APA102 + Pico (problem on write data)

@Gordon I will check this on weekend.
But I decided to order two more Picos on Tindie.

• one I have given to a friend
  
• one with shim (ESP-01)
  
• one with shim (ESP-12)
  
• one with shim (HM-10)
  
• the only one without any shim on, is the "broken" one...