Arduino Shift Light V2 Tachometer from Chippernut

www.chippernut.com
Chippernut 2015
Version 2.21

Racing DIY tachometer Shift Light
Hardware - mostly from Adafruit.
(1) Arduino Uno
(1) 7 segment w/ I2C backpack http://www.adafruit.com/products/881
(2) NeoPixel Sticks http://www.adafruit.com/products/1426
(1) 7805 TO-220 5V regulator (for neopixels)
** WILL NEED HEATSINKhttp://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_786138_-1
(1) Rotary Encoder
(1) 47k Resistor
(1) 10k Resistor
(1) 330 ohm Resistor
(1) 1000uF Capacitor
(1) PNP Transistor, 2N3906 **
** This intercepts the cars ECU RPM square wave (can be found on OBD terminal) -- without it, the signal terminates through the arduino (caused my gauges to go to zero)
Instructions:
https://www.chippernut.com/tech.html#/

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