A object for use by the artist duo https://www.frankenrobbert.com to be integrated into other works
Tested with:
- Raspberry Pi 4 & 3 with Raspbian buster version from 2021-03-04, previously tested with 2019-09-30
- Also tested with local PC (for USB printers)
- Adafruit ZJ-80 Serial thermal printers
- Cheaper USB thermal printers (e.g. here)
Physically connect printer. For Adafruit or ZJ-80 printer:
- Printer
Blackwire =GNDto Raspberry Pi pin6 - Printer
Yellowwire =TXto Raspberry Pi pin10 - Printer
Greenwire =RXto Raspberry Pi pin8 - Printer
VccPower pin to Raspberry Pi3.3vpin1 - (more detail at pinout.xyz)
Enable serial uart with config menu (or enable_uart=1 in /boot/config.txt):
raspi-config
Install the ZJ-80 drivers from Adafruit (or alternative klirichek):
sudo apt-get update
sudo apt-get install -y git cups wiringpi build-essential libcups2-dev libcupsimage2-dev
git clone https://github.com/adafruit/zj-58
cd zj-58/ && make && sudo ./install
Test print on Raspberry Pi v4 with serial printer (on v3 change serial0 to ttyAMA0):
sudo /usr/sbin/lpadmin -p ZJ-58 -E -v serial:/dev/serial0?baud=19200 -P /usr/share/cups/model/zjiang/ZJ-58.ppd
Copy the config file and change the admin password therein:
cp server.ini.example server.ini
Install required python libraries web.py pycups WSGIserver instaloader:
sudo apt-get install -y python3-
sudo python3 -m pip install -r requirements.txt
Run start script:
sudo ./start.sh
Starting as normal user will start server on port 8080, when starting with root the web UI starts on port 80
Access UI:
https://localhost:80/adminconfigurehttps://localhost:80/uploadmanually upoad image to print, if enabledhttps://localhost:80/see downloaded images
To start individual elements instead of using start.sh:
start_printer.shwill setup the printer. Setup persists so not required if already setup and configration has not changed. You can just test with:echo test | lp -d PRINTERstart_wifi.shwill setup wifi network. Setup persists. Check with./status.shsudo python3 server.py
-
Test ZJ-80 driver on Linux PC with USB printer:
sudo systemctl start cups sudo /usr/sbin/lpadmin -p ZJ-58 -E -v $URI -P /usr/share/cups/model/zjiang/ZJ-58.ppd
-
start_printer.shfor other printer testing and various lp management commands
- Information about Instagram rate limiting -- see also headers server returns on requests. Not sure what the restrictions are for un-registered apps -- 200 requests per hour?
- pip install error
fatal error: cups/cups.h: No such file or directoryrequired installingsudo apt-get install libcups2-dev
can try various commands found with:
stty -F /dev/serial0 19200
# print test page works
echo -en '\x12T' > /dev/serial0
# Change font settings failed:
echo -en '\x1D!\x00' > /dev/serial0 # small
echo -en '\x1D!\x11' > /dev/serial0 # large
echo -en '\x1B-\x01' > /dev/serial0 # small underline
echo -en '\x1B@' > /dev/serial0 # reset
echo "test" | lp -d PRINTER
# above fails, below works:
echo -e "test\n\n" > /dev/serial0
# may have require first sending? '\x1b\x37\x07\xff\x02' which changes heat?
# Alternatively this also works:
echo -e "test\n\n\n\n" > /tmp/print && lp -d PRINTER -o raw /tmp/print
Added try/except and hope this will no longer crash the instagram thread:
connection: [Errno -3] Temporary failure in name resolution')) [retrying; skip with ^C]
JSON Query to explore/tags/goawaysorrowoftheworld/: HTTPSConnectionPool(host='www.instagram.com',port=443): Max retries exceeded with url: /explore/tags/goawaysorrowoftheworld/?__a=1 (Caused byNewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0xb38f62b0>: Failed toestablish a new connection: [Errno -3] Temporary failure in name resolution')) [retrying; skip with ^C]
192.168.0.132:50074 - - [29/Oct/2019 06:07:23] "HTTP/1.1 POST /admin" - 303 See Other
192.168.0.132:50074 - - [29/Oct/2019 06:07:23] "HTTP/1.1 GET /admin" - 200 OK
192.168.0.132:50074 - - [29/Oct/2019 06:07:29] "HTTP/1.1 GET /admin" - 200 OK
JSON Query to explore/tags/goawaysorrowoftheworld/: HTTP error code 500. [retrying; skip with ^C]
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/home/pi/shrine_code/web/instagram.py", line 88, in run
self.get_latest_post()
File "/home/pi/shrine_code/web/instagram.py", line 48, in get_latest_post
for post in self._posts:
File "/usr/local/lib/python3.7/dist-packages/instaloader-4.2.9-py3.7.egg/instaloader/instaloader.py", line 833, in get_hashtag_posts
params)['graphql']['hashtag']['edge_hashtag_to_media']
File "/usr/local/lib/python3.7/dist-packages/instaloader-4.2.9-py3.7.egg/instaloader/instaloadercontext.py", line 372, in get_json
raise QueryReturnedNotFoundException("404 Not Found")
instaloader.exceptions.QueryReturnedNotFoundException: 404 Not Found