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Re: Microview games!

 by stellajohn ¦  Fri Sep 16, 2016 12:18 am ¦  Forum: MicroView Projects ¦  Topic: Microview games! ¦  Replies: 2 ¦  Views: 5070

Nice one.

Re: Liquid pressure sensor?

 by stellajohn ¦  Fri Sep 16, 2016 12:06 am ¦  Forum: New Product Ideas ¦  Topic: Liquid pressure sensor? ¦  Replies: 7 ¦  Views: 3754

Great help from this post for my minor project. Thanks everyone.

Re: human following robot

 by stellajohn ¦  Thu Sep 08, 2016 11:20 am ¦  Forum: Arduino ¦  Topic: human following robot ¦  Replies: 2 ¦  Views: 639

Re: LED in series

 by stellajohn ¦  Wed Sep 07, 2016 10:49 am ¦  Forum: Forum ¦  Topic: LED in series ¦  Replies: 5 ¦  Views: 3498

LED connection with power depends upon your requirements if you want to light up for some more time and you have current then use in series but if your have limited voltage then use parallel method also you need precise value of resistors for any type of connection.

Re: can anyone give me some advice on choosing resistors

 by stellajohn ¦  Wed Sep 07, 2016 10:43 am ¦  Forum: Forum ¦  Topic: can anyone give me some advice on choosing resistors ¦  Replies: 3 ¦  Views: 2926

Resistor are not a a dress that you can choose for your design so that your products looks nice. It is vary with lots of factors like current, voltage, frequency etc. So, first understand what is resistor and how to calculate the value in circuit then you will know how to choose the resistor.

Re: Optocoupler Circuit Overheating

 by stellajohn ¦  Tue Sep 06, 2016 8:59 am ¦  Forum: PCB Design Questions ¦  Topic: Optocoupler Circuit Overheating ¦  Replies: 3 ¦  Views: 1532

Only major things to heating circuit is due to uncontrollable flow of current from source. Try to reduce the high current flow from source or use the heat sink for IC like 555 , voltage regulator IC.

Re: Ardumoto Overheats

 by stellajohn ¦  Tue Sep 06, 2016 8:56 am ¦  Forum: Projects ¦  Topic: Ardumoto Overheats ¦  Replies: 7 ¦  Views: 1026

Heating is because of high current. Please see the datasheet of L298 once to know how much current it can handle and also see the current consumes by the motor during operation. As much as I know current is only factor here which making driver hot. To reduce for now you can use some current control ...

Re: Arduino Ethernet Shield 2

 by stellajohn ¦  Fri Sep 02, 2016 11:33 am ¦  Forum: SparkFun Product Questions ¦  Topic: Arduino Ethernet Shield 2 ¦  Replies: 1 ¦  Views: 527

Hello , can you please follow this tutorial http://www.instructables.com/id/Arduino ... -Tutorial/ this mau gives your answer perfectly.

Re: Attiny85 pin 1

 by stellajohn ¦  Fri Sep 02, 2016 11:29 am ¦  Forum: AVR Microcontrollers ¦  Topic: Attiny85 pin 1 ¦  Replies: 2 ¦  Views: 2968

In order to use pin PB5, which is the reset pin, you need to program it with specific fuse settings. And because you cannot reset it anymore you need a special high voltage programmer. The ICSP method of programming won't work. And the regular arduino bootloader neither, for sure. Here is a tutoria...

Re: Why is Attiny85 so popular?

 by stellajohn ¦  Fri Sep 02, 2016 11:25 am ¦  Forum: AVR Microcontrollers ¦  Topic: Why is Attiny85 so popular? ¦  Replies: 22 ¦  Views: 5752

ATtiny85 is very useful micro-controller for real projects and if compact design then it has more importance. Try once and and feel the simplicity for complex project :)

Re: Detecting Lightning with an Arduino

 by stellajohn ¦  Thu Sep 01, 2016 6:13 am ¦  Forum: New Product Ideas ¦  Topic: Detecting Lightning with an Arduino ¦  Replies: 1 ¦  Views: 2076

This is very interesting topic . I also used to get detection using some IR sensors but it works only at midnight after I was in dream :( . But later I find this https://create.arduino.cc/projecthub/runtimeprojects/a-lightning-detector-for-arduino-9f679c which is quite interesting to work and learn ...

Re: 3/4 HP 12VDC motor Controller

 by stellajohn ¦  Tue Aug 23, 2016 12:13 am ¦  Forum: Projects ¦  Topic: 3/4 HP 12VDC motor Controller ¦  Replies: 3 ¦  Views: 1059

Hi there, have you checked with amazon, there you can find " Motors Electric Pump Fan Speed Stepless Control Module with Reverse Polarity Protection High-Current Protection". This may help you and any kind of motors you want to run in future.

Re: Need help for my first project

 by stellajohn ¦  Sat Aug 20, 2016 12:32 am ¦  Forum: Projects ¦  Topic: Need help for my first project ¦  Replies: 2 ¦  Views: 615

You can use simply LDR or IR sensor in main sensor and A and B can be white paper and black paper . You need one interface between computer and main sensor that can be simple controller Arduino. Then when white paper is near to main sensor arduino will provide either 1 or 0 (which you can set by pro...