diff --git a/controller/pca9685/pca9685.go b/controller/pca9685/pca9685.go
index 0559e99..135c054 100644
--- a/controller/pca9685/pca9685.go
+++ b/controller/pca9685/pca9685.go
@@ -123,7 +123,7 @@ func (d *PCA9685) SetPwm(channel, onTime, offTime int) (err error) {
 	}
 
 	onTimeHighReg := onTimeLowReg + 1
-	if err = d.Bus.WriteByteToReg(d.Addr, onTimeHighReg, onTimeHighReg); err != nil {
+	if err = d.Bus.WriteByteToReg(d.Addr, onTimeHighReg, onTimeHigh); err != nil {
 		return
 	}
 	if d.Debug {
@@ -171,7 +171,7 @@ func (d *PCA9685) Close() (err error) {
 		log.Printf("pca9685: cleaning up all PWM control registers")
 	}
 
-	for regAddr := 0x0; regAddr <= 0x45; regAddr++ {
+	for regAddr := 0x06; regAddr <= 0x45; regAddr++ {
 		if err = d.Bus.WriteByteToReg(d.Addr, byte(regAddr), 0x00); err != nil {
 			return
 		}
diff --git a/samples/pca9685.go b/samples/pca9685.go
index 33cb993..cff6229 100644
--- a/samples/pca9685.go
+++ b/samples/pca9685.go
@@ -16,11 +16,11 @@ func main() {
 		log.Panic(err)
 	}
 
-	pca9685 := pca9685.New(bus, 0x41, 1000)
+	pca9685 := pca9685.New(bus, 0x42, 1000)
 	pca9685.Debug = true
 	defer pca9685.Close()
 
-	if err := pca9685.SetPwm(15, 0, 2000); err != nil {
+	if err := pca9685.SetPwm(0, 0, 2000); err != nil {
 		log.Panic(err)
 	}