Dispenses few ml of liquid sanitiser with the help of submersible motor on sensing hand (obstacle detection) using IR module
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ASD_ATTiny85.inoCode for ATTiny85 Based ASD Implementationx-arduino - 2.96 kB - 08/02/2020 at 02:34 |
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AutoSanDispenser.inoArduino Uno Sketch For Automatic Sanitiser Dispenserx-arduino - 3.42 kB - 07/09/2020 at 20:41 |
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Why did you use the 7 channel ULN2003 for the motor? For just one motor with single direction operation a simple small NPN transistor or MOSFET ( with a resistor or 2) is enough.
You are right Martin. However, I had these modules available and they just had to be connected with wires (no soldering). So used it temporarily just to see it work. I am planning to reduce this circuit by using ATTiny85, connect IR LEDS to micro directly and use internal comparator / ADC & an external transistor to switch the motor. Thanks for your suggestion though. Keep providing your inputs.
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Video Of ASD in action!
https://drive.google.com/file/d/1bOMow76Ps4ymcEIQftmgT0D760nHerBr/view?usp=sharing