Hikikomori Tamagotchi

Hikikomori is a software and hardware project to act like a digital pet of yours. You can think of it as a tamagotchi toy but it’s meant to be linked with your smart home system on Home Assistant . When you interact with your smart home or an automation is triggered the Hikikomori gets happier. Also it’s able to interact with Robonomics and Vara networks - that’s where the soul of the toy lives. Hikikomori sends its digital copy to Robonomics from time to time (here is code example).

https://github.com/airalab/hikikomori-tamagotchi/tree/main

There is a logic of tamagotchi in Vara network, it’s used to make computations of the level of happiness. Here’s the link to the tamagotchi smart contract from Vara network.

The code is tested with a simple scenario of increasing the happiness level in Vara by sending messages from Hikikomori (here is code example). Please have a look at the testing transaction and it’s output on Polkadot.js Portal:

Transaction hash in block № 11891410:

0xb07dc6d65cb2ab972e8bd372285a51897f0d54d6b05609367f54dcea166de56d

Requirements

• ESP-IDF v5.1.4
• Home Assistant
• Zigbee2MQTT

Flash ESP

Setup

Set settings in menuconfig:

idf.py menuconfig

• In Component config -> mbedTLS -> TLS Key Exchange Methods -> Enable pre-shared-key ciphersuites check Enable PSK based cyphersuite modes.

• In Component config -> ESP System Settings set Event loop task stack size to 4096.

Save and quit.

In sdkconfig set

CONFIG_FREERTOS_HZ=1000

Build and flash

Connect the esp viz USB and run

idf.py -p <PORT> build flash

Prepare Home Assistant

Zigbee2MQTT

In Zigbee2MQTT data folder create a file hikikomori.js with the following content

const {onOff, identify} = require('zigbee-herdsman-converters/lib/modernExtend');

const definition = {
    zigbeeModel: ['esp32c6'],
    model: 'esp32c6',
    vendor: 'Robonomics',
    description: 'Automatically generated definition',
    extend: [onOff({"powerOnBehavior":false}), identify()],
    meta: {},
};

module.exports = definition;

And add this to configuration.yaml:

external_converters:
    - hikikomori.js

Then restart Zigbee2MQTT.

Use

Initial Setup and Configuration

When you start Hikikomori for the first time, it will set up an Access Point. Follow these steps to configure it:

• Connect to the Access Point: Connect your device to the WiFi network broadcasted by Hikikomori. Open a web browser and navigate to http://192.168.4.1.

• Enter WiFi Credentials: Fill in the required information about your WiFi network. Save the settings.

Pairing Mode

After setting the WiFi credentials, Hikikomori will enter pairing mode. This allows you to connect it to Zigbee2MQTT. Follow the specific Zigbee2MQTT instructions to complete the pairing process.

Operation

Identify Button in Home Assistant:

Pressing the identify button will increase the happiness level of Hikikomori.

Left Button on ESP:

• Short Press: Toggles Hikikomori between sleep mode and wake mode.
• Long Press: Resets Hikikomori to its default settings.