diff --git a/experimental/devices/nrzled/nrzled.go b/experimental/devices/nrzled/nrzled.go
index 4943076..da7ec06 100644
--- a/experimental/devices/nrzled/nrzled.go
+++ b/experimental/devices/nrzled/nrzled.go
@@ -59,10 +59,11 @@ func New(p gpiostream.PinOut, numPixels, hz int, channels int) (*Dev, error) {
 		p:         p,
 		numPixels: numPixels,
 		channels:  channels,
-		b: gpiostream.BitStreamMSB{
+		b: gpiostream.BitStream{
 			Res: time.Second / time.Duration(hz),
 			// Each bit is encoded on 3 bits.
-			Bits: make(gpiostream.BitsMSB, numPixels*3*channels),
+			Bits: make([]byte, numPixels*3*channels),
+			LSBF: false,
 		},
 	}, nil
 }
@@ -71,9 +72,9 @@ func New(p gpiostream.PinOut, numPixels, hz int, channels int) (*Dev, error) {
 type Dev struct {
 	p         gpiostream.PinOut
 	numPixels int
-	channels  int                     // Number of channels per pixel
-	b         gpiostream.BitStreamMSB // NRZ encoded bits; cached to reduce heap fragmentation
-	buf       []byte                  // Double buffer of RGB/RGBW pixels; enables partial Draw()
+	channels  int                  // Number of channels per pixel
+	b         gpiostream.BitStream // NRZ encoded bits; cached to reduce heap fragmentation
+	buf       []byte               // Double buffer of RGB/RGBW pixels; enables partial Draw()
 }
 
 func (d *Dev) String() string {
diff --git a/experimental/devices/nrzled/nrzled_test.go b/experimental/devices/nrzled/nrzled_test.go
index b64244d..04cf5b3 100644
--- a/experimental/devices/nrzled/nrzled_test.go
+++ b/experimental/devices/nrzled/nrzled_test.go
@@ -47,8 +47,8 @@ func TestNew_3(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		N: "Yo",
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92,
 					0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49,
 					0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
@@ -56,7 +56,8 @@ func TestNew_3(t *testing.T) {
 					0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49,
 					0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}
@@ -94,8 +95,8 @@ func TestNew_fail(t *testing.T) {
 func TestDraw_NRGBA_3(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb,
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49,
 					0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
@@ -103,7 +104,8 @@ func TestDraw_NRGBA_3(t *testing.T) {
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d,
 					0xb6, 0x92, 0x49, 0xb6, 0x92, 0x49, 0xb4, 0x92, 0x4d, 0x24,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}
@@ -119,8 +121,8 @@ func TestDraw_NRGBA_3(t *testing.T) {
 func TestDraw_RGBA_3(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb,
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49,
 					0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
@@ -128,7 +130,8 @@ func TestDraw_RGBA_3(t *testing.T) {
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xa6, 0xdb, 0x6d, 0xa6, 0xdb, 0x6d,
 					0xa6, 0xda, 0x49, 0xb6, 0xd3, 0x4d, 0x34, 0xdb, 0x49, 0x36,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}
@@ -144,8 +147,8 @@ func TestDraw_RGBA_3(t *testing.T) {
 func TestDraw_RGBA_4(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92,
 					0x49, 0x24, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49,
 					0x24, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6,
@@ -155,7 +158,8 @@ func TestDraw_RGBA_4(t *testing.T) {
 					0xdb, 0x6d, 0xa6, 0xdb, 0x6d, 0xa6, 0xdb, 0x6d, 0xa6, 0xd2, 0x49, 0x24, 0xda, 0x49, 0xb6, 0xd3,
 					0x4d, 0x34, 0xdb, 0x49, 0x36, 0x92, 0x4d, 0x26,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}
@@ -171,8 +175,8 @@ func TestDraw_RGBA_4(t *testing.T) {
 func TestDraw_Limits(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb,
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49,
 					0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
@@ -180,7 +184,8 @@ func TestDraw_Limits(t *testing.T) {
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xa6, 0xdb, 0x6d, 0xa6, 0xdb, 0x6d,
 					0xa6, 0xda, 0x49, 0xb6, 0xd3, 0x4d, 0x34, 0xdb, 0x49, 0x36,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}
@@ -196,8 +201,8 @@ func TestDraw_Limits(t *testing.T) {
 func TestWrite_3(t *testing.T) {
 	g := gpiostreamtest.PinOutPlayback{
 		Ops: []gpiostream.Stream{
-			&gpiostream.BitStreamMSB{
-				Bits: gpiostream.BitsMSB{
+			&gpiostream.BitStream{
+				Bits: []byte{
 					0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb,
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49,
 					0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0x24, 0x92, 0x49, 0x24,
@@ -205,7 +210,8 @@ func TestWrite_3(t *testing.T) {
 					0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0xdb, 0x6d, 0xb6, 0x92, 0x49, 0xa4, 0x92, 0x49, 0x36, 0x92, 0x49,
 					0xa6, 0x92, 0x49, 0xb6, 0x92, 0x49, 0xb4, 0x92, 0x4d, 0x24,
 				},
-				Res: 2500 * time.Nanosecond,
+				Res:  2500 * time.Nanosecond,
+				LSBF: false,
 			},
 		},
 	}