Hi all,
Can i connect the pic's :
Vref+ = 5V (Vcc)
VRef- = 12V
Measure at 12.5V
and get the reading as 0.5V = 102.4 unit after the conversion of 10 bits...
Type: Posts; User: kblim; Keyword(s):
Hi all,
Can i connect the pic's :
Vref+ = 5V (Vcc)
VRef- = 12V
Measure at 12.5V
and get the reading as 0.5V = 102.4 unit after the conversion of 10 bits...
Thank you aratti, I will study the pdf.
By the way, what is the maximum Vref-, Vref+ and the voltage the pic can measure?
Maybe a low ohmic resistor 0.01ohm 5W is suitable in the application.
The hall effect sensor normally is very expensive in my country.
Let say the total amp flows is 15A,:
Voltage dropped =...
Thank you, aratti.
Really appreciate your suggestion 1 and 2. Your suggestion one really help me to protect my resistor and the opto couple.
However please forgive me because didn't give the...
Hi LinkMTech,
thanks for your help. I will try it out, but if you can provide me the simple schematic or guidance to setup the op-amps without offsetting the voltage, that will be good. I'm not...
Hi,
The signal is a output voltage form a sensor and it is connected to the ECU (engine control unit) that will pulsing the fuel injector. The pic is always monitoring the signal (on...
Hi Melanie,
This is my explanation:
1.The J3.1 is the incoming signal(iV) that i want to measure, so i connect it to RA4.
2.The iV also connect to a relay at NC. At the normal...
Hi Melanie,
First of all thanks for your reply. I really appreciate it.
Attached is the schematic. The problem happens at PortA.4. However I already connect the incoming signal to PortB.7...
Anyone can explain to me:
The maximum recommended impedance for analog sources is 10 kΩ. This is required to meet the pin
leakage specification.
1.What does this means?
2. How to measure...
Hi all,
I have tested the setting, but the PORTA.4 still pull down the signal to 0v.
Just for your info, the signal is Voltage fluctuated between 0 to .9 v.
don't know where i did...
Thank you Melanie,
Thanks for your reply. I have learn something what i have missed. I will try them out and post the result later. Thanks!
Really appreciate your help, Melanie
Thanks for the reply.
Below are my declaration
OSCCON = %01101110 ' 4 MHz, primary clock, internal RC
PIR1 = %00000000 ' clear all flags particularly A/D IF bit 6
SSPCON = %00000000 ...
Thanks for your reply... I just try for 2.2k resistor but also give me the same result. The Signal voltage to measure also drop to 0v...
From the internet surfing...... the PortA.4 is open...
Hi all,
I'm having problem to use the porta.4 as the analog input for PIC16F88... When i connect the signal line (0.1v to 0.9v) to porta.4, the signal voltage will become 0v. I have tried to...
Hi all!
I'm currently using the at+cipsend to retrieve the webpage... still always return bad request..
Anyone have the idea please help. Thanks!
Thanks!
The only thing if using usb to serial converter, most probably we need to use the hard reset button to pull the MLCR to Gnd. Is the above statement true?
If the loader file that I have...
Thanks for both of you of the reply.
By the way, do I need to setup all the configuration such as the ADC, comparator in the bootloader file? Or when setup it up in the program code?
Please...
Hi all,
It is so exciting that we can program the chip without using the real programmer.
Previously, i was using my old pc with parallel port and epic programmer to program the pic. But since...
Yes, sometime buying PIC will be difficult. Anyhow, you can give a call to Mobicon in Old Klang road. They are selling various type of PICs with resonable price in quatity of X10 pieces.
I...
Hi all,
Please help me. I am developing a board for the filling machine. Facing problem when I HIGH the PortA.1 in 16F88, the normal 5Vcc will drop to 4.8XX volt.
This make my...
HI,
actually i think you can download the pdf manual version in www.picbasic.com.
Hi all,
I was previously using the SerOut2 to send data, but the data line was sharing by few PICs and I have used Open Mode.
Recently porting my code by replacing SerOut2 with the Debug...
Hi all,
Just wonder how to define the debug to communicate with the open mode when receiving serial data from other device. Using the open mode because need to share the data line with few...
Hi all,
The use of GSM phone as the communication module via SMS is the successful one. I have use this method to collect the data from the remote site.
Discussion here are more on...
Hi all,
The use of GSM phone as the communication module via SMS is the successful one. I have use this method to collect the data from the remote site.
Discussion here are more on...