use new theme: stack

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "themes/eureka"]
 	path = themes/eureka
 	url = https://github.com/wangchucheng/hugo-eureka.git
+[submodule "themes/stack"]
+	path = themes/stack
+	url = https://github.com/CaiJimmy/hugo-theme-stack

README.md

@@ -1 +1,17 @@
 This website uses [my fork of the Hugo Eureka theme](https://github.com/angelajt/hugo-eureka).
+
+updating go
+
+```
+cd .goenv
+git fetch --all && git pull
+goenv install [newest version]
+goenv global [newest version]
+go version
+```
+
+updating hugo
+
+```
+go install -tags extended github.com/gohugoio/hugo@latest
+```

config/_default/config.yaml

@@ -2,8 +2,8 @@ baseURL: https://angelajt.com/
 title: Angela's Blog
 
 # Comment when installing using Hugo Modules
-theme: eureka
-# Uncomment when installing using Hugo Modules
+theme: stack
+# Uncomment eureka installing using Hugo Modules
 # theme: github.com/wangchucheng/hugo-eureka
 
 paginate: 3
@@ -40,4 +40,4 @@ taxonomies:
   author: authors
 
 build:
-  useResourceCacheWhen: always
+  useResourceCacheWhen: never

content/docs/lightsensor/usb.md

@@ -3,6 +3,7 @@ title: '2. Getting measurements through USB'
 date: 2021-06-15
 draft: false
 toc: true
+weight: 2
 ---
 
 ## a. Upload the code

content/docs/lightsensor/wifi.md

@@ -0,0 +1,85 @@
+---
+title: '3. Getting measurements through WiFi'
+date: 2021-06-16
+draft: false
+toc: true
+weight: 3
+---
+
+## a. Set up a Raspberry Pi with Home Assistant
+
+Follow [the Home Assistant installation instructions](https://www.home-assistant.io/installation/raspberrypi/). 
+
+## b. Install Mosquitto broker
+
+Follow [the Mosquitto installation instructions](https://github.com/home-assistant/addons/blob/master/mosquitto/DOCS.md).
+
+## c. Upload the code
+
+Replace the contents of `code.py` with the following code:
+
+```
+import time
+import ssl
+import json
+import alarm
+import socketpool
+import wifi
+import adafruit_minimqtt.adafruit_minimqtt as MQTT
+import board
+import adafruit_bh1750
+
+PUBLISH_DELAY = 5
+MQTT_TOPIC = "state/light-sensor"
+USE_DEEP_SLEEP = False
+
+i2c = board.I2C()
+sensor = adafruit_bh1750.BH1750(i2c)
+
+# Add a secrets.py to your filesystem that has a dictionary called secrets with "ssid" and
+# "password" keys with your WiFi credentials. DO NOT share that file or commit it into Git or other
+# source control.
+# pylint: disable=no-name-in-module,wrong-import-order
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+
+wifi.radio.connect(secrets["ssid"], secrets["password"])
+print("Connected to %s!" % secrets["ssid"])
+
+# Create a socket pool
+pool = socketpool.SocketPool(wifi.radio)
+
+# Set up a MiniMQTT Client
+mqtt_client = MQTT.MQTT(
+    broker=secrets["mqtt_broker"],
+    port=secrets["mqtt_port"],
+    username=secrets["mqtt_username"],
+    password=secrets["mqtt_password"],
+    socket_pool=pool,
+    ssl_context=ssl.create_default_context(),
+)
+
+print("Attempting to connect to %s" % mqtt_client.broker)
+mqtt_client.connect()
+
+while True:
+    fc = sensor.lux * 0.09290304
+    print("%.2f footcandles" % fc)
+    output = {
+        "footcandles": fc,
+    }
+    mqtt_client.publish(MQTT_TOPIC, json.dumps(output))
+
+    if USE_DEEP_SLEEP:
+        mqtt_client.disconnect()
+        pause = alarm.time.TimeAlarm(monotonic_time=time.monotonic() + PUBLISH_DELAY)
+        alarm.exit_and_deep_sleep_until_alarms(pause)
+    else:
+        last_update = time.monotonic()
+        while time.monotonic() < last_update + PUBLISH_DELAY:
+            mqtt_client.loop()
+```