diff --git a/Affichage_lettre.lua b/Affichage_lettre.lua
deleted file mode 100644
index 6fe6a2c..0000000
--- a/Affichage_lettre.lua
+++ /dev/null
@@ -1,19 +0,0 @@
-client = mqtt.client("100", "mqtt.leizoour.fr", 8883, true)
-client:connect("student", "O99Rq8$F12NXzhL5caya")
-
--- CLK (clock) : D19 
--- DT  (data)  : D21
--- SW  (Bouton): D23
--- dir = direction de tournage de l'encodeur
--- counter = nombre de cran tourner
--- button = bouton poussoir
-
-function action(dir, counter, button)
-    cls()
-    lettre = string.char((counter % 26)+65)
-    --if button==1 then 
-    console("Choix lettre : "....lettre)
-end
-
-enc = encoder.attach(pio.GPIO19,pio.GPIO21,pio.GPIO23,action)
-
diff --git a/letter_display.lua b/letter_display.lua
new file mode 100644
index 0000000..b8087a4
--- /dev/null
+++ b/letter_display.lua
@@ -0,0 +1,19 @@
+--client = mqtt.client("100", "mqtt.leizoour.fr", 8883, true)
+--client:connect("student", "O99Rq8$F12NXzhL5caya")
+
+-- CLK (clock) : D15 
+-- DT  (data)  : D2
+-- SW  (Bouton): D4
+-- dir = direction de tournage de l'encodeur
+-- counter = nombre de cran tourner
+-- button = bouton poussoir
+
+function action(dir, counter, button)
+    cls()
+    lettre = string.char((counter % 26)+65)
+    --if button==1 then 
+    console("Choix lettre : "..lettre)
+end
+
+enc = encoder.attach(pio.GPIO15, pio.GPIO2, pio.GPIO4, action)
+
diff --git a/main.lua b/main.lua
index 8f24e06..3002d87 100644
--- a/main.lua
+++ b/main.lua
@@ -2,3 +2,5 @@ dofile("screen.lua")
 
 -- connecte l'écran sur les pins 18 et 19
 attachscreen(18, 19, 0x3C)
+
+dofile("letter_display.lua")