Arduino People Counter

Hardware

• 1x Arduino MKR WiFi 1010
• 2x TFMini Lidar Sensor
• 2x female to female jumper cable

Setup

Sensor 1 is connected to pin 0 (TX, white cable) and pin 1 (RX, green cable). Sensor 2 is connected to pin ~2 (TX, white cable) and pin ~3 (RX, green cable).

You could also connected one of the sensors to the out-of-the-box TX and RX pins (13 and 14). I connected them this way to have a cleaner setup.

Connect the red wire of each sensor to 5v and the black wire of each sensor to GND.

Dependencies

You can find the required libraries in the Arduino library manager.

• wiring_private.h (for giving the pins the required functionality, already included by default)
• ArduinoHttpClient.h (library to make HTTP requests, already included by default)
• WiFiNINA.h (WiFi library for the MKR WiFi 1010 board)
• Scheduler.h (Adds support for multiple operations at once)

Secrets

#define SECRET_SSID "yourWiFiSSid"
#define SECRET_PW "yourWifiPassword"
#define SECRET_ENDPOINT "/api/v1/your-api-endpoint"
#define SECRET_HOST "your-api-host.com"
#define SECRET_PORT 80 // Your API port, use 80 for HTTP and 443 for HTTPS
#define SECRET_AP_SSID "peopleCounter"

The WiFi SSID and password is changeable via the config interface (see "Configuration").

Use the WiFiSSLClient instead of the WiFiClient if your API endpoint is HTTPS only.

Configuration

To configure the counter start the device with obscured sensors. The counter will enter into config mode and open a WiFi access point called "peopleCounter".

Connect to the access point and open http://192.168.4.1 in your browser.

Set your WiFi SSID and password for the run mode.