Additional mod to the tach:

1. Added ST L7812 voltage regulator to the circuit. Stabilize the input voltage to 12V

2. Added a 220uF cap on the regulator output.

3. Cleaned and assembled

IMG_20131011_123015

Test will be carried out on weekend on my VWs.

 

Average Rating: 4.6 out of 5 based on 257 user reviews.

IMG_20131009_102802 IMG_20131009_102844 IMG_20131009_113849 IMG_20131009_113958 IMG_20131009_114017

Average Rating: 5 out of 5 based on 285 user reviews.

IMG_20131008_004509 IMG_20131008_004540 IMG_20131008_004547

Average Rating: 4.9 out of 5 based on 207 user reviews.