LedServoTests.ipynb

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    "### IO Tests\n",
    "\n",
    "These are some simple test routines to test the servo and Led connected to the AIY Voice Kit. This assumes the Led is on PIN_A and the servo is on PIN_B."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "20a7fbbb",
   "metadata": {},
   "outputs": [],
   "source": [
    "from gpiozero import LED, Servo\n",
    "from aiy.pins import PIN_A, PIN_B\n",
    "from time import sleep"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a25a0690",
   "metadata": {},
   "source": [
    "#### Creating servo and led objects\n",
    "\n",
    "It seems that when running as part of a Jupyter notebook, you cannot rerun this cell without restarting the kernel. So only run once 😎 Here you can change the pin assigment if you have different wiring."
   ]
  },
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   "cell_type": "code",
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   "source": [
    "servo = Servo(PIN_B)\n",
    "led   = LED(PIN_A)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4c8f244e",
   "metadata": {},
   "source": [
    "#### Blink the Led"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7ab12be9",
   "metadata": {},
   "outputs": [],
   "source": [
    "for i in range(3):\n",
    "    led.on()\n",
    "    sleep(0.5)\n",
    "    led.off()\n",
    "    sleep(0.5)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b6792b12",
   "metadata": {},
   "source": [
    "#### Turn the servo \n",
    "\n",
    "Commands are `servo.max()` for the maximum angle, `servo.min()` for the minimal angle and `servo.mid()` to move it to the middle (0). Alternatively you can set or query the angle using `servo.value` which ranges from -1 to 1."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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    "servo.mid()\n",
    "\n",
    "for i in range(-10,10):\n",
    "    servo.value=0.1*i\n",
    "    sleep(0.2)\n",
    "    \n",
    "servo.mid()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6d84b24f",
   "metadata": {},
   "source": [
    "#### Using it all togehter\n",
    "\n",
    "Here we turn the Led on while the servo moves - like a warning light!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "557119c7",
   "metadata": {},
   "outputs": [],
   "source": [
    "led.on()\n",
    "servo.mid()\n",
    "\n",
    "for i in range(-10,10):\n",
    "    servo.value=0.1*i\n",
    "    sleep(0.2)\n",
    "\n",
    "servo.mid()    \n",
    "led.off()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "5c1f6040",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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