DIGILENT Pmod LS1

The Pmod HAT Adapter  (144-8419)  makes it easy to connect Pmods to a Raspberry Pi. It supports plug-and-play functionality, only requiring that the host Raspberry Pi is booted with the Pmod HAT attached. The Pmod HAT has three 2×6 Pmod ports and provides access to additional I/O available via the Raspberry Pi 40-pin GPIO connector. Designed in collaboration with RS Components, users can take advantage of example Python libraries and demo tutorials hosted on DesignSpark.

The Pmod LS1 (136-8060) allows users to receive signals from multiple optical sensors, such as the popular combination of IR LED with an IR sensor used in line-following robots.

Getting Started

Start off by typing the following commands on the terminal:

sudo apt-get update

sudo apt-get dist-upgrade

sudo apt-get install -y build-essential git libusb-1.0-0-dev libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compiler libatlas-base-dev git automake byacc lsb-release cmake libgflags-dev libgoogle-glog-dev liblmdb-dev swig3.0 graphviz libxslt-dev libxml2-dev gfortran python3-dev python3-pip python3-setuptools python3-markdown python3-pillow python3-yaml python3-pygraphviz python3-h5py python3-nose python3-lxml python3-matplotlib python3-numpy python3-protobuf python3-dateutil python3-skimage python3-scipy python3-six python3-networkx libfreetype6-dev libjpeg-dev python3-gst-1.0 python3-picamera

sudo pip3 install pyserial

sudo pip3 install designspark.pmod

We have to turn on the serial function of the Raspberry Pi too

sudo raspi-config

>5 Interfacing Options
>6 serial
>Would you like a login shell to be accessible over serial?
>No
>Would you like the serial port hardware to be enabled?
>Yes

This program code means that we have to insert the Pmod LS1 into the Pmod HAT Adapter JAA slot. The JAA slot means that the upper 6-pin in slot JA.

if __name__ == '__main__':
    
    LS1 = createPmod('LS1','JAA')
    time.sleep(0.1)

Plug the Pmod LS1 into the JAA slot as shown below.

The following is the code to get all the 4 channel Infra-red sensor data and print it out.

try:
        while True:
            print(LS1.GetAllStatus())
            time.sleep(0.5)
    except KeyboardInterrupt:
        pass
    finally:
        LS1.cleanup()

the LS1.GetAllStatus is the function that gets all the data from the IR sensor.

sudo python3 /home/pi/Desktop/DesignSpark/example/LS1_example.py

or 

sudo python /home/pi/Desktop/DesignSpark/example/LS1_example.py