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PIC24F Blood pressure monitor

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Digital blood pressure monitors come in handy for checking and monitoring blood pressure at home or in a hospital. This reference design from Microchip provide tips to build a low-cost, low-power, handheld or portable blood pressure meter with user interface using the system-on-a-chip PIC24FJ128GC010 MCU. The meter is used with an inflatable cuff for restricting blood flow and a pump to inflate the cuff, and measures both systolic and diastolic pressures, as well as the heart rate of the patient.

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16×32 RGB panel + Arduino Shield are now also available at Elecrow

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Our Chinese partner, Elecrow, now also carries our 16×32 RGB LED matrix panel + Arduino driver shield. They also offer worldwide shipping at much lower costs. The RGB matrix panel has 512 bright RGB LEDs arranged in 16 rows and 32 columns. Row and column driver circuits are built on the back side of the matrix panel. The data and control signal pins are accessible through a HUB75 (8×2 IDC) connector. It requires 12 digital I/O pins of Arduino Uno for full color control. The display module also comes with a RGB connector shield for Arduino Uno and necessary cables for easy wiring

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Easy Pulse mikro is now available on Tindie

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Easy Pulse mikro, a DIY pulse sensor with a mikroBus form factor, is now available at our Tindie Store. a new addition to our Easy Pulse Sensor series. Its mikroBus form factor enables easy integration with Microchip’s MPLAB Xpress board as well as with mikroElektronika‘s numerous development boards. Similar to our original Easy Pulse V1.1 and Easy Pulse Plugin, it also operates on the principle of transmittance photoplethysmography applied to fingertip using infrared sensors. Easy Pulse mikro provides all necessary instrumentation and amplification on board to detect the cardiovascular pulse signal from the fingertip. The output is a nice and clean

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ESP8266 temperature and humidity logger with deep sleep enabled

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ESP8266 has made it possible for hobbyists and makers to develop IoT applications in simple and inexpensive ways. This article shows an example of making a very simple temperature and humidity logger using ESP8266 that uploads the data directly to a cloud service, such as ThingSpeak, and allows to visualize the data in real time. The ESP8266 module used in this project is WeMOS’ D1 Mini board. Because the D1 board comes with the CH340G USB to UART converter module and a micro USB connector preinstalled on board, all you need is an USB cable to upload your program to the ESP8266. For temperature and

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16×32 RGB Matrix Panel Driver Shield Revision 1

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Our RGB matrix panel driver shield for Arduino Uno has been slightly revised. The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already built on the back side of these matrix panel. The data and control signal pins for driving rows and columns are accessible through the HUB75 connector. It requires 12 digital I/O pins of Arduino Uno for full color control. The revised version also has a slide

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