diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
new file mode 100644
index 0000000..21dd997
--- /dev/null
+++ b/.github/workflows/build.yaml
@@ -0,0 +1,51 @@
+# see: https://github.com/marketplace/actions/test-compile-for-arduino
+
+name: build
+on: [push, pull_request]
+jobs:
+  build:
+    name: build for MCU
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Checkout Ethernet library
+      uses: actions/checkout@v3
+      with:
+          repository: m5stack/M5-Ethernet
+          ref: master
+          path: CustomLibrary_M5-Ethernet # must contain string "Custom"
+
+    - name: Checkout M5GFX library
+      uses: actions/checkout@v3
+      with:
+          repository: m5stack/M5GFX
+          ref: master
+          path: CustomLibrary_M5GFX # must contain string "Custom"
+
+    - name: Checkout M5Unified library
+      uses: actions/checkout@v3
+      with:
+          repository: m5stack/M5Unified
+          ref: master
+          path: CustomLibrary_M5Unified # must contain string "Custom"
+
+    - name: Checkout M5AtomS3 library
+      uses: actions/checkout@v3
+      with:
+          repository: m5stack/M5AtomS3
+          ref: master
+          path: CustomLibrary_M5AtomS3 # must contain string "Custom"
+
+    - name: Compile sketch
+      uses: ArminJo/arduino-test-compile@v3
+      with:
+        arduino-board-fqbn: esp32:esp32:m5stack-atomS3
+        platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
+        required-libraries: ReactESP@2.1.0,M5Atom@0.1.0
+        sketch-names: "*.ino"
+        sketch-names-find-start: bbn_*/*
+        extra-arduino-cli-args: "--warnings default"
+        set-build-path: true