diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3d0ce40
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,30 @@
+name: PlatformIO CI
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install PlatformIO
+        run: pip install platformio
+
+      - name: Build esp32dev
+        run: pio run -e esp32dev
+
+      - name: Compile tests
+        run: pio test -e test --without-uploading --without-testing
diff --git a/.gitignore b/.gitignore
index 2c09404..9951a0a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,8 +11,8 @@ OpenConstructESP32
 .libdeps
 
 # PlatformIO
+.pio-venv/
 .travis.yml
-platformio.ini
 
 # Arduino
 *.hex
diff --git a/README.md b/README.md
index 8ae39cc..a682666 100644
--- a/README.md
+++ b/README.md
@@ -18,17 +18,17 @@ Arduino/ESP32 library that lets microcontrollers participate as **Plato shells**
 ```cpp
 #include <openconstruct-esp32.h>
 
-OpenConstructESP32 node("kitchen-sensor");
+OpenConstructESP32 node;
 
 void setup() {
-    node.begin("WiFiSSID", "WiFiPass");
-    node.registerDigitalSensor("door", 4);       // GPIO 4
-    node.registerAnalogSensor("light", 34);      // ADC on GPIO 34
-    node.registerTemperatureSensor("temp", 23);  // DHT22 on GPIO 23
+    node.begin("kitchen-sensor", "WiFiSSID", "WiFiPass");
+    node.registerSensor(4, "door", "digital");          // GPIO 4
+    node.registerSensor(34, "light", "analog");         // ADC on GPIO 34
+    node.registerSensor(23, "temp", "temperature");     // DHT22 on GPIO 23
 }
 
 void loop() {
-    node.loop();  // handles MQTT, mDNS, command parsing, sensor reporting
+    node.update();  // handles MQTT, mDNS, command parsing, sensor reporting
 }
 ```
 
diff --git a/examples/basic_shell/basic_shell.ino b/examples/basic_shell/basic_shell.ino
index 6fcd569..fbd4469 100644
--- a/examples/basic_shell/basic_shell.ino
+++ b/examples/basic_shell/basic_shell.ino
@@ -1,4 +1,4 @@
-#include <OpenConstructESP32.h>
+#include <openconstruct-esp32.h>
 
 // WiFi credentials - replace with your own
 const char* WIFI_SSID = "your_wifi_ssid";
diff --git a/library.json b/library.json
new file mode 100644
index 0000000..779a81c
--- /dev/null
+++ b/library.json
@@ -0,0 +1,23 @@
+{
+  "name": "OpenConstructESP32",
+  "version": "0.1.0",
+  "description": "Ultralight ESP32 edge node library for OpenConstruct networks",
+  "keywords": "openconstruct, esp32, mqtt, agent, sensor",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/SuperInstance/openconstruct-esp32.git"
+  },
+  "authors": [
+    {
+      "name": "SuperInstance",
+      "email": "dev@superinstance.com"
+    }
+  ],
+  "license": "MIT",
+  "homepage": "https://github.com/SuperInstance/openconstruct-esp32",
+  "dependencies": {
+    "knolleary/PubSubClient": "^2.8"
+  },
+  "frameworks": "arduino",
+  "platforms": "espressif32"
+}
diff --git a/library.properties b/library.properties
index 42cbec3..e279ed8 100644
--- a/library.properties
+++ b/library.properties
@@ -7,5 +7,4 @@ paragraph=OpenConstructESP32 enables ESP32 devices to participate as Plato shell
 category=Communication
 url=https://github.com/SuperInstance/openconstruct-esp32
 architectures=esp32
-depends=
-depends_on=PubSubClient
\ No newline at end of file
+depends=PubSubClient
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
new file mode 100644
index 0000000..a20edeb
--- /dev/null
+++ b/platformio.ini
@@ -0,0 +1,24 @@
+[platformio]
+src_dir = examples/basic_shell
+test_dir = test
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+lib_deps =
+    knolleary/PubSubClient @ ^2.8
+lib_extra_dirs =
+    .
+
+[env:test]
+platform = espressif32
+board = esp32dev
+framework = arduino
+lib_deps =
+    knolleary/PubSubClient @ ^2.8
+lib_extra_dirs =
+    .
+lib_ldf_mode = deep
+test_build_src = no
+test_framework = unity
diff --git a/src/OpenConstructESP32.cpp b/src/OpenConstructESP32.cpp
index 96f56f3..4a1702c 100644
--- a/src/OpenConstructESP32.cpp
+++ b/src/OpenConstructESP32.cpp
@@ -36,7 +36,8 @@ void OpenConstructESP32::registerSensor(int pin, const char* name, const char* t
     s.lastRead = 0;
 
     // Configure pin based on type
-    String sensorType = String(type).toLowerCase();
+    String sensorType = String(type);
+    sensorType.toLowerCase();
     if (sensorType == "digital") {
         pinMode(pin, INPUT);
     } else if (sensorType == "analog") {
@@ -150,7 +151,8 @@ void OpenConstructESP32::subscribeToCommands() {
 
 void OpenConstructESP32::readSensors() {
     for (auto& sensor : _sensors) {
-        String sensorType = sensor.type.toLowerCase();
+        String sensorType = sensor.type;
+        sensorType.toLowerCase();
         float value = 0.0;
 
         if (sensorType == "digital") {
diff --git a/src/TextSensor.cpp b/src/TextSensor.cpp
index 91c797a..540e60a 100644
--- a/src/TextSensor.cpp
+++ b/src/TextSensor.cpp
@@ -26,7 +26,8 @@ String describeMotion(float value) {
 }
 
 String describeSensor(const Sensor& sensor) {
-    String sensorType = sensor.type.toLowerCase();
+    String sensorType = sensor.type;
+    sensorType.toLowerCase();
     String description;
 
     if (sensorType == "digital") {
@@ -66,7 +67,8 @@ String formatSensorStatus(const std::vector<Sensor>& sensors) {
 
     String result = "";
     for (const auto& sensor : sensors) {
-        String sensorType = sensor.type.toLowerCase();
+        String sensorType = sensor.type;
+    sensorType.toLowerCase();
         String valueText;
 
         if (sensorType == "digital") {