Qwiic Human Presence Sensor (AK9753) Hookup Guide

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Contributors: Englandsaurus
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Introduction

The AK9753 Human Presence sensor is a Qwiic enabled, 4-channel Nondispersive Infrared Sensor (NDIR). Each channel has a different field of view, so not only can the AK9753 detect a human, but it can also tell which direction the person is moving.

SparkFun Human Presence Sensor Breakout - AK9753 (Qwiic)

SparkFun Human Presence Sensor Breakout - AK9753 (Qwiic)

SEN-14349
$19.95
2

This hookup guide will show you how to get started taking basic reading from the sensor. We will cover both a serial output of readings as well as nice graph of the derivative of our readings from a single channel.

Required Materials

To get started, you'll need a microcontroller to, well, control everything.

SparkFun RedBoard - Programmed with Arduino

SparkFun RedBoard - Programmed with Arduino

DEV-13975
$21.50
50
SparkFun ESP32 Thing

SparkFun ESP32 Thing

DEV-13907
$23.50
69

Particle Photon (Headers)

WRL-13774
32 Retired

Raspberry Pi 3

DEV-13825
92 Retired

Now to get into the Qwiic ecosystem, the key will be one of the following Qwiic shields to match your preference of microcontroller:

SparkFun Qwiic HAT for Raspberry Pi

SparkFun Qwiic HAT for Raspberry Pi

DEV-14459
$6.50
5
SparkFun Qwiic Shield for Arduino

SparkFun Qwiic Shield for Arduino

DEV-14352
$7.50
9

SparkFun Qwiic Shield for Photon

DEV-14477
Retired

You will also need a Qwiic cable to connect the shield to your human presence sensor, choose a length that suits your needs.

Qwiic Cable - 100mm

Qwiic Cable - 100mm

PRT-14427
$1.50
Qwiic Cable - 50mm

Qwiic Cable - 50mm

PRT-14426
$0.95

Qwiic Cable - 200mm

PRT-14428
Retired

Qwiic Cable - 500mm

PRT-14429
1 Retired

Suggested Reading

If you aren't familiar with the Qwiic system, we recommend reading here for an overview.

Qwiic Connect System
Qwiic Connect System

We would also recommend taking a look at the following tutorials if you aren't familiar with them.

I2C

An introduction to I2C, one of the main embedded communications protocols in use today.

Qwiic Shield for Arduino & Photon Hookup Guide

Get started with our Qwiic ecosystem with the Qwiic shield for Arduino or Photon.