Hi, I also found snmp doesn’t provide you with the ink levels on the OfficeJet 3830.
Not sure how reliable it is at the moment, but I found that the ink percentage levels are exposed in an xml file which can be found on the printer:
ip_address_of_printer/DevMgmt/ConsumableConfigDyn.xml
You’ll find two entries (one for each cartridge)… and it looks something like:
<dd:ConsumablePercentageLevelRemaining>20</dd:ConsumablePercentageLevelRemaining>
In the end, I crudely wrote a python script to query the xml file and pull the values back via a sensor.
config i made in my sensors.yaml:
- platform: command_line
name: HP Printer Status
json_attributes:
- CartridgeLevel0
- CartridgeLevel1
- CartridgeColour0
- CartridgeColour1
command: 'python3 /config/get_hp_info.py'
value_template: '{{ value_json.state }}'
scan_interval: 300
The script I created was (this needs to be put in a file called get_hp_info.py and potentially given execute permissions via chmod). The file needs to be stored in the folder /config/.
#!/usr/bin/python3
import urllib.request
import urllib.parse
import xml.etree.ElementTree as ET
from urllib import request
id_req1 = urllib.request.urlopen('http://xxx.xxx.xxx.xxx/DevMgmt/ConsumableConfigDyn.xml')
id_req2 = urllib.request.urlopen('http://xxx.xxx.xxx.xxx/DevMgmt/ProductStatusDyn.xml')
id_req1_content = id_req1.read()
id_req2_content = id_req2.read()
output = ""
#
# Gather PRODUCT related information i.e. status
#
root2 = ET.fromstring(id_req2_content)
ns2='http://www.hp.com/schemas/imaging/con/ledm/productstatuscategories/2007/10/31'
for index, i in enumerate( root2.findall('.//{%s}StatusCategory' % ns2)):
if index == 1:
output = "{ \"state\":\"" + i.text + "\", "
# print( index,i.text)
#
# Gather CONSUMABLES related information i.e. cartridges (logic below assumes 2 cartridges - otherwise JSON will be badly formatted with missing ,'s)
#
root1 = ET.fromstring(id_req1_content)
ns1='http://www.hp.com/schemas/imaging/con/dictionaries/1.0/'
for index, i in enumerate( root1.findall('.//{%s}ConsumablePercentageLevelRemaining' % ns1)):
output += "\"CartridgeLevel"+str(index)+"\":\"" + i.text + "\", "
# print( index, i.text)
for index, i in enumerate( root1.findall('.//{%s}ConsumableLabelCode' % ns1)):
output += "\"CartridgeColour"+str(index)+"\":\"" + i.text + "\""
if index == 0:
output += ", "
# print( index, i.text)
output += "}"
print(output)
Hope thats useful, I know it’s a hack! 
