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Forum: Microcontrollers (MCU) 05-08-2017, 12:04 PM
Replies: 1
Views: 832
Posted By DRN_231
ATmega328 High Voltage Programming

Hi All! Someone tried to save atmega328 with high voltage programming? I use the AVR Dragon to save 20 microcontroller with a locked fuse! |About I signed up on the adapter to connect the device I...
Forum: Projects and Advices 07-20-2016, 06:05 PM
Replies: 1
Views: 4,336
Posted By DRN_231
Suggest IC for multi channel Input

One of my application have a maximum of 20 inputs, all voltage levels have (24V or 0V DC). I need to check whether the input is present or not. Previously transistor based Opto coupler are used for...
Forum: Beginners 06-03-2016, 09:01 AM
Replies: 2
Views: 6,941
Posted By DRN_231
A simple N MOSFET will do. there are...

A simple N MOSFET will do.
there are thousands.

Look for:
* VDS > 30V (better 40V)
* V_GS_TH < 3V
* R_DS_ON < 50mOhms (At 4.5V V_GS or below)
Forum: Microcontrollers (MCU) 05-15-2016, 10:29 AM
Replies: 1
Views: 7,579
Posted By DRN_231
ADC Conversion Delay Time

calculate how much time is required for adc conversion in PIC microcontroller
for 8MHz crystal PIC18f887

In MikroC
where delay have to add?

Before ADC read
adc_read (0);
Forum: Beginners 04-22-2016, 08:03 PM
Replies: 1
Views: 5,794
Posted By DRN_231
LiPo battery storage?


How do you store a Lipo? Some time ago, when i knew i wasn't going to use my drone for a while, i charged it's battery before not using it for a few months.
After those few months, i found...
Forum: Microcontrollers (MCU) 04-01-2016, 05:00 PM
Replies: 2
Views: 7,018
Posted By DRN_231
How to switch between 12/24 hour format RTC DS1307

I too is one who has found this difficult. But when I see this forum it looks like some one showing the color of milk to blind. Why not give the details from start to the end without giving so many...
Forum: Microcontrollers (MCU) 02-26-2016, 07:21 PM
Replies: 1
Views: 6,513
Posted By DRN_231
MCP3913 Analong Input

Hi everyone, can i feed the MCP3913 with 0.7Vac rms signal? The datasheet say that the maximum input voltage is +-1V but this is AC or DC? I have a CT that give me an 0.7Vac rms output (+0.9898V to -...
Forum: Beginners 11-14-2015, 08:53 AM
Replies: 2
Views: 6,646
Posted By DRN_231
3G Cell Phone Signal Booster

Hi all, how are you..

I'm trying to build my own 3G cell phone booster. The idea is to catch the 2100 MHZ frequency and transmit it in my home but I don't know where to start.

If someone can...
Forum: Beginners 11-05-2015, 05:41 PM
Replies: 1
Views: 6,534
Posted By DRN_231
Analog wifi repeater - possible?

I want to get access to the wifi-signals outside my house from within the house.

The obvious solutions is an internal wifi-card with a detachable antenna, or a wifi repeater unit, and then using...
Forum: Microcontrollers (MCU) 10-29-2015, 02:25 PM
Replies: 0
Views: 6,954
Posted By DRN_231
ISP and JTAG headers

I am fairly new to micro-controller programming. I am trying to read the code on a circuit containing an Atmel ATmega328P.

Here is a photo of the ISP header on the board:...
Forum: Beginners 10-26-2015, 04:14 PM
Replies: 0
Views: 5,617
Posted By DRN_231
Rapid Fire Mouse

I have no knowledge as to how circuits work and I've seen a few videos like the use of 555 ships and methods of creating a rapid fire mouse. my question is is there a rapid fire mod that will allow...
Forum: Beginners 10-15-2015, 03:25 PM
Replies: 1
Views: 6,728
Posted By DRN_231
110 to 12 volts reduction

I need to know the easiest and cheapest way to reduce a 110 plug to a 12 VDC output. Right now I am using phone charges for my project, but I want to build my own boxes with the proper circutry...
Forum: Projects and Advices 10-11-2015, 02:05 PM
Replies: 0
Views: 9,428
Posted By DRN_231
Some way to disable auto-standby on TV soundbar

I just bought a Philips HTL2101A/05 soundbar, but have discovered a really annoying feature that is built into ALL soundbars sold in the EU... After a period of inactivity, to meet EU regulations,...
Forum: Projects and Advices 09-24-2015, 04:38 PM
Replies: 1
Views: 9,245
Posted By DRN_231
RS232 / TTL converter pin4

I am looking for a RS232/TTL converter which works on 3.3V TTL logic levels/+-5V serial, and, most importantly, is able to power up pin 4 or pin 7 of RS232 side with 5V. All of the converters I found...
Forum: Beginners 08-26-2015, 06:41 PM
Replies: 1
Views: 7,378
Posted By DRN_231
Capacitors & Resistors in Amplifiers

What's the benefit of using a capacitor and a resistor in an amplifier circuit to create a gain? Why not use just resistors?
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