Reader 
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- GND     black
- RST     blue       3.3V
- 3.3V    red
- MISO    brown      21
- SDA     green      19
- SCK     yellow     18
- MOSI    orange      5
- IRQ     green single cable not connected


Button Board:
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- rot in   | white  13
- btn2 led | grey   12
- btn2 in  | purple 14
- rotB     | blue   27
- rotA     | green  26
- btn1 in  | yellow 25 
- btn1 led | orange 33

rot="rotary encoder"
in=button sense in
led = 5V pwm