Arduino-Based Instruments?

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BoeveP51

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I used the Arduino for my flap positioning monitor. used a slide resistor to monitor position and feedback to Arduino. A 10 bar LED for indicating.

Used the resistor in the servo as the position source for my radiator door positioning. Display was a simple 10 bar LED. Both work really well.
 

jandetlefsen

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I used the Arduino for my flap positioning monitor. used a slide resistor to monitor position and feedback to Arduino. A 10 bar LED for indicating.

Used the resistor in the servo as the position source for my radiator door positioning. Display was a simple 10 bar LED. Both work really well.
This is what i want to do. How did you do the power supply? Did you use an external voltage regulator or just hook it up? I've read that if you are constantly over 12 volt the onboard regulator will get quite hot. Hoping to bet my hands on a huvver board but looks like they aren't for sale currently.
 

Geraldc

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I used the Arduino for my flap positioning monitor. used a slide resistor to monitor position and feedback to Arduino. A 10 bar LED for indicating.

Used the resistor in the servo as the position source for my radiator door positioning. Display was a simple 10 bar LED. Both work really well.
You can buy a 10 led display board with lm3914 driver chip that reads directly off a slide resistor and no arduino needed.
1642046479616.png
 

BoeveP51

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This is what i want to do. How did you do the power supply? Did you use an external voltage regulator or just hook it up? I've read that if you are constantly over 12 volt the onboard regulator will get quite hot. Hoping to bet my hands on a huvver board but looks like they aren't for sale currently.
I found a 5V regulator/buck converter (whatever you call it) to power the Arduino and sense line. Works great. Have not had any issues.
 

rv7charlie

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Those 3914 based LED ladder displays are available from many sources. Here's an ebay link to LED VU meter. Note that the VU meters *may* have a logarithmic measurement curve; [edit] check to be sure that it's 3914 based and not 3915 based. (Thanks to Bill Higdon for the reminder.)
 
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qchen98

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LM3915 is quite complicated and frankly outdated.

A more modern solution would be some RGB led with WS2812 chips. It only takes one data line from the Arduino, however you can control each LED's color and brightness individually.
 

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Geraldc

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An description of the LM3914 chips here .
.
For a position indicator using a slide pot you might need to add a voltage regulator to allow for supply voltage fluctuations.
 

rv7charlie

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LM3915 is quite complicated and frankly outdated
Really? More complicated than hooking up power, ground, and input? How is that quite complicated, compared to needing to add an arduino, plus programming? If you already need the arduino for something else, the WS2812 would be fine, but for standalone, 'better is the enemy of good enough'.
 
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