diff --git a/transpile/mapping.go b/transpile/mapping.go
index 8b3dc7a..d3200c5 100644
--- a/transpile/mapping.go
+++ b/transpile/mapping.go
@@ -58,4 +58,12 @@ var mapping = map[string]string{
 	"wifi.StatusScanCompleted":   "WL_SCAN_COMPLETED",
 	"Loop":                       "void loop",
 	"Setup":                      "void setup",
+	"arduino.A0":                 "A0",
+	"arduino.A1":                 "A1",
+	"arduino.A2":                 "A2",
+	"arduino.A3":                 "A3",
+	"arduino.A4":                 "A4",
+	"arduino.A5":                 "A5",
+	"arduino.A6":                 "A6",
+	"arduino.A7":                 "A7",
 }
diff --git a/transpile/service.go b/transpile/service.go
index a316c7e..f195af9 100644
--- a/transpile/service.go
+++ b/transpile/service.go
@@ -439,6 +439,8 @@ func handleValueSpecValues(values []ast.Expr) string {
 		switch v := value.(type) {
 		case *ast.BasicLit:
 			code += handleBasicLit(v)
+		case *ast.SelectorExpr:
+			code += handleSelectorExpr(value)
 		}
 	}
 	return code
diff --git a/transpile/service_test.go b/transpile/service_test.go
index 0c48a80..c1292e8 100644
--- a/transpile/service_test.go
+++ b/transpile/service_test.go
@@ -5,6 +5,7 @@ import (
 	"strings"
 	"testing"
 
+	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 )
 
@@ -32,6 +33,17 @@ func Validate(source, expected string, t *testing.T) {
 	ExpectWithOffset(1, tgot).To(Be(texpected))
 }
 
+func Compare(source, expected string) {
+	var in, out bytes.Buffer
+	in.WriteString(source)
+	service := NewService(&in, &out)
+	err := service.Start()
+	got := out.String()
+	tgot, texpected := Trim(got), Trim(expected)
+	ExpectWithOffset(1, err).NotTo(HaveOccurred())
+	ExpectWithOffset(1, tgot).To(Be(texpected))
+}
+
 func Test_Empty_Package(t *testing.T) {
 	source := `package test`
 	expected := `void loop(){}
@@ -480,4 +492,53 @@ func Test_WiFiWebClient(t *testing.T) {
 	Validate(source, expected, t)
 }
 
+func TestUtils(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Go Translator")
+}
+
+func NDescribe(s string, i func()) int                           { return 0 }
+func NIt(s string, i func()) int                                 { return 0 }
+func NIt_async(s string, i func(done Done), timeout float64) int { return 0 }
+
 var Be = Equal
+
+func BeCalled(called bool) {
+	ExpectWithOffset(1, called).To(BeTrue())
+}
+
+func NoErr(err error) {
+	ExpectWithOffset(1, err).NotTo(HaveOccurred())
+}
+
+var Ok = NoErr
+
+func ErrBe(err error, must error) {
+	if must != nil {
+		Ω(err).To(Be(must))
+	} else {
+		Ω(err).To(BeNil())
+	}
+}
+
+func ToBeTrue(arg bool) {
+	Ω(arg).To(BeTrue())
+}
+
+var _ = Describe("Go Translator", func() {
+	Describe("Arduino", func() {
+		It("Maps constants", func() {
+			source := `package test
+				var analogInPin int = arduino.A0
+				func Setup() error {}
+				func Loop() error {}
+			`
+			expected := `
+				int analogInPin = A0;
+				void setup() {}
+				void loop() {}
+			`
+			Compare(source, expected)
+		})
+	})
+})