09-2 Plot serial data read from Arduino.ipynb

{"nbformat":4,"nbformat_minor":0,"metadata":{"colab":{"name":"09-2 Plot serial data read from Arduino.ipynb","provenance":[],"collapsed_sections":[],"authorship_tag":"ABX9TyPu/bA/CWG32gMyNUSbGiQF"},"kernelspec":{"name":"python3","display_name":"Python 3"}},"cells":[{"cell_type":"code","metadata":{"id":"mzRHrxYQ_VFY"},"source":["# Plot serial data read from Arduino\n","# author: Gressling, T\n","# license: MIT License # code: github.com/gressling/examples\n","# activity: single example # index: 9-2"],"execution_count":null,"outputs":[]},{"cell_type":"code","metadata":{"id":"Y2-x0vC6_cWp"},"source":["# ----- ARDUINO CODE ----- BEGIN\n","\n","#include \"DHT.h\"\n","#define DHTPIN 2\n","#define DHTTYPE DHT11\n","DHT dht(DHTPIN, DHTTYPE);\n","void setup() {\n"," Serial.begin(9600);\n"," dht.begin();\n","}\n","void loop() {\n"," delay(2000);\n"," Serial.print(dht.readTemperature());\n"," Serial.print(\" , \");\n"," Serial.println(dht.readHumidity());\n","}\n","\n","# ----- ARDUINO CODE ----- END\n"],"execution_count":null,"outputs":[]},{"cell_type":"code","metadata":{"id":"df7l1bio_k-B"},"source":["import serial\n","import numpy\n","import matplotlib.pyplot as plt\n","from drawnow import *\n","%matplotlib auto\n","tempF=[]\n","humidity=[]\n","arduinoData=serial.Serial('COM5',9600)\n","plt.ion()\n","def makeFig():\n"," plt.plot(tempF,'ro-')\n"," plt.show\n","\n","while True:\n"," while arduinoData.inWaiting()==0:\n","  pass\n"," arduinoString=arduinoData.readline()\n"," # readline result are bytes that have to be byte splitted\n"," dataArray=arduinoString.split(b',')\n"," temp=float(dataArray[1])\n"," H=float(dataArray[0])\n"," tempF.append(temp)\n"," humidity.append(H)\n"," drawnow(makeFig)\n"," plt.pause(.000001)"],"execution_count":null,"outputs":[]}]}