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Hi,
I have a 16-bit sigma delta converter with 16 ksps and I want to know if it matches the single/three phase power meter.
Does any one know what much should be the resolution if no oversampling is forecasted?
How much should be the accuracy on voltage measurement? I have found requirement on...
Hi FvM,
The measurement conditions is as following:
1. I powered the sensor by 3.3V generated by E3648A (Agilent)
2. I connected sensour output to multimeter 34411A (Agilent)
3. I let the sensor in a constant (ambiant) pressure: left at table - no special environement
4. I sampled the sensor...
Hi FvM,
You are right the MPX3202 is an absolute pressure sensor.
I want to use this sensor to make an altimeter but I didn't succed to have the required accuracy.
I have read 210 samples at ambiant pressure in Input variable(I am using scialb; see attachement)
then I computed the pressure...
Hi all,
I want to encrypt/decrypt files using a free PC tool then compare the result of used algorithms like done in:
https://en.wikipedia.org/wiki/Block_cipher_modes_of_operation
I want to use an STM32L16x device which embeds an AES-128 crypto engine but I am missing a pc tool to validate my...
Hi everybody,
Does anyone tried to interface HS1101 humidity sensor with aSTM32L1 microcontroller?
I am thinking to use charge/discharge method using the analog comparators already built-in?
Thanks
lowpowermcu
Hi all,
I want to generate a sine wave using my Digital to Analog Converter so I think I should generate the samples using excel (sine wave at a 3 Hz and 320 samples) once done I add it as a constant array in my code.
Is there somebody who did somethink like that?
MCU Lüfter
Hi guetguet,
because I am using the ARM library, I'll try to test my code as you said and I'll keep you informed.
@horace I tested with zeroing the LSB but w/o success, I didn't find in ARM DSP library running (moving) average algorithm.
MCU Lüfter
Hi all,
I am acquiring adc voltage using stm32 device and after 1000 samples I am doing the mean value but I have found that this is not sufficient in my case (the value (average) I got is not stable) I thought to increase the number of samples (size of buffer) but I face RAM size issue so I...
Hi rohitkhanna,
Figure 40 gives the Source Output Levels in function of GRAM data
""106 page hi-tech manual. You kiddin' me ?"" I didn't understand you point.
MCU Lüfter
Hi FvM,
My sensor is MPX2102ASX and according to research this sensor provides the relative pressure and not the absolute one.
As an example the sensor provides about 272.72mB so I need to add the atmospheric pressure at sea level which is equal to ~1013mB
Consequently the pressure where I am...
Hi Araxnid,
Are you sure you are downloading the code into flash memory. It could you are using
be the simulator
Check Project->Options-> Debugger . it should be ST-Link if you are using the STM32F4 discobery
MCU Lüfter
Hi Araxnid,
The start-up sequence is:
1. SystemInit
2. IAR startup and then to main
So IAR will automatically jump you to main.c and you don't need to handle it.
MCU LÜfter
Hi all,
I am interfacing a pic microcontroller controller to MPX2102 pressure sensor and as you know the atmospheric pressure is equal to
Atmospheric pressure = Po + measuresured pressure by sensor
with Po is the pressure at sea level and 25 °C.
I want to have the best accuracy so I an...
Hi all,
I have some progress and I want to share it with you.
I have downloaded some test images from http://www.lagom.nl/lcd-test/
and I started changing the value of all regissters till I find that Power Control 3 register R18 and Power Control 4 register R19 have impact on LCD contrast. In...
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