2CommentsJoined September 25th, 2016

Tell us about yourself!

Complete Your Profile
  • sid555 commented on abo_hosni's instructable DIY LED Tachomter (RPM gauge)1 year ago
    DIY LED Tachomter (RPM gauge)

    instead try connecting those terminals to battery and add a seperate key for the tach.. that would be simple!

    that would we make your entire circut less reliable. the voltage drop would not be absorbed easily in 555. LM2917 regulates a potential of 9v and your source is 12v. so always LM2917 is prferable.

    View Instructable »