KittenBot Grape:Bit ESP32-C3

A round board packed with IMU, buzzer, motor control, 4 RGB LEDs, and Jacdac.

Features

• Jacdac on pin 5 using Jacdac connector
• I2C on 6/7
• WS2812B RGB LED on pin 10 (use setStatusLight to control)

• Service: buttonA (button)
• Service: buttonB (button)
• Service: music (buzzer)
• Service: M1 (motor)
• Service: M2 (motor)

Stores

• https://www.kittenbot.cc/products/kittenbot-grapebit
• https://www.kittenbot.cc/products/kittenbot-grapebit-20-pack

Pins

pin name	hardware id	features
P1	GPIO2	analogIn, boot, io
P2	GPIO0	analogIn, io
LED	GPIO10	io
$services.buttonA[0].pin	GPIO21	$services.buttonA[0].pin, bootUart, io
$services.buttonB[1].pin	GPIO9	$services.buttonB[1].pin, boot, io
$services.music[2].pin	GPIO3	$services.music[2].pin, analogIn, io
$services.M1[3].pin1	GPIO1	$services.M1[3].pin1, analogIn, io
$services.M2[4].pin1	GPIO4	$services.M2[4].pin1, analogIn, debug, io
i2c.pinSCL	GPIO7	i2c.pinSCL, debug, io
i2c.pinSDA	GPIO6	i2c.pinSDA, debug, io
jacdac.pin	GPIO5	jacdac.pin, debug, io

DeviceScript import

You must add this import statement to load the pinout configuration for this device.

In Visual Studio Code, click the wand icon on the file menu and select "KittenBot Grape:Bit ESP32-C3".

import { pins, board } from "@dsboard/kittenbot_grapebit_esp32c3"

Driver

The accelerometer can be accessed through the KittenBotGrapeBit helper.

import { KittenBotGrapeBit } from "@devicescript/drivers"

const board = new KittenBotGrapeBit()
const acc = await board.startAccelerometer()

acc.reading.subscribe(vector => console.log(vector))

Firmware update

In Visual Studio Code, select DeviceScript: Flash Firmware... from the command palette.

Run this command line command and follow the instructions.

devicescript flash --board kittenbot_grapebit_esp32c3

• Firmware

Configuration

kittenbot_grapebit_esp32c3.json

{
    "$schema": "https://raw.githubusercontent.com/microsoft/devicescript-esp32/main/boards/esp32deviceconfig.schema.json",
    "id": "kittenbot_grapebit_esp32c3",
    "devName": "KittenBot Grape:Bit ESP32-C3",
    "productId": "0x38ccab8d",
    "$description": "A round board packed with IMU, buzzer, motor control, 4 RGB LEDs, and Jacdac.",
    "archId": "esp32c3",
    "url": "https://www.kittenbot.cc/products/kittenbot-grapebit",
    "$services": [
        {
            "name": "buttonA",
            "pin": 21,
            "service": "button"
        },
        {
            "name": "buttonB",
            "pin": 9,
            "service": "button"
        },
        {
            "name": "music",
            "pin": 3,
            "service": "buzzer"
        },
        {
            "name": "M1",
            "pin1": 1,
            "service": "motor"
        },
        {
            "pin1": 4,
            "name": "M2",
            "service": "motor"
        }
    ],
    "i2c": {
        "pinSCL": 7,
        "pinSDA": 6
    },
    "jacdac": {
        "$connector": "Jacdac",
        "pin": 5
    },
    "led": {
        "num": 4,
        "pin": 10,
        "type": 1
    },
    "pins": {
        "P1": 2,
        "P2": 0,
        "LED": 10
    }
}