diff --git a/src/clockinator.S b/src/clockinator.S
index 2519057..7dd31d5 100644
--- a/src/clockinator.S
+++ b/src/clockinator.S
@@ -8,13 +8,18 @@
 
 #define __SFR_OFFSET 0
 #include <avr/io.h>
+
 #include "timer.inc"
 #include "led.inc"
-
 ;#include "bpm.inc"
 ;#include "midi.inc"
 
 .global main
+; note for the future
+; isr_button interrupt use
+; INT0 on the GIMSK, with the button on PB2
+; this enable a more precise/fast interrupt
+; useful for the tap tempo stuff
 
 isr_stop_blink:
     rcall       stop_blink              ; Turn off PB0 when TCNT0=OCF0A
@@ -23,9 +28,9 @@ isr_stop_blink:
 main:
     ; To compile on AtTiny25/45 comment out the SPH part
     ; SPH is needed only on AtTiny85 which has >256b of SRAM
-    ldi         r16,         lo8(RAMEND)
+    ldi         r16,        lo8(RAMEND)
     out         SPL,        r0          ; Setup stack pointer LOW
-    ldi         r16,         hi8(RAMEND)
+    ldi         r16,        hi8(RAMEND)
     out         SPH,        r0          ; Setup stack pointer HIGH
 
     sei                                 ; Global interrupt flag
@@ -33,24 +38,18 @@ main:
     ;cbi        DDRB,       PB1         ; Set EC11 clockwise on PB5 as input
     ;cbi        DDRB,       PB2         ; Set EC11 counter-clockwise on PB3 as input
     ;cbi        DDRB,       PB5         ; Set EC11 button (555 square wave) on PB4 as input
-    ldi         r26,        60          ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register
+    sbi         DDRB,       PB0         ; Set led on PB0 as output
+    ;ldi         r26,        60          ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register
 
     rcall       timer0_set
-    rcall       timer1_set
+    ;rcall       timer1_set
 
 
-; interrupts:
-;   button (tap tempo loop) tap_tempo:
-;   encoder (increase/decrease tempo by one) incr_temp: , decr_temp:
-; timer 1
-;
-; otherwise start from default bpm 60 (r26)
-
 ; loop: calculate tempo (high priority!) and save, led blinking, segment led writing
 loop:
-    ldi         r24,        30          ; Load current BPM to register //NOTE: hardcoded temporary
+    ;ldi         r24,        30          ; Load current BPM to register //NOTE: hardcoded temporary
                                         ; TODO: compare two registers (current bpm and previous bpm)
-    rcall       tempo_calc              ; CHANGE: if BPM changed then rcall BPM calculation function else skip because ticks tempo is the value already in [OCR1C]
+    ;rcall       tempo_calc              ; CHANGE: if BPM changed then rcall BPM calculation function else skip because ticks tempo is the value already in [OCR1C]
                                         ; if this BPM != previous BPM then load this to another register (will be used as the 'previous register')
 
     ; final result stored in OCR1C as ticks
@@ -59,13 +58,6 @@ loop:
 
     ;rcall      midi_send       ; Send MIDI ping
 
-    //FIXME: do this with interrupts. its much more efficient
-    // remove the polling shit and move stop_blink or an ISR
-    // check if need to change internal logic on led.inc
-    ; if midi clock then also do: rcall       start_blink
-    in          r16,        TIFR0       ; Read Interrupt Flag Register
-    sbrs        r16,        OCF0A       ; If timer status OCF0A=1 skip jump
-    rcall       stop_blink
 
     ; if midi clock then after do:
     rcall       start_blink
@@ -73,4 +65,8 @@ loop:
 
     ;rcall      segment_led             ; Output current BPM to 3-digit 7-segment LED [r24]
 
+
+    ; sleep when BPM is stabilized (whenever BPM calculation are not being done) and outside of midi send
+    ; to do this explore MCUCR register, it can do a lot of stuff
+
     rjmp        loop                    ; Loopback