diff --git a/flake.nix b/flake.nix
index c2fa488..0bddadf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,7 +13,7 @@
           pname = "go-orange";
           version = "0.0.1";
           src = ./.;
-          vendorHash = null;
+          vendorHash = "sha256-gDM2R78BqQmNK8h2f5pLSA8ddbjMwMpjHPPTMnKmbwU=";
         };
       in {
         packages = { default = default; };
diff --git a/go.mod b/go.mod
index 0b71dfb..676cfae 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,8 @@
 module go-orange
 
 go 1.22
+
+require (
+	periph.io/x/conn/v3 v3.7.0 // indirect
+	periph.io/x/host/v3 v3.8.2 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..25f9941
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,4 @@
+periph.io/x/conn/v3 v3.7.0 h1:f1EXLn4pkf7AEWwkol2gilCNZ0ElY+bxS4WE2PQXfrA=
+periph.io/x/conn/v3 v3.7.0/go.mod h1:ypY7UVxgDbP9PJGwFSVelRRagxyXYfttVh7hJZUHEhg=
+periph.io/x/host/v3 v3.8.2 h1:ayKUDzgUCN0g8+/xM9GTkWaOBhSLVcVHGTfjAOi8OsQ=
+periph.io/x/host/v3 v3.8.2/go.mod h1:yFL76AesNHR68PboofSWYaQTKmvPXsQH2Apvp/ls/K4=
diff --git a/main.go b/main.go
index aafd90c..62ad1cb 100644
--- a/main.go
+++ b/main.go
@@ -1,8 +1,20 @@
 package main
 
-import "fmt"
+import (
+	"fmt"
+	"periph.io/x/conn/v3/gpio"
+	"periph.io/x/host/v3"
+	"periph.io/x/host/v3/orangepi"
+	"time"
+)
 
 func main() {
-	fmt.Println("Hello world")
+	host.Init()
+	t := time.NewTicker(500 * time.Millisecond)
+	for l := gpio.Low; ; l = !l {
+		orangepi.PA1_8.Out(l)
+		<-t.C
+		fmt.Println("tick")
 
+	}
 }