Displayotron HAT Blank Screen No response


#1

Dear Forum,

I have two Displayotron HATS. I had one working at one time. Currently, neither of them are responsive after installing three different ways on either Raspberry Pi Zero W or Raspberry Pi 2. Each have been attempts with either Stretch or Jessie.

I have tried to install through Pimoroni Dashboard and the one-liner starting with curl -sS. On all these attempts, the Raspberry Pi operates normally with several different programs functioning successfully. Under all these attempts, the device has no output and screen is blank. I must be missing something.

The following is a session output to explain the problem:
Please help, Thank You, Frank.

pi@raspberrypi:~ ls adafruit-pitft.sh Downloads Pictures python_games Desktop install-piface-real-time-clock.sh Pimoroni Templates Documents Music Public Videos pi@raspberrypi:~ cd Pimoroni
pi@raspberrypi:~/Pimoroni ls displayotron pi@raspberrypi:~/Pimoroni cd displayotron/examples/dothat/basic
pi@raspberrypi:~/Pimoroni/displayotron/examples/dothat/basic ls backlight.py graph.py hello_world.py ipaddr.py room.py touch.py pi@raspberrypi:~/Pimoroni/displayotron/examples/dothat/basic python touch.py
Traceback (most recent call last):
File “touch.py”, line 6, in
import dothat.lcd as lcd
File “/usr/local/lib/python2.7/dist-packages/dothat/lcd.py”, line 6, in
lcd = st7036.st7036(register_select_pin=25, reset_pin=12)
File “/usr/lib/python2.7/dist-packages/st7036.py”, line 42, in init
self.spi.open(0, spi_chip_select)
IOError: [Errno 2] No such file or directory
pi@raspberrypi:~/Pimoroni/displayotron/examples/dothat/basic python hello_world.py Traceback (most recent call last): File "hello_world.py", line 3, in <module> import dothat.lcd as lcd File "/usr/local/lib/python2.7/dist-packages/dothat/lcd.py", line 6, in <module> lcd = st7036.st7036(register_select_pin=25, reset_pin=12) File "/usr/lib/python2.7/dist-packages/st7036.py", line 42, in __init__ self.spi.open(0, spi_chip_select) IOError: [Errno 2] No such file or directory pi@raspberrypi:~/Pimoroni/displayotron/examples/dothat/basic python backlight.py
Traceback (most recent call last):
File “backlight.py”, line 7, in
import dothat.lcd as lcd
File “/usr/local/lib/python2.7/dist-packages/dothat/lcd.py”, line 6, in
lcd = st7036.st7036(register_select_pin=25, reset_pin=12)
File “/usr/lib/python2.7/dist-packages/st7036.py”, line 42, in init
self.spi.open(0, spi_chip_select)
IOError: [Errno 2] No such file or directory
pi@raspberrypi:~/Pimoroni/displayotron/examples/dothat/basic $


#2

The above post (authored by me) refers to a response to a previous post that was closed. This post (on this forum) was entitled:
“Experimental support warning with Raspbian Stretch”
and may be directly viewed at:

I wondered if this post explained my problems / issues for Displayotron HAT not working Thank you, Frank