In this tutorial we are going to discuss how to use the inbuilt PIC16fA ADC. We will be reading the ADC values from chanel Zero and transmitted on UART at . You need to actually read the datasheet, particularly the chapter on the A/D. Two obvious problems from a quick look at the code are that you. Apart from a large number of digital I/O lines, the PIC16F contains 14 and stores the conversion results into the ADC registers (ADRESL and ADRESH);.

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A temperature sensor for instance may give out 2. So that everyone can be benifited out of it. Is used to read the data from the ADC channel 4. If you are an absolute beginner, then please visit the complete list of PIC tutorials here and start learning. I really appreciate your efforts and time you created for the whole explaination. Once the pin is analog, requesting digital logic will result in wrong info.

New Light Weight Champion – PIC16F887

You can probably filter it out by taking an average of several readings. He’s getting the large noise due to blatant acquisition time violations. Project 9 — Analog Sensor: The range goes from 20mv to 1. Once you get it basically working, you can do some low pass filtering on the readings to reduce the remaining one or two counts of noise about the average.

Thus the final circuit I have piic16f887 this. Replace the original configuration plc16f887 with new configurations settings.

ADC configuration in PIC16f887

So what should we do? Link that explains the difference between accuracy, resolution, precision and sensitivity: It is often possible to increase the effective resolution beyond 10 bits, as the noise ‘dithers’ the ad to produce intermediate values when averaged. Project 4 — Analog Sensor: To get the result, an mathematics formula are required to apply into our C-code for calculation.


The bits 3, 4 and 5 are forced to adf 0 while the others are left to be in their previous values. PIC16F has increased the analog input to 14 channels, and every pin can be configured to analog or digital independently.

This pin is RE3. Everything intertwined, as in your code, will get you into trouble when you try to grow the system beyond the afc of demos.

Simplest way to configure is to create a new C project for it.

As you might have notice, analog input is getting more important because more sensors come with analog output as it is the easiest method to deliver wide range of information by just single wire interface.

Project 6 — Analog Sensor: I am taking variable input range 85 to 45 VDC by using voltage divider. Please reply me with by sending me the mail. By stabilization time you meant the equations from section 9.

analog-modules – MikroElektronika

But it is pic16v887 rated to drive 50pF. First, it is the configuration bit. They recommend adding a load as shown: In this tutorial we are using a 7-segment display to verify the output.

As usual simulate the code using Proteus before actually go with our hardware, the schematics of the project is shown below:. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Quote and Order boards in minutes on https: The analog channels AN0 to AN7 are highlighted for you. May I just add that resolution and accuracy is not the same thing?


I am still new to this and need some guidance. Thanks for your relies so far It serves me well and there is nothing much I can complain about. In project 1, you are about to experience how to program a LED chaser which can be increase the running speed by just a single button pushing.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Hence we have to add up these to registers picc16f887 get our bit ADC value.

Here we have read the ADC value from the pot and converted it to the actual voltage by ;ic16f887 the output as volts as shown in program. Should I be doing the mean of several acquisitions? Therefore you will need to get the compiler installed earlier. This project main purpose is used a joystick to control the direction moving of Three Transwheel Flexibot with wireless communicate method.

Almost all the sensors like temperature sensor, flux sensor, pressure sensor, pic16f88 sensors, voltage sensors, gyroscopes, accelerometers, distance sensor, and almost every known sensor or transducer produces an analog voltage of 0V to 5V based on the sensors reading.

I will talk about the utilization of internal crystal and ADC in coming volume, stay tuned!