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diff --git a/blink/blink.v b/blink/blink.v
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+/* Copyright 2020 Gregory Davill <greg.davill@gmail.com>
+   Hacked 2021 by Tommy Thorn
+*/
+`default_nettype none
+
+/*
+ *  Blink an LED on the ButterStick r1.0 using Verilog
+ */
+
+module top (
+    input clk30,
+    output [6:0] led_rgb_multiplex_a,
+    output [2:0] led_rgb_multiplex_b
+);
+    // Create a 32 bit register
+    reg [31:0] counter = 0;
+
+    // Every positive edge increment register by 1
+    always @(posedge clk30) begin
+        counter <= counter + 1;
+    end
+
+    // Output inverted values of counter onto LEDs
+    assign led_rgb_multiplex_b = counter[26:24];
+    assign led_rgb_multiplex_a = counter[31:25];
+endmodule