diff --git a/examples/AcidStepSequencer/AcidStepSequencer.ino b/examples/AcidStepSequencer/AcidStepSequencer.ino
index 8c0bf52..dc2d009 100644
--- a/examples/AcidStepSequencer/AcidStepSequencer.ino
+++ b/examples/AcidStepSequencer/AcidStepSequencer.ino
@@ -1,4 +1,6 @@
-// PITCH MODE EMULATION OF ROLAND TB303
+// Acid StepSequencer, a Roland TB303 step sequencer engine clone
+// author: midilab contact@midilab.co
+// under MIT license
 #include "Arduino.h"
 #include <uClock.h>
 
diff --git a/examples/AcidStepSequencer/acid_step_sequencer-protoboard-v001.png b/examples/AcidStepSequencer/acid_step_sequencer-protoboard-v001.png
new file mode 100644
index 0000000..94a6afa
Binary files /dev/null and b/examples/AcidStepSequencer/acid_step_sequencer-protoboard-v001.png differ