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Measuring frequency based on ADC samples
Dear all I have fed the line voltage with an isolation transformer to my MCU ADC, and I'm getting 64 samples on each cycle for a 50Hz line frequency. I have calculated zero cross...
Saturday, 21 July 2012 - 11:27
Sampling mains?
I have used this configuration for generating 5v@ 200ma and want my AVR to sample the Mains. I have breadboard the circuit and the power domain works fine, but when I use my...
Sunday, 8 July 2012 - 12:18
Is there any issue with this configuration?
I want to use two polar capacitors in series to power some load. Is it safe to run them for long time?( more than 1000 hrs) is there any issues?
Tuesday, 3 July 2012 - 11:14
Cheapest MCU and power suplly.
Dear all I know that lately I'm asking wired questions. But I want to know your suggestions about the cheapest MCU with integrated RTC which will accept a battery and have about...
Tuesday, 26 June 2012 - 15:48
Cheap way of 16bit analog accuracy
I want to use Kinetis k20 series from freescale, they are around 5USD and have 16bit adc, but I wonder how can I achieve a two channel 16bit dac, can I reach the accuracy using...
Sunday, 24 June 2012 - 10:32
How do they do Cheap PCB?
All of you have seen PC main boards, They are something like 30cmX30cm multilayer board with lots of components mounted on top of them, a nice BOX and a few cables, a DVD or CD...
Tuesday, 5 June 2012 - 09:42
M16 and QTouch problem
I have used a 15mm x 15mm square area on my pcb to connect just a single button to ATmega16,and I have used the following code, but I do not get any touch sensing data. Do you...
Saturday, 26 May 2012 - 15:45
Humidity sensor
Dear all I want to know if you know a humidity sensro that can work to -80°C, I want to use it to calculate dew point. any suggestions are welcome.
Saturday, 12 May 2012 - 10:09
Embeded Database
I know that we can use SQL lite as an embedded database, But I want to know if you happen to know something that needs even lesser memory!
Wednesday, 9 May 2012 - 13:54
Chips for making Monitors
Dear all I want to know if you happen to know chips that can take a TFT as output and make them a normal PC monitor. Given me a VGA or DVI connection.
Sunday, 15 April 2012 - 13:30
SSD2119 4-wire SPI
I'm using a 3.5TFT with SSD2119 controller in 4wire spi. I want to know how should I read GRAM data in this mode, there is no clue in datasheet. The TFT is from crystalfontz "...
Saturday, 7 April 2012 - 07:58
Step motor datasheet
Dear all I want to know if you happen to know the datasheet for this step motor, Or do you know how I show figure the windings out!?
Saturday, 10 March 2012 - 08:33