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Barcode not able to scan, arduino, Adafruit_Thermal library
I am using latest Adafruit_Thermal library, arduino mega 2560 & using it to print barcode. Issue is barcode is printed but my mobile app is unable read it. tried multiple apps...
Friday, 27 September 2019 - 07:55
Equivalent of saft battery ls33600b
Is there any equivalent of saft battery ls33600b , http://www.farnell.com/datasheet...   One I found is omincel.   Any other good reputed brand for use in oil and gas...
Wednesday, 10 July 2019 - 05:03
Drive current for led 0 to 100%
1. Need to drive a single white led, part no: 2ES103CW06000001 , datasheet: http://www.edison-opto.com/en/pr... Datasheet says it has Vf=3.4V & If=700mA, Peak pulse current:...
Sunday, 2 June 2019 - 07:27
WSD2811 led time code in C, optimize further
1. I am using WSD2811 to run led in series. I am using C-code for programming. My below code is working by carefully adjusting some of NOP instructions.    2. 100 leds...
Monday, 27 May 2019 - 14:05
Label printer datasheet
I got this cheap label printer from market. Need to be interface with arduino.   Any idea where I can find its datasheet. Seller didnt have it, asked to download from...
Thursday, 18 April 2019 - 14:29
Going to production, make Nano -atmega328p program, how to do it?
1. I have a arduino nano board & made a small project on it. Its running succesfully.   2. Now i want to go to program 100 more MCU and make own board which is customized...
Thursday, 21 March 2019 - 15:21
Problem reading Ps2 keyboard arduino
1. I am using arduino mega, and arduino 1.8.8. Code is compied using O3 optimization. I have changes Os to O3 in platform.txt at 3 places for fast code.   2. I have foloowing...
Wednesday, 6 March 2019 - 04:41
Arduino Mega PS2, don't work after power on off
1.  I am using arduino mega 2560. A PS2 keyboard is connected to read keys & display on segment. Library used is PS2Keyboard.cpp - PS2Keyboard library Written by...
Friday, 9 November 2018 - 10:46
Arduino Mega 2560 two interrupt issue
1. I am using arduino mega 2560. Connected are 20 segments together, refreshed every 500us. After every 500us, one segment is enable & written.   2. Also a PS2 keyboard...
Monday, 5 November 2018 - 12:25
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...
Tuesday, 11 September 2018 - 06:08
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

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