diff --git a/+keybindings.el b/+keybindings.el
index c5913e9..f215b85 100644
--- a/+keybindings.el
+++ b/+keybindings.el
@@ -34,3 +34,10 @@
 ;; Keybindings for citar
 (map! :leader :n "n B" #'citar-open-files
       :desc "Open associated PDF with bibliography entry")
+;; Keybindings for PlatformIO
+(map! :after platformio-mode
+      :map platformio-mode-map
+      (:leader
+       :desc "Compile the project" "c c" #'platformio-build
+       :desc "Upload the project" "c u" #'platformio-upload
+       :desc "Monitor the serial console" "c m" #'platformio-device-monitor))
diff --git a/+ui.el b/+ui.el
index 14f88d5..34e36d8 100644
--- a/+ui.el
+++ b/+ui.el
@@ -58,3 +58,5 @@
                :action =wallabag) t)
 ;; Decrease size of icons in the modeline
 (setq all-the-icons-scale-factor 1.0)
+;; Increase size of the PlatformIO compilation buffer
+(set-popup-rule! "*platformio*" :size 0.25 :vslot -4 :select t :quit nil :ttl 0)
diff --git a/config.el b/config.el
index 022cbdb..3d511d4 100644
--- a/config.el
+++ b/config.el
@@ -138,3 +138,8 @@
 (setq native-comp-deferred-compilation nil)
 (after! (doom-packages straight)
   (setq straight--native-comp-available t))
+;; Use PlatformIO for Arduino development
+(use-package! platformio-mode
+  :after cc-mode
+  :config
+  (add-hook! 'c++-mode-hook (platformio-conditionally-enable)))
diff --git a/packages.el b/packages.el
index bc04d04..eebd761 100644
--- a/packages.el
+++ b/packages.el
@@ -26,3 +26,5 @@
 (package! asoc :recipe (:host github :repo "troyp/asoc.el"))
 (package! doct :recipe (:host github :repo "progfolio/doct"))
 (package! org-capture-ref :recipe (:host github :repo "yantar92/org-capture-ref"))
+;; Arduino development
+(package! platformio-mode)