on an LCD. This is all running on an STM32F4 processor on a Nucleo board. Attached to it is a Gameduino 2 which incorporates the FT800 graphics processor. I have...

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Posted in hacks, sensors | No Comments »

Reverse engineering a Verisure wireless alarm

Tuesday, December 9th, 2014

Here's an informative two-part series of posts over at FunOverIP detailing how to reverse engineer a Verisure wireless alarm. Part 1 details the beginning steps such as finding the modules radio frequency and modulation type, analyzing the chipset datasheet and using GNU Radio.

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Posted in reversed, RF, SDR, security, sensors, wireless | 2 Comments »

OV7670 image sensor data capture with Atxmega32E5 without using external FIFO

Monday, December 8th, 2014

Kehribar has interfaced a OV7670 camera module with Xmegae5 microcontroller without external FIFO: With current configuration, this system sends 20FPS 80x60 grayscale image data over 3Mbaud serial stream. There is 3 byte preamble {0xAA,0x55,0xAA} to indicate the start of a new image frame. Computer software / other MCU can use...

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Posted in project logs, sensors | No Comments »

Automatic plant watering system using AVR(Atmega16) Microcontroller

Thursday, November 20th, 2014

Here's an automatic watering system using AVR from Gadgetronicx: Primitive irrigation systems possess many drawbacks as it fails to conserve water and human energy. So introducing Automation in it can help us to overcome these drawbacks and pave way to conserve water. This can be done with a simple Soil moisture...

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Posted in AVR, sensors | 5 Comments »

Cat protector project

Wednesday, November 12th, 2014

Here's a cat protector project from LuckyResistor. Check out the project page from prototype to the final device: if you own a cat, you know even if your cat is well brought-up, laws are only valid as long you are at home or even in the same room. the goal of...

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Posted in Arduino, sensors | 3 Comments »

Bus Pirate v3 and LM75 temperature sensors

Wednesday, November 5th, 2014

Brixit writes, "This is a tiny reference for reading the temperature with an LM75a temperature sensor and a Bus Pirate v3 on a Linux computer."   Get an assembled Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.

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Posted in Bus Pirate, sensors | No Comments »

The smallest thermal imager

Monday, November 3rd, 2014

A small thermal imaging sensor from Mike's Electric Stuff: Info on using the Flir Lepton thermal image sensor used in the Flir One Iphone add-on. See videos for more info. Via Hacked Gadgets. Check out the video after the break. (more…)

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Posted in sensors | 3 Comments »

Using the AS5048A angle sensor

Wednesday, October 29th, 2014

Richard from Zoetrope wrote this blog article about a PCB to make using the AS5048A angle sensor really easy. He used dirtyPCBs for the board, and Zoetrope will be giving a few of them away. Via the contact form.

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Posted in Arduino, code, how-to, open source, PCBs, sensors | 2 Comments »

Sensor modules project

Monday, September 29th, 2014

Elpis shared his sensor modules in the project log forum: On the PCB you will find a clear indication for the voltage range, the sensor name for quick searching, the read and write I2C addresses together with the pin out labeling. On top of those, a graphic representation of the...

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Posted in project logs, sensors | 5 Comments »

Realtime GPS+GPRS tracking of vehicles using Arduino

Sunday, September 14th, 2014

Javier from CookingHacks writes: We made a

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Posted in Arduino, code, sensors | 1 Comment »

American pro football using RFID

Sunday, September 7th, 2014

With the start of the USA's pro football season the NFL has announced the use of RFID technology to enhance reporting of player performance data. The NFL partnered with Zebra Technologies, which is applying the same radio-frequency identification (RFID) technology that it has used the past 15 years to monitor...

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Posted in RFID, sensors | No Comments »

Tiny ATtiny Node

Monday, September 1st, 2014

Tiny ATtiny Node with temperature sensor project at Arduino Praxis: Tiny sensor board with ATtiny84 and RFM12B Transceiver. The size of the PCB is 25 x 30mm, sightly larger than a canadian quarter coin.

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Posted in Arduino, sensors | No Comments »

PIR sensor

Thursday, August 14th, 2014

An automatic PIR sensor project by Rajkumar Sharma of Electronics Lab: Project is based on Holtek’s IC HT7610A, which is a CMOS LSI chip designed for use in automatic PIR lamp, flash or buzzer control. It can operate in 3-wire configuration for relay applications. In our project we have used relay instead...

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Posted in security, sensors | No Comments »

Sound activated switch

Friday, July 25th, 2014

A sound activated switch project by Rajkumar Sharma of Electronics Lab: Clap switch/Sound-activated switch designed around op-amp, flip-flop and popular 555 IC. Switch avoids false triggering by using 2-clap sound. Clapping sound is received by a microphone, the microphone changes the sound wave to electrical wave which is further amplified...

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Posted in DIY, sensors | No Comments »

Reverse engineering a wireless soil moisture sensor

Thursday, July 24th, 2014

Ray Wang at Rayshobby has been working on reverse engineering a wireless soil moisture sensor. He writes, "At the Maker Faire this year I got lots of questions about soil moisture, which I knew little about. Recently I started learning about how to build my own soil sensor, and came...

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Posted in R-Pi, reversed, RF, sensors, wireless | No Comments »

Temperature and humidity measurement with DHT11

Monday, July 7th, 2014

  Ondrej Karas of DoItWireless writes: This article describes temperature and humidity measurement with DHT11 sensor connected to TR module. Circuit diagram is very simple. You need only power supply for sensor and one wire for data line. This line has to be “pull-uped” – sensor has open colector output.

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Posted in measurement, sensors, wireless | No Comments »

Build an Arduino based sonic pest repeller

Monday, June 9th, 2014

Just in time for Summer, here's a design for a sonic pest repeller. Carla Schroder developed this project which uses an Arduino Uno along with the WAVE shield and a Maxbotix ultrasonic rangefinder. This simple yet reportedly effective design senses critters nearing your garden plot and plays sound files (stored...

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Posted in Arduino, open source, sensors | 4 Comments »

Temperature compensation for an Arduino ultrasonic distance sensor

Friday, May 30th, 2014

Sverre Holm writes:Ultrasonic distance sensors can find the range out to 2-4 meters and are popular in e.g. robotics. Here I look at how the accuracy can be improved by compensating for the variation of speed of sound with temperature. It actually varies quite a lot in air and around...

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Posted in Arduino, sensors | 1 Comment »

Impact, vibration and ultrasound sensing with PVDF Piezo sensors

Friday, May 23rd, 2014

Shabaz over at Element14 writes: This post is about an interesting, low-cost sensor that doesn’t need much processing to use, and has some unique characteristics – a PVDF (polyvinylidene difluoride) Piezoelectric sensor. The sensors looks like a small strip of plastic, and can be used for detecting movement or vibrations even...

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Posted in sensors | No Comments »

A simple posture sensor

Thursday, April 24th, 2014

Here's a simple cure for your posture and the back pain blues, a posture sensor by Wingman: The simplest distance sensors are ultrasonic or infrared sensors. I went with a SR-HC04 because it is cheap and sufficiently precise. There are no special requirements to the controller so I am using an Attiny85. A...

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Posted in hacks, sensors | 10 Comments »

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Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
  • jose: Part removal described here is pure butchery, the cheapest hot air station will do a fast and clean job removing the QFP, heat air to...
  • Cody: Yes please