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Getting accurate readings by ADC
I am trying to build a temperature logger with Atmega328, LM35 and ESP8266 but I am not getting an accurate ADC result. The problems I am facing are:   1. The converted ADC...
Friday, 19 June 2015 - 20:46
Power problem with ESP8266
I hooked up a ESP8266 with a ATmega328 and used LM7805 for 5V and a LM317 for 3.3V (from the 5V), my power supply is rated for 9V at 500mA max, the AVR is only blinking a LED and...
Saturday, 13 June 2015 - 21:22
433 Mhz Tx Rx Range Problem
I am using this module. It's cheap but atleast it should give 5m range indoor at 1000bps. But I am hardly getting 3m range on only 100bps.   I am using the VirtualWire...
Saturday, 17 January 2015 - 16:57
12V 2A SMPS Circuit
I got the circuit from this site. Made it in the simulator and it is not even working a little bit. The mosfet gate line is not oscillating, nothing is happening. What is wrong...
Tuesday, 11 November 2014 - 18:31
Solder Masking Ink
I am trying to make a complete PCB with solder masking and silk screening, for creating a small PCB fabrication house of my own later. I choose the process of screen printing for...
Monday, 3 November 2014 - 13:34
Non-Contact Voltage Detector
I made this one in the sim using schmitt triger. I found many sources but with odd resistor values. But the sim is showing different results. The first problem is when using 3V...
Saturday, 11 October 2014 - 16:50
Electromagnatic Wave Harvesting from 2.4-2.6 Ghz signals
Ok, I know iFind have already done a fraud on it. But I find this thing interesting.  I know little about it though.    I have done projects on witricity that...
Sunday, 5 October 2014 - 14:28
Regulated Boost Coverter using 555 timer
The best thing would be to use LM2577 for me, but that's not available in my area so I am left with this option only.  I am implementing this in a robot, so my min voltage is...
Monday, 29 September 2014 - 20:15
Use of using a low pass filter after a high pass filter
I am studying this circuit at http://www.electrosmash.com/marshall-mg10 here the first input stage is a high pass filter for reducing the humm, which almost reduces the low...
Wednesday, 13 August 2014 - 19:26
TDA2050's volume getting very low
I made this circuit http://www.amparchives.com/Amp%20Archives/Marshall/Schematics%20&%20Layouts/MG%20Schematics/Marshall%20MG15CD.pdf I made only the power amplifier part (...
Monday, 28 July 2014 - 19:39
433Mhz Power Supply
I was working with a 433Mhz tx rx. The transmission is working fine. I tried to save power by switching of the power to the transmitter when it is not transmitting. So, I used a...
Monday, 21 July 2014 - 11:22
Possible cases of bricked MCUs
Few days ago I brought 3 Atmega16a and 1 Atmega8 from two different shops. Today I tested all the ICs all showed up responding nothing, I used the same programmer (usbasp) same...
Saturday, 12 July 2014 - 07:21

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