[SOLVED] "Error" when running Ultrasonic_And_Relay.py

amanda.anicete · May 7, 2018, 4:13am

Hi,
So I’m trying to follow the tutorial that the GrovePi Kit came with and I tried running the ultrasonic and relay code.

github.com

DexterInd/GrovePi/blob/master/Projects/Ultrasonic_And_Relay/Ultrasonic_And_Relay.py

# GrovePi + Grove Ultrasonic Ranger
# http://www.seeedstudio.com/wiki/Grove_-_Ultrasonic_Ranger

# This is an project using the Grove Ultrasonic Ranger and Relay from GrovePi start kit
# 
# In this project, the ultrasonic can figure out the distance of object in front, 
# when object close to it within 10cm, the relay will turn on

'''
## License

The MIT License (MIT)

GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
Copyright (C) 2017  Dexter Industries

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

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However, when I ran it, it just showed “Error” repeatedly down my terminal.

My ultrasonic sensor also gets REALLY warm after a few seconds when running the code.
Is there a bug with the code or is my ultrasonic ranger faulty?

RobertLucian · May 7, 2018, 9:39pm

Hi @amanda.anicete,

It might be that you don’t have the firmware flashed to your GrovePi. Do the following things in a terminal:

cd /home/pi/Dexter/GrovePi/Firmware
bash firmware_update.sh

This will flash the firmware onto your GrovePi.

After you do this, please give this script another go and see if it works.

Thank you!

amanda.anicete · May 8, 2018, 2:47pm

It worked! Thank you very much!

RobertLucian · May 10, 2018, 11:46am