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I have a task to create a device that to reproduce a voice. The quality of the voice may not be good. It rather should be bad (having in mind that the device must cost efficient). Since I have non experience doing such devices I refer to you for some advises. I was googling last few hours to...
What standard symbol stands for active energy?
For example:
P stands for active power
Q stands for reactive power
S stands for apparent power
than what symbol stands for active energy (kWh)?
Excuse my bad English.
Hi,
I am trying to understand the meaning of SF(Spread Factor). Reading the sx1272.pdf I came across to a parameter called chip rate. Here is an example of the .pdf
Spreading factor:
The spread spectrum LoRaTM modulation is performed by representing each bit of payload information by...
Hello everyone,
I have task to create a simple radio communications between two uControllers. That's why I am asking for help. What radio module would you suggest for such application? The requirement is to use a simple communication protocol and well known interface as UART, I2C or SPI...
Thank you for your reply deepsetan. The sensing range of the capacitive proximity sensors I found is too short (up to 100mm) What I need is some sensor which is able to measure distance with range greater than 4meters. It should be a single sensor that detects the front vehicle.
I need to find a distance sensor which would be able to measure a distance between two cars/trucks up to approximately 4 meters. The interface is not important. I shall be using a uController to detect the distance and to trigger signal when distance exceed e.g. 2meters. No matter what type of...
Hello everyone.
I have to develop a PWM that will supply fuel cell (or something like that). This is the customer's concept: Transformer (220VAC to 15VAC) - rectifier - PWM - fuel cell.
The PWM module should regulate the average value of the output voltage. Note that the output voltage should...
Hello everyone!
My new project requires, remote controlling relays. I chose to use IR emitter-receiver couple. Since I have never had something to do with IR sensors, I am asking you for help.
Here is my question:
What characteristics (e.g light wavelength, power, type etc.) ought to match, in...
Thank you for reply.
The only think I found in regards to programming R3910 was this: https://www.onsemi.com/pub/Collateral/AND9106-D.PDF
Although, it is quite insufficient in terms of developing interfacing code.
What I need is some document describing what set of commands is required to...
Hello,
I have to create interface device between PC and R3910.
I will use PIC18F4550 to read/write the R3910, based on hyper terminal commands of the PC.
Looking the datasheet:
https://www.onsemi.com/pub_link/Collateral/R3910-D.PDF
I can't see the commands corresponding to read register, write...
Hello everyone.
Does anybody know a specific chip that can convert low level input (Vih ~ 1V && Vil ~ 0.6V) to 3.3V signal level that suits the microcontroller.
I have to read a one wire serial data from DSP processor via 3.3V powered PIC microcontroller.
The problem is that the uC wouldn't...
Thank you for your prompt reply!
I tought so too. What confused me is, that I anticipated real numbers (what you showed me) rather than relative range (0.8 - 1.1)*rated_voltage. Anyway, thank you again.
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