Fixed discord invite link

Ran black (py35), updated to pylint 2.x

.github/workflows/build.yml

@@ -40,9 +40,12 @@ jobs:
         source actions-ci/install.sh
     - name: Pip install pylint, black, & Sphinx
       run: |
-        pip install --force-reinstall pylint==1.9.2 black==19.10b0 Sphinx sphinx-rtd-theme
+        pip install --force-reinstall pylint black==19.10b0 Sphinx sphinx-rtd-theme
     - name: Library version
       run: git describe --dirty --always --tags
+    - name: Check formatting
+      run: |
+        black --check --target-version=py35 .
     - name: PyLint
       run: |
         pylint $( find . -path './adafruit*.py' )

README.rst

@@ -6,7 +6,7 @@ Introduction
     :alt: Documentation Status
 
 .. image:: https://img.shields.io/discord/327254708534116352.svg
-    :target: https://discord.gg/nBQh6qu
+    :target: https://adafru.it/discord
     :alt: Discord
 
 .. image:: https://github.com/adafruit/Adafruit_CircuitPython_DS1841/workflows/Build%20CI/badge.svg

examples/ds1841_blinka_simpletest.py

@@ -1,10 +1,6 @@
-from time import sleep
-import board
-import busio
-import adafruit_ds3502
-
-i2c = busio.I2C(board.SCL, board.SDA)
-ds3502 = adafruit_ds3502.DS3502(i2c)
+####### NOTE ################
+# This example is meant for use with Blinka/rasberry Pi due to the lack of analog pins.
+# CircuitPython board users should run the "ds1841_simpletest.py" example
 
 # WIRING:
 # 1 Wire connecting  VCC to RH to make a voltage divider using the
@@ -12,15 +8,23 @@ ds3502 = adafruit_ds3502.DS3502(i2c)
 
 # As this code runs, measure the voltage between ground and the RW (wiper) pin
 # with a multimeter. You should see the voltage change with each print statement.
+from time import sleep
+import board
+import busio
+import adafruit_ds1841
+
+i2c = busio.I2C(board.SCL, board.SDA)
+ds1841 = adafruit_ds1841.DS1841(i2c)
+
 while True:
-    ds3502.wiper = 127
+    ds1841.wiper = 127
     print("Wiper value set to 127")
     sleep(5.0)
 
-    ds3502.wiper = 0
+    ds1841.wiper = 0
     print("Wiper value set to 0")
     sleep(5.0)
 
-    ds3502.wiper = 63
+    ds1841.wiper = 63
     print("Wiper value set to 63")
     sleep(5.0)