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Measure intensity of particular instrument sound
1. Need to measure the intensity or loudness of particular musical instrument like guitar and based on its loudness i have to send a signal to pc. More the sound more the signal...
Friday, 24 August 2018 - 17:15
Lithium Ion battery indication by led through voltage measurement
1. Have to make a led level indicator of lithium battery of 7.4V (two cells in series of 3.7V each). Led level indications are 0-20,40,60,80 & 100% i.e by 5 leds.   2....
Tuesday, 12 June 2018 - 04:28
Sticker Printer on Thermal printer
1. I am using Atmega2560 & em205 thermal printer. https://hacktronics.co.in/therma...   Been able to print correctly text & bar-codes on thermal paper.    ...
Saturday, 31 March 2018 - 05:58
Print Code 128 barcodes on EM205 thermal printer
1. Need to print Code 128 barcodes on EM205 thermal printers. I am using arduino library here: https://github.com/adafruit/Adaf...   2. printer is EM205 running at 9600 baud...
Wednesday, 7 March 2018 - 02:11
Calculating Watt & Watt-hour consumed from battery
1. I have a data logger for 48V battery which takes reading every 1 second of voltage & current & store it in a file.   2. Reading is something like this: a) 47.4V,...
Sunday, 4 February 2018 - 04:51
Understanding Zero Cross Triac operation
1. I have a application in which need to turn on & off a load, resistive in  nature. mains is 220va/50Hz & load is 750ohms approx. MCu is +5V operated.   2. I...
Sunday, 24 December 2017 - 06:50
Using Triac MOC3052 for ac load on/off
1. Have to turn on or off, ac load using micro-controller. Microcontroller is +5V powered.  AC load is resisitive wire of 780ohms for heating wire purpose.   2. using...
Monday, 18 December 2017 - 06:49
Limit current for Li-Ion battery charging
1. I have a 11.1V/4.4Ah lithium battery, whose full charge voltage is at 12.6V   2. there is separate 12.6V/5A adapter in the instrument where we need to fit the battery....
Tuesday, 12 December 2017 - 07:16
Which IC to make Pen drive interfacing with Microcontroller
1. I have to interface a pen-drive with a microcontroller for data logging purpose. task is to create a FAT based text file in which data will be appended.   2. Is there any...
Tuesday, 21 November 2017 - 05:15
Extending camera cable for mobile application
1. Have to extend mobile camera by around 15cm to outer custom body. Attached is camera pic & its mating connector pic on PCB where camera needs to be connected.   2. Is...
Monday, 30 October 2017 - 06:20
Can we charge Li-Ion battery with lead acid charger
1. I have a lead acid charger of 48V/20A , I can set its voltage to 54.6V to charge a li-ion battery of 13 cells in series with slightly less currnt than 20A.   2. Can we...
Friday, 20 October 2017 - 05:29
GLCD Ks0108 Code not working
1. I have modified a code  library for GLCD Ks0108 type.   2. Nothing is getting displayed on GLCD in code.   3. I have checked individual pins by set & reset...
Friday, 6 October 2017 - 13:17

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