Here is a Simple LED Volt meter to Monitor the charge level in Lead Acid Battery or Tubular battery. The terminal voltage of the battery is indicated through a four level LED indicators. The nominal ...

This is the (rather trivial) code for a simple LED-based CO₂ light meter (more or less a continuous CO₂ "traffic light") based on the following hardware components: A Raspberry Pi or similar single ...

The circuit was conventionally designed with eight LED audio level meter made out of two low power quad op-amps which utilizes LM324. Volume Unit – an entity equal to a decibel for expressing the ...

lam power levels as well. The IC contains an adjustable voltage reference and an accurate ten-step voltage divider. The input buffer drives 10 individual com- parators referenced to the precision ...

The LM3914 LED bar graph driver was an amazing chip back in the day. Along with the LM3915, its logarithmic cousin, these chips gave a modern look to projects, allowing dancing LEDs to stand in for a ...