diff --git a/20221017183837-esphome.org b/20221017183837-esphome.org
index 05807a2..4cc0264 100644
--- a/20221017183837-esphome.org
+++ b/20221017183837-esphome.org
@@ -4,5 +4,5 @@
 #+title: ESPHome
 
 A platform for building firmware for [[id:d97fde4a-0e91-40f9-ac57-d0cd67295d14][ESP2866]] and ESP32 microcontrollers using
-YAML configuration files using a syntax similar to HomeAssistant that integrates
-easily with HomeAssistant installations.
+YAML configuration files using a syntax similar to Home Assistant that
+integrates easily with Home Assistant instances.
diff --git a/20221028233501-building_electronics_projects.org b/20221028233501-building_electronics_projects.org
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+++ b/20221028233501-building_electronics_projects.org
@@ -0,0 +1,14 @@
+:PROPERTIES:
+:ID:       2073a538-7846-4c4c-b385-58922d129cf7
+:END:
+#+title: Building electronics projects
+
+* Microcontrollers
+:PROPERTIES:
+:ID:       c412e81c-9271-4224-89b7-315a4b89968e
+:END:
+- The [[id:d97fde4a-0e91-40f9-ac57-d0cd67295d14][ESP2866]] and its successor, the ESP32, are very versatile and include
+  2.4Ghz WiFi radios.
+
+* Connecting wires
+- [[id:a5a28104-8ecb-42d9-899f-8caac37dec04][Using electrical connectors]]
diff --git a/20221028233746-using_electrical_connectors.org b/20221028233746-using_electrical_connectors.org
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@@ -0,0 +1,25 @@
+:PROPERTIES:
+:ID:       a5a28104-8ecb-42d9-899f-8caac37dec04
+:END:
+#+title: Using electrical connectors
+WAGO lever nuts (particularly the 221 models) are easy to use, work with solid
+core and stranded wire, and are transparent so you can tell that the connections
+have been made well. These seem better than twist-on wire nuts (mirettes), which
+are far cheaper but can be error prone as it is nearly impossible to tell
+whether the connection is good.
+
+* WAGO 221 connector :ATTACH:
+:PROPERTIES:
+:ID:       7b3d6d8a-357d-410a-b301-306803241e30
+:END:
+
+#+attr_org: :width 400
+[[attachment:_20221029_001058221-413-1.jpg]]
+
+* Wire nuts :ATTACH:
+:PROPERTIES:
+:ID:       2cf96703-9f9a-40b9-9491-5aed77359f3c
+:END:
+
+#+attr_org: :width 400
+[[attachment:_20221028_234847Array_of_twist-on_wire_connectors_aka_wire_nuts_in_different_sizes.jpg]]
diff --git a/20221029000251-home_automation.org b/20221029000251-home_automation.org
new file mode 100644
index 0000000..c667c7f
--- /dev/null
+++ b/20221029000251-home_automation.org
@@ -0,0 +1,12 @@
+:PROPERTIES:
+:ID:       4e6aacd1-ee81-4290-b1cd-797f9edcf826
+:END:
+#+title: Home automation
+* Commercial devices
+- Tuya devices tend to use [[id:d97fde4a-0e91-40f9-ac57-d0cd67295d14][ESP2866]] microcontrollers under the hood and can be
+  converted to use other firmwares by abusing their easy-mode wireless discovery
+  with [[https://github.com/ct-Open-Source/tuya-convert][tuya-convert]]. Unfortunately, newer Tuya firmwares render this method
+  unusable, and some devices no longer use ESPs.
+* DIY devices
+[[id:659c836d-0934-4496-a163-a51ccaccc117][ESPHome]] is a great platform for programming [[id:c412e81c-9271-4224-89b7-315a4b89968e][Microcontrollers]] in custom-built
+devices.
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