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Hi all, good day.
I am designing a python application running in Raspberry Pi which send out serial message to print on embedded thermal printer.
the communication is using USB to TTL module (CP2102 chip).
currently my application able to print successfully, but there is one issue is, if the...
Hi Klaus, thanks for your fast reply. I am sorry for my bad explanation
My safety means that protect anyone who are doing testing in that area from electrical shock.
I saw most of the water heater having ELCB for protection so i thought it might be a good protection.
But I not sure is there...
Hi all, I am planning to make a small area in my study room for my electronic project.
Some times might need to wire up for DC power supplies and other AC equipment, so I am planning to include some safety feature on my AC connection which able to protect user from electrical shock.
May I ask...
Hi Klaus, thanks for your prompt reply
The sensor hardware and sensor bus that you mentioned is input of PLC?
while for the calculation, my PLC is using instruction function to read the modbus, then convert the reading from decimal to hex.
The current issue is that, in my PLC, i can see 3...
Hi all, I am having a system which using PLC to read 3 weighing indicators with Modbus.
but some times the reading that is send from indicator seems like hanging and causing system to overweight.
The reading hang is only happen to one of the indicator instead of all 3 together.
the baud rate...
Hi all, I am require to make a circuit which will give On/Off output if the current from current transformer is high.
May I know what's the requirement of such design?
For this circuit, I do not need to read the actual amp, do not need high accuracy because the purpose of this circuit just use...
Hi, i am designing a system which require a Raspberry Pi to connect mobile phone nearby automatic. The mobile phone ID and bluetooth name is preset in Raspberry Pi.
The system need to avoid pairing manually. Rasberry Pi will scan devices nearby, once found the devices name that is matched with...
Alright. I had tested the PIC output and it is exactly like what you said. It did not change its state until the code ask it to do so. Thanks for your info.
I see. so you recommend me to read the PORT and write the whole PORT instead on setting the pin one by one during changing state?
and...
alright. sorry, i have one more question.
if my output require something like blink, like 500ms interval. so i need another timer for the blink? while i still want other output to work independently.
Hi Klaust, for PIC, i can set single output. I just curious on how to maintain the output state. Brian had answered it.
Anyway, thank you very much for your guidance.
Brian, sorry that i havent test the output without changing it and proceed to next instruction.
so you mean even like PIC...
Hi, thanks for all the guide and info.
but i still have doubt on the output state, because from what i know, PIC output is not latched.
for simple example, 3 sensors controlling 3 LEDs, when there is input, then the output must on.
how do you make all 3 LEDs constantly on if all 3 input is high.
Hi, Brian, thanks for your guide.
I am still trying on the code. will feedback here once i have any progress.
Hi thanks for your code. i will try it.
Hi, thank you very much for your advice. I do have Arduino Uno with me, just that I had made PIC board that comes with MOSFET so that i can...
HI Klaus, thanks for giving advice. sorry for my mistake. the timer value that i set is 360ms.
actually the timing do not need to be accurate. as long as can see the LED slowly fade in and out.
i just want to implement interrupt timer to PWM LED fading so that later on i can change state with...
Hi all, is that possible to implement timer interrupt to a LED fading PWM function?
microcontroller: 16F628A
compiler: MikroC
Objective:
LED fade in and out slowly by adjusting the PWM.
I had developed a code that working in this way
using timer so slowly increase the PWM duty cycle. However...
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