🦉🔮Adafruit sale all weekend long – use the code ADATHX for 15% off! 🔮🦉
0

Hacking UART to an Omron RS8 Blood Pressure Sphygmomanometer

This is an interesting read from MOAM Industries and might enlighten you to consider ways of finding serial data where it seemingly doesn’t already exist.

Initially we considered our own interface for a blood pressure cuff. Just run the pump and take the readings with our own processor and pressure sensor, how hard can it be. Rather difficult it seems, the processing and knowledge required to develop a device to perform even rudimentary readings would have completely blown the time budget. Instead we looked to hack an existing device, enter the Omron RS8.

Omron+RS8+product+image

Working through the ICs on the top of the PCB and searching for data sheets showed the main IC to be something somewhat obscure and difficult to source information for. A Similar scenario again for the NFC chip, little available information in data sheets or examples on the web. Reviewing the product documentation gave the impression the NFC interface was designed to upload logs and not stream real time data. The rear side of the PCB however held promise. A separate IC was used to drive the segmented LCD display built into the housing, the BU9795A. Whilst still an obscure component a data sheet was available and it listed an SPI interface with a nice clear protocol.

download

download

Read more.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 25,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Pipe cleaner purposes

Electronics — Diode Test Current

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 6 released and projects galore! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — CO2 Cuckoo Clock, Wippersnapper, and more!

Microsoft MakeCode — Making a Smart LEGO Ferris Wheel!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week 11/24/20 Adafruit ST25DV16K I2C RFID EEPROM Breakout – STEMMA QT / Qwiic @adafruit @johnedgarpark #adafruit #newproductpick

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.