#Hackpack blog: MineGraph

How to create a real time graph using the sense hat emulator and Minecraft on Raspberry Pi

Firstly if you are just looking for the code: here it is https://raw.githubusercontent.com/ncscomputing/Hackpack/Volume-5/MinegraphSHEmuv1.py

Here is a straight copy of the code:

"""
Written by @ncscomputing v2 to work  with Pi Sense hat emulator on Pi not web based.
"""

import mcpi.minecraft as minecraft
import mcpi.block as block
import time
import random
from sense_emu import SenseHat

sense = SenseHat()

mc = minecraft.Minecraft.create()
orx,ory,orz = mc.player.getPos()

mc.postToChat("Start Graph")

blockTypeList=[35,45,3,4,5,6]
DataStreamList = []

DataStreamCount= 0

def BuildDataBlock():
    temp = int(sense.temp)
    DataStreamList.append(temp)
    orx,ory,orz = mc.player.getPos()
    block = random.choice(blockTypeList)

    for i in range (0,temp):
        x,y,z = mc.player.getPos()
        mc.setBlock(x,i,z,block)
    mc.player.setPos(orx,ory,orz+1)
    msg = "Temp currently is:",temp 
    print(msg)
        
while True:
    BuildDataBlock()
    time.sleep(4)

Here is a simple intro to how to get it to work:

It works with the sensehat emulator which is included by default on the Raspian OS. You can find it in Menu > Programming > Sense Emu.
Once that is loaded open Minecraft Pi which can be accessed Menu > Games > Minecraft
Create a new world and then using the space bar position the character up in the sky. If you press space down for about 5-6 seconds that should be high enough.
Open Python 3 Menu > Programming > Python3 and open the Python Code above and press F5 
The code should then run. 
It should start drawing bars as above. If you are not happy turn it off and retry. The temp is adjustable by the SenseHatEmu interface their is a temp slider adjust it up or down accordingly. 
N.B. The code is not perfect but it does work last time I tested. 

Enjoy :)

Over  

Chris Penn