ECG ON TEENSY | Needed help in circuit diagram?

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gptshubham595
 
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Joined: Mon Mar 28, 2022 4:04 am

ECG ON TEENSY | Needed help in circuit diagram?

Post by gptshubham595 »

Hi,
I was working on a thesis project on a portable ECG device, I checked these

MY CONFUSION: https://i.stack.imgur.com/CVJ1f.png & https://i.stack.imgur.com/qoMJl.jpg

CIRCUIT: https://raw.githubusercontent.com/gaodi ... ograph.jpg

VIDEO: https://www.youtube.com/watch?v=VUxi9EeDWB4

https://courses.cs.washington.edu/cours ... l6/l6.html
https://github.com/gaodingpan/ECG-on-Teensy
https://www.instructables.com/Log-High- ... Over-a-Mo/

So it was basically biopotential->Amplifier->logging->displaying using Teensy(Programmable chip), Adafruit(Bluetooth Module), SPI LCD Screen, and resistors and capacitors.

I developed and assembled all except Teensy, adafruit, SPI LCD screen, as I don't have circuit on how to connect output to these 3 devices.

Can anyone share some other resources it would be very much valuable.

Thank You

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tepalia02
 
Posts: 104
Joined: Sun Apr 24, 2022 6:53 am

Re: ECG ON TEENSY | Needed help in circuit diagram?

Post by tepalia02 »

Hi, which Teensy board you're using? Kindly share the link.

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michaelmeissner
 
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Joined: Wed Aug 29, 2012 12:40 am

Re: ECG ON TEENSY | Needed help in circuit diagram?

Post by michaelmeissner »

Note, the Circuit Playground forum is probably not the best forum to post this to. I suspect the 'other Adafruit products' forum might find more people with answers (the Circuit Playground is a circular microprocessor that is meant to be a wearable microprocessor).

The following document tells how to hook up the Teensy: Basically pins 0 and 1 are connected to the serial UART, which is connected to the bluetooth communications device with resistors. The bluetooth device also needs a ground and 3.3v connection.

Pin 2 is set low to act as a ground connected to the LED, and pin 3 is connected to a 470 ohm resistor and then a LED (light emiting diode).

Pins 10, 11, 12, 13 are the SPI pins that are connected to the micro-SD drive. Pin 10 is the CS pin, pin 13 is SCLK, pin 12 is MOSI, and pin 11 is MISO. You will need to connect 5v and ground to the micro SD card.

The directions mention getting SdFat. You don't have to do that now, since SdFat is incorporated in the current Teensy support.

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