Lazarus
Announcements => Third party => Topic started by: ArndtB on March 29, 2017, 12:27:45 pm
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Hello together,
I want to share my small Tool LED Calculator (LedCalc) with you, realized with FreePascal and Lazarus, licensed under GPL-3.
LED Calculator (LedCalc) is a small, cross-platform graphical tool to calculate resistor values for single LEDs. Helpful for beginners to calculate and choose the correct resistors for own electronical projects and experiments with light-emitting diodes (e.g. for Arduino, Raspberry Pi or something else). This program was written in FreePascal 2.6.4 supported by the IDE Lazarus 1.4.4.
http://git.braier.net/ArndtB/LedCalc (http://git.braier.net/ArndtB/LedCalc)
I hope you like the program and it will be useful for you. For your suggestions, praise and criticism as well as any kind of feedback I am always open, please write me here, on GitHub or an email at dev@braier.net.
Thank you for your Feedback :)
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Nice.
An interesting extension for the engineer would be: You will not be able to buy a resistor having exactly 193.33 ohms, you only can buy resistors with discrete values. The series E24 with a tolerance of 5%, for example, has values 1.0, 1.1, 1.2, 1.3, 1.5, 1,8, 2.2 etc. (see http://www.logwell.com/tech/components/resistor_values.html (http://www.logwell.com/tech/components/resistor_values.html)). Your program could select the nearest value from this series, and calculate the variation of power loss and LED current within the tolerance limits.
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Good.
And yes, the resistors have standar values, so it would be better if the program gives this standar value (closer) and standar values of power.
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Cute ;)
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Very nice ,and will definitely be useful for beginners. Thanks for sharing.
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Cute ;)
Hehe this is also what I thought.
Cute little program :D
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Nice!
You might be able to remove the calculate button if any changes are made then automatically execute the calculate code.
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Hello together,
thank you all for your great feedback and proposals, I'm very happy about that. I will take this points and try to implement them :)
Many greetings and have a nice day :)
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Hello together,
LedCalc has moved and is now available here:
http://git.braier.net/ArndtB/LedCalc (http://git.braier.net/ArndtB/LedCalc)
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Hello,
nice program, but be carefull Vf values are not all identical in a class of the same color. By exemple, you can find a blue Led with Vf=2.65V and another one with Vf=3.7V. In any case, it is always recommended to put a resistance in series with a led to limit the current and preserve the Led.