Electroteach

My setup in early 2019 of amateur radio from my car.
As of the first week in December 2019 I have an Anderson plug in the boot of my car which will make operations a bit easier.

A sample of the image produced by combining a laser pencil point diffraction grating with a night club type laser light.

So GPIO from xxx works on Pi 1, Pi 2, Pi 3: expand correctly for real types: see website.

GPIO is the low-level control and Pi4J nicely works with GPIO.
Bluej is supposed to work with Pi4J but on Pi 2 (above) I currently get unrecognised hardware errors.

i2c arduino youtube
I used this library libraries/liquid-crystal-i2-c this time.
Just to note the annotations on the photo .

here for vnc viewer

4-channel I2C-safe Bi-directional Logic Level Converter - BSS138
circuit

adafruit-4-channel-adc-breakouts
summary :

sudo apt-get update
sudo apt-get install -y python3 python3-pip python-dev
sudo pip3 install rpi.gpio


contact life matters

arduino sensor shield V4.0
Also marked on silk screen ge-th.com but no response from this site.

gtkterm example usage

gtkterm --port /dev/ttyUSB0