diff --git a/README.md b/README.md
index cc80caf..6a5b94c 100644
--- a/README.md
+++ b/README.md
@@ -151,10 +151,10 @@ The project requires the following libraries:
 
 ### Building
 
-Build the firmware:
+Build the firmware for specific chip:
 
 ```bash
-./ctl.sh build
+./ctl.sh build target esp01_1m
 ```
 
 ### Flashing
@@ -162,7 +162,7 @@ Build the firmware:
 Flash firmware to a connected device:
 
 ```bash
-./ctl.sh flash
+./ctl.sh flash target esp01_1m
 ```
 
 ### Over-The-Air Updates
@@ -170,13 +170,13 @@ Flash firmware to a connected device:
 Update a specific node:
 
 ```bash
-./ctl.sh ota update 192.168.1.100
+./ctl.sh ota update 192.168.1.100 esp01_1m
 ```
 
 Update all nodes in the cluster:
 
 ```bash
-./ctl.sh ota all
+./ctl.sh ota all esp01_1m
 ```
 
 ### Cluster Management
diff --git a/ctl.sh b/ctl.sh
index 92e6a85..4fc0a16 100755
--- a/ctl.sh
+++ b/ctl.sh
@@ -9,26 +9,40 @@ function info {
 }
 
 function build {
-    echo "Building project..."
-    pio run
+    function target {
+        echo "Building project for $1..."
+        pio run -e $1
+    }
+    function all {
+        target esp01_1m
+        target d1_mini
+    }
+    ${@:-all}
 }
 
 function flash {
-    echo "Flashing firmware..."
-    pio run --target upload
+    function target {
+        echo "Flashing firmware for $1..."
+        pio run --target upload -e $1
+    }
+    function all {
+        target esp01_1m
+        target d1_mini
+    }
+    ${@:-all}
 }
 
 function ota {
     function update {
-        echo "Updating node at $1"
+        echo "Updating node at $1 with $2... "
         curl -X POST \
-            -F "file=@.pio/build/esp01_1m/firmware.bin" \
+            -F "file=@.pio/build/$2/firmware.bin" \
             http://$1/api/node/update | jq -r '.status'
     }
     function all {
         echo "Updating all nodes..."
         curl -s  http://$API_NODE/api/cluster/members | jq -r '.members.[].ip' | while read -r ip; do
-            ota update $ip
+            ota update $ip $1
         done
     }
     ${@:-info}
diff --git a/platformio.ini b/platformio.ini
index 96d5ed1..7b9a24f 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -8,6 +8,16 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
+[platformio]
+default_envs = esp01_1m
+
+[common]
+monitor_speed = 115200
+lib_deps = 
+    esp32async/ESPAsyncWebServer@^3.8.0
+    bblanchon/ArduinoJson@^7.4.2
+    arkhipenko/TaskScheduler@^3.8.5
+
 [env:esp01_1m]
 platform = platformio/espressif8266@^4.2.1
 board = esp01_1m
@@ -15,9 +25,16 @@ framework = arduino
 upload_speed = 115200
 monitor_speed = 115200
 board_build.partitions = partitions_ota_1M.csv
-board_build.flash_mode = dout          ; ESP‑01S uses DOUT on 1 Mbit flash
+board_build.flash_mode = dout          ; ESP‑01S uses DOUT on 1 Mbit flash
 board_build.flash_size = 1M
-lib_deps = 
-    esp32async/ESPAsyncWebServer@^3.8.0
-    bblanchon/ArduinoJson@^7.4.2
-    arkhipenko/TaskScheduler@^3.8.5
+lib_deps = ${common.lib_deps}
+
+[env:d1_mini]
+platform = platformio/espressif8266@^4.2.1
+board = d1_mini
+framework = arduino
+upload_speed = 115200
+monitor_speed = 115200
+board_build.flash_mode = dio           ; D1 Mini uses DIO on 4 Mbit flash
+board_build.flash_size = 4M
+lib_deps = ${common.lib_deps}
\ No newline at end of file