In this presentation from the recent Notacon 10 conference in Cleveland, OH, Karin Halsey (aka meecie) provides a thought provoking roundup of the tech basics behind medical sensors and related devices. The talk focuses on working with basic supplies and … Read more
The new TI HealthTech fitness sensor guide provides info and application ideas on heart rate monitors, body worn fitness trackers, pulse oximeters and more. You can download your copy of the 49 page PDF from TI.
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. … Read more
Raj previously designed the Easy Pulse heart rate sensor. Now he informs us of an update: “I would like to inform you about the release of a new version of Easy Pulse sensor. The Easy Pulse sensor is designed for … Read more
If you missed it before, TI is offering the Chronos Watch as their current week’s deal at $38 (plus shipping.) The eZ430 deal includes the wireless enabled watch, CC1111 USB RF access point, and a CD containing software and documentation. … Read more
Scott Harden has designed an ECG/pulse oximeter combo project using LM324 op-amps. Scott describes, “This new project is fully documented and uses extremely common and cheap parts, all of which could be purchased at RadioShack. It serves as both an … Read more
When the cats away, the mice will play. But…. what’s the cat doing when YOU’RE away? That question led Tris of CantHack, a group of geeks from Canterbury, UK, to develop PiPurr. Tris explains, “PiPurr is a simple client-server solution. … Read more
Freescale Semiconductors has posted their Medical Applications User Guide. This 116 page PDF outlines the MCU, RF, sensor and display technologies offered with specific emphasis on their implementation in developing medical applications. Included are block diagrams of medical devices and … Read more
Parallax Propeller guru Phil Pilgrim has posted this IR sensor/discriminator project on the Parallax Propeller forums. “Almost everyone here is aware of the advantages of modulated IREDs for rejection of background IR fluctuations and line-frequency noise from artificial lighting. Typically, … Read more
Easy Pulse board used as biofeedback for virtual jogging: Sergej Stoetzer and two of his students just finished their virtual jogging project, where the Easy Pulse board has been used to provide a biofeedback to their system. They interfaced an … Read more
TI is making a limited number of samples available of their Field Transmitter: Pressure Sensor Solutions kit. The kit includes: • RCV420 – Precision 4mA to 20mA Current Loop Receiver • ADS1255 – 24 Bit, 30kSPS Very Low Noise Delta-Sigma … Read more
Doub shared his solenoid control project in the forum: I’m working on a solenoid control board, that would allow me to do sensorless position control (the algorithm is based on the varying inductance of the solenoid depending on the plunger … Read more
Raj I recently designed this tiny breakout board for Microchip’s 24LC512 EEPROM and MCP9802 temperature sensor devices, both of which support I2C protocol. This single board can be used for both sensing the ambient temperature and storing it. You can … Read more
This video of Luca Dentella demonstrates the IQS127D touch sensor and an Arduino: My Nixie clock won’t have any visible buttons, so I chose to use a touch sensor, that signals to Arduino when the user touches the clock. I … Read more
Here’s a project for remote monitoring of heart rate (and potentially other medical/sensor info) using Propeller chips and XBee modules. Nick Ernst has published his plans and code for the Corpsman Up Vitals Monitoring System on the Parallax website. The … Read more
The December 2012 issue of the Australian electronics magazine Silicon Chip features the USB Power Monitor. It uses a PIC18F45K80 to monitor the power consumption of a USB device. The board acts as a bridge between the host and the … Read more
Brian writes: I made a single circuit board version of Arduiniana’s famous “Reverse Geocache” box lately. It is based off a PIC instead of an Arduino and incorporates all of the required electronics into one package, saving money and packaging … Read more
Chris from PyroElectro writes informing us of his project to achieve Motor Control via Proximity Sensing. He describes, “In this article, we go step-by-step through the process of understanding, designing and building a system that uses an infrared proximity sensor … Read more
In this presentation from the ongoing 29C3 Chaos Communications Conference in Hamburg, Germany, Sean Bonner shares his experiences overcoming technical and bureaucratic obstacles while attempting radiation monitoring in the wake of the March, 2012 Fukushima Dai-Ichi nuclear power plant disaster. … Read more
If you have an IR capable webcam lying around, here’s an interesting open source project you may want to try. “The ITU Gaze Tracker is an open-source eye tracker that aims to provide a low-cost alternative to commercial gaze tracking … Read more
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