diff --git a/README.md b/README.md
index 3baa1e7..2c825c5 100644
--- a/README.md
+++ b/README.md
@@ -100,82 +100,96 @@ we will show a few choice examples here.
 
 Use the **LED** driver to toggle LEDs on the BBB:
 
-	import "github.com/kidoman/embd"
-	...
-	embd.InitLED()
-	defer embd.CloseLED()
-	...
-	led, err := embd.NewLED(3)
-	...
-	led.Toggle()
+```go
+import "github.com/kidoman/embd"
+...
+embd.InitLED()
+defer embd.CloseLED()
+...
+led, err := embd.NewLED(3)
+...
+led.Toggle()
+```
 
 Even shorter when quickly trying things out:
 
-	import "github.com/kidoman/embd"
-	...
-	embd.InitLED()
-	defer embd.CloseLED()
-	...
-	embd.ToggleLED(3)
+```go
+import "github.com/kidoman/embd"
+...
+embd.InitLED()
+defer embd.CloseLED()
+...
+embd.ToggleLED(3)
+```
 
 **3** is the same as **USR3** for all intents and purposes. The driver is smart enough to figure all this out.
 
 BBB + **PWM**:
 
-	import "github.com/kidoman/embd"
-	...
-	embd.InitGPIO()
-	defer embd.CloseGPIO()
-	...
-	pwm, _ := embd.NewPWMPin("P9_14")
-	defer pwm.Close()
-	...
-	pwm.SetDuty(1000)
+```go
+import "github.com/kidoman/embd"
+...
+embd.InitGPIO()
+defer embd.CloseGPIO()
+...
+pwm, _ := embd.NewPWMPin("P9_14")
+defer pwm.Close()
+...
+pwm.SetDuty(1000)
+```
 
 Control **GPIO** pins on the RaspberryPi / BeagleBone Black:
 
-	import "github.com/kidoman/embd"
-	...
-	embd.InitGPIO()
-	defer embd.CloseGPIO()
-	...
-	embd.SetDirection(10, embd.Out)
-	embd.DigitalWrite(10, embd.High)
+```go
+import "github.com/kidoman/embd"
+...
+embd.InitGPIO()
+defer embd.CloseGPIO()
+...
+embd.SetDirection(10, embd.Out)
+embd.DigitalWrite(10, embd.High)
+```
 
 Could also do:
 
-	import "github.com/kidoman/embd"
-	...
-	embd.InitGPIO()
-	defer embd.CloseGPIO()
-	...
-	pin, err := embd.NewDigitalPin(10)
-	...
-	pin.SetDirection(embd.Out)
-	pin.Write(embd.High)
+```go
+import "github.com/kidoman/embd"
+...
+embd.InitGPIO()
+defer embd.CloseGPIO()
+...
+pin, err := embd.NewDigitalPin(10)
+...
+pin.SetDirection(embd.Out)
+pin.Write(embd.High)
+```
 
 Or read data from the **Bosch BMP085** barometric sensor:
 
-	import "github.com/kidoman/embd"
-	import "github.com/kidoman/embd/sensor/bmp085"
-	...
-	bus := embd.NewI2CBus(1)
-	...
-	baro := bmp085.New(bus)
-	...
-	temp, err := baro.Temperature()
-	altitude, err := baro.Altitude()
+```go
+import "github.com/kidoman/embd"
+import "github.com/kidoman/embd/sensor/bmp085"
+...
+bus := embd.NewI2CBus(1)
+...
+baro := bmp085.New(bus)
+...
+temp, err := baro.Temperature()
+altitude, err := baro.Altitude()
+```
 
 Even find out the heading from the **LSM303** magnetometer:
 
-	import "github.com/kidoman/embd"
-	import "github.com/kidoman/embd/sensor/lsm303"
-	...
-	bus := embd.NewI2CBus(1)
-	...
-	mag := lsm303.New(bus)
-	...
-	heading, err := mag.Heading()
+```go
+import "github.com/kidoman/embd"
+import "github.com/kidoman/embd/sensor/lsm303"
+...
+bus := embd.NewI2CBus(1)
+...
+mag := lsm303.New(bus)
+...
+heading, err := mag.Heading()
+```
 
 The above two examples depend on **I2C** and therefore will work without change on almost all
 platforms.