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Ok. I didn't check it on oscilloscope for noise or fluctuations (as I don't have it in my home setup) but when checked on DVM, it constantly shows 2.88V.
@KlausST Please find attached asm code in .txt file.
Yes column 1 & 2 are real values measured on actual hardware using DVM. Also, I checked the refrence voltage for entire range of input voltage i.e. 0-1Volts, its rock steady. Sorry, i cant publish circuit schematic here as it is developed by...
adding table by adding column for voltage at pic analog channel after amplification below:
Volts
(in mV)
V at AN4 (in Volts-
post amplification)
Expected
ADC count
Actual
ADC count
0
0
0
0
50
0.13
51
46
100
0.26
102
97
150
0.39
154
148
200
0.52
205
199
250
0.65
256
248
300
0.78...
I hope you are able to view and download my mplabx project folder through link I shared. @FvM @KlausST
Please find the adc reading (expected vs actual) for 0-1V with step of 50mV
Volts
(in mV)
Expected
ADC count
Actual
ADC count
0
0
0
50
51
46
100
102
97
150
154
148
200
205
199...
Thanks for the reply.
@FvM Yes, the code is not complete since I was keen to post the most obvious problem areas (ofcourse in my openion ;)). However, I am attaching the complete MPLABX project (in zip file), if that helps. I did not type casted ADRESH, since its a 1 byte register.
@KlausST...
Hello all, I am using PIC16F886 to read the input voltage 0-1 Volt (amplified to 0-2.88V) at channel AN4. I have set +Vref=2.88 (external) and -Vref=Vss. I am displaying the measured voltage on 3 digit 7 segment display. The problem I am facing is- I get the displayed voltage lesser than the...
Hello andre, as already mentioned
1. I want to use one of the USB port of RPi3b+.
2. I don't want to use Tx/Rx of pi (because I know how it can be done with these pins. ;-)).
So what could be the solution in this case? I am sure that it is possible. I have thought of the solution mentioned...
Thanks andre for your reply. I will try to be more clear.
As mentioned Data logger has RS232 interface.
I need to know about this interfacing approach. Am i interfacing both in a correct way?
Dear friends hope you all are doing fine!
I have one temperature logger with RS232 out on its back panel. which throws out the instantaneous temperature reading every second.
I need to connect the RS232 output of temperature logger to one of the USB ports of raspberry pi 3b+. I dont wish to use...
hello guys, thinking that XC8 might be better option i have installed XC8 and trying to compile the code but i get loads of warning like following:
I am not getting this, what will be the solution to this errors? Thank you.
Hello friends thanks for your replies. I tried every solution given but couldn't get it working. However, to keep every variables in float I written the code like;
float tempvar;
tempvar = AdcValue /10;
DecTemp = (tempvar*0.001);
The reason for extra tempvar is to keep everything in float. And...
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