Arduino & LCD Capacitor Voltage Project | Zig

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Discussion Overview

The discussion revolves around a project involving an Arduino and an LCD to measure and display the voltage of a capacitor. Participants explore methods for obtaining voltage readings and controlling the circuit based on those readings, focusing on both hardware components and coding approaches.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • Zig seeks advice on how to set up an Arduino to read voltage from an LCD and control a circuit to charge capacitors when voltage is low.
  • One participant questions how the LCD is receiving its values and suggests redirecting the signal to the chip instead.
  • Zig mentions a specific digital voltmeter from eBay and expresses uncertainty about whether it can be used or if Arduino-specific code is necessary.
  • Another participant proposes that using the Arduino's built-in Analog-to-Digital (AtoD) converter would be significantly simpler than reading from the LCD.

Areas of Agreement / Disagreement

Participants express differing views on the best method to obtain voltage readings, with some favoring the use of the Arduino's AtoD capabilities while others consider the use of an external voltmeter. The discussion remains unresolved regarding the optimal approach.

Contextual Notes

There are uncertainties regarding the integration of the LCD and the voltmeter, as well as the specific coding requirements for the Arduino. The discussion does not clarify the dependencies on hardware specifications or the exact implementation steps.

Who May Find This Useful

Individuals interested in Arduino projects, electronics, and voltage measurement techniques may find this discussion relevant.

Ziggey
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Hey guys so I'm working on a project with an Arduino. I need the Arduino to read from a LCD to tell it what the voltage of a capacitor is. If the voltage is to low I would like it I switch the circuit on to charge the capacitors back up. Anyone know where a good starting point would be?

Thank you,
Zig.
 
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How is the LCD getting the values to display?
IS there a way you could instead redirect this signal right to the chip?
 
Well I wanted to use something like this for the volt meter. http://www.ebay.com/itm/Digital-Voltmeter-AC-80-500V-Voltage-Measure-LCD-Panel-Meter-230V-110V-220V-/390895017063?pt=LH_DefaultDomain_0&hash=item5b03289c67

But I'm not sure if I can use that or if I would have to use the half divider code specifically for Arduino.
Thank you,
Zig
 
It would almost certainly be order of magnitudes simpler to use the chips built in AtoD than trying to read off of that LCD.
 
Ok well that is good to know. Thank you for your help!
Zig
 

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