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What drive/buffer can be used for controlling 100 DP1903 by a MCU 1. Have to drive DP1903, 100 lights, each of 100leds , in sync as they glow So that all looks same. 2. I tried making different MCU for each individual DP1903 leight(100... |
Tue. Sep 11, 2018 - 06:08 AM |
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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... |
Fri. Aug 24, 2018 - 05:15 PM |
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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.... |
Tue. Jun 12, 2018 - 04:28 AM |
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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. ... |
Sat. Mar 31, 2018 - 05:58 AM |
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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... |
Wed. Mar 7, 2018 - 02:11 AM |
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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,... |
Sun. Feb 4, 2018 - 04:51 AM |
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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... |
Sun. Dec 24, 2017 - 06:50 AM |
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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... |
Mon. Dec 18, 2017 - 06:49 AM |
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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.... |
Tue. Dec 12, 2017 - 07:16 AM |
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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... |
Tue. Nov 21, 2017 - 05:15 AM |
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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... |
Mon. Oct 30, 2017 - 06:20 AM |
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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... |
Fri. Oct 20, 2017 - 05:29 AM |