diff --git a/README.md b/README.md
index 44ecddb..85ce95d 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Build order as per the website. Cost for each gate in NAND in brackets.
 
 - [x] HalfAdder (Xor+And)
 - [x] FullAdder (2 x HalfAdder, 1 Or)
-- [ ] Add16
+- [x] Add16 (1 x HalfAdder, 15 x FullAdder)
 - [ ] Inc16
 - [ ] ALU (nostat)
 - [ ] ALU (complete)
diff --git a/projects/02/Add16.hdl b/projects/02/Add16.hdl
index bafd3ce..5f183eb 100644
--- a/projects/02/Add16.hdl
+++ b/projects/02/Add16.hdl
@@ -13,5 +13,20 @@ CHIP Add16 {
     OUT out[16];
 
     PARTS:
-   // Put you code here:
-}
\ No newline at end of file
+    HalfAdder(a=a[0], b=b[0], sum=out[0], carry=carry0);
+    FullAdder(a=a[1], b=b[1], c=carry0, sum=out[1], carry=carry1);
+    FullAdder(a=a[2], b=b[2], c=carry1, sum=out[2], carry=carry2);
+    FullAdder(a=a[3], b=b[3], c=carry2, sum=out[3], carry=carry3);
+    FullAdder(a=a[4], b=b[4], c=carry3, sum=out[4], carry=carry4);
+    FullAdder(a=a[5], b=b[5], c=carry4, sum=out[5], carry=carry5);
+    FullAdder(a=a[6], b=b[6], c=carry5, sum=out[6], carry=carry6);
+    FullAdder(a=a[7], b=b[7], c=carry6, sum=out[7], carry=carry7);
+    FullAdder(a=a[8], b=b[8], c=carry7, sum=out[8], carry=carry8);
+    FullAdder(a=a[9], b=b[9], c=carry8, sum=out[9], carry=carry9);
+    FullAdder(a=a[10], b=b[10], c=carry9, sum=out[10], carry=carry10);
+    FullAdder(a=a[11], b=b[11], c=carry10, sum=out[11], carry=carry11);
+    FullAdder(a=a[12], b=b[12], c=carry11, sum=out[12], carry=carry12);
+    FullAdder(a=a[13], b=b[13], c=carry12, sum=out[13], carry=carry13);
+    FullAdder(a=a[14], b=b[14], c=carry13, sum=out[14], carry=carry14);
+    FullAdder(a=a[15], b=b[15], c=carry14, sum=out[15], carry=carry15);
+}
diff --git a/projects/02/Add16.out b/projects/02/Add16.out
new file mode 100644
index 0000000..20f9c65
--- /dev/null
+++ b/projects/02/Add16.out
@@ -0,0 +1,7 @@
+|        a         |        b         |       out        |
+| 0000000000000000 | 0000000000000000 | 0000000000000000 |
+| 0000000000000000 | 1111111111111111 | 1111111111111111 |
+| 1111111111111111 | 1111111111111111 | 1111111111111110 |
+| 1010101010101010 | 0101010101010101 | 1111111111111111 |
+| 0011110011000011 | 0000111111110000 | 0100110010110011 |
+| 0001001000110100 | 1001100001110110 | 1010101010101010 |