I'm seeing 4 band value markings more often now than years ago. A 330 ohm could be orange orange black black. And 470 as yellow violet black black.B.Goode wrote: ↑Thu Aug 29, 2019 8:28 am
A 330 Ohm resistor will be marked Orange Orange Brown
A 470 Ohm resistor will be marked Yellow Violet Brown
Online 'calculators' are available, for example https://www.allaboutcircuits.com/tools/ ... alculator/
Docs in this area are currently being triaged and fixed as necessary.B.Goode wrote: ↑Thu Aug 29, 2019 7:46 am
But an 'intelligent guess' might lead us to the Ultrasonic Theremin project published by Raspberry Pi themselves, which unfortunately does contain a reference to Python3 (IDLE) here - https://projects.raspberrypi.org/en/pro ... theremin/5
That is a problem in itself even if not the documentation in this particular case. I have sent Feedback and flagged this post for Moderator attention.
MarkMalone wrote: ↑Thu Aug 29, 2019 5:17 pmWiring is checked, breadboard checked and resistors are confirmed as correct.
Still getting this message when trying the first bit of code which just measures the distance.
/usr/lib/python3/dist-packages/gpiozero/input_devices.py:997: DistanceSensorNoEcho: no echo received
warnings.warn(DistanceSensorNoEcho('no echo received'))
any help would be much appreciated, getting a bit despondent
Code: Select all
Python 3.7.3 (/usr/bin/python3) >>> %Run hrs04test.py 0.4533149914118337 0.4466732536674124 0.4468253178587747 0.4500790794082377 0.45268922843493553 0.44666450055193196 0.4515897666529895