Experience a new level of accuracy with PDB081-P10-103B1, and PIC32MZ2048EFM100 to fine-tune your electronics for superior performance
Unlock precision control: The art of trimmer potentiometers
Published Oct 10, 2023
Click board™
POT 5 Click
Dev. board
Curiosity PIC32 MZ EF
Compiler
NECTO Studio
MCU
PIC32MZ2048EFM100
We aim to empower your projects with the precision and reliability of our trimmer potentiometers, allowing you to fine-tune settings and achieve optimal performance
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Hardware Overview
How does it work?
POT 5 Click is based on the PDB081-P10-103B1, a high-quality 8mm micro rotary 10k potentiometer from Bourns, providing very accurate voltage output. The PDB081-P10-103B1 features a 1mm plastic shaft (2mm pin length), low profile, without detent, and linear tapers. This potentiometer operates over a wide temperature range, withstanding 50V maximum voltage. This rotary potentiometer offers 5Ω maximum residual resistance, 0.03W power rating, and 100mV maximum sliding noise. Its typical applications
include consumer white goods, test and measurement equipment, communications and laboratory equipment, and other applications requiring an analog or digitized control voltage. The output signal of the PDB081-P10-103B1 can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip using a 2-wire I2C compatible interface, or can be sent directly to an analog pin of the mikroBUS™ socket labeled as AN. The selection can be performed using an
onboard SMD switch labeled as VSEL, placing it in an appropriate position marked as AN or ADC. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
Features overview
Development board
Curiosity PIC32 MZ EF development board is a fully integrated 32-bit development platform featuring the high-performance PIC32MZ EF Series (PIC32MZ2048EFM) that has a 2MB Flash, 512KB RAM, integrated FPU, Crypto accelerator, and excellent connectivity options. It includes an integrated programmer and debugger, requiring no additional hardware. Users can expand
functionality through MIKROE mikroBUS™ Click™ adapter boards, add Ethernet connectivity with the Microchip PHY daughter board, add WiFi connectivity capability using the Microchip expansions boards, and add audio input and output capability with Microchip audio daughter boards. These boards are fully integrated into PIC32’s powerful software framework, MPLAB Harmony,
which provides a flexible and modular interface to application development a rich set of inter-operable software stacks (TCP-IP, USB), and easy-to-use features. The Curiosity PIC32 MZ EF development board offers expansion capabilities making it an excellent choice for a rapid prototyping board in Connectivity, IOT, and general-purpose applications.
Microcontroller Overview
MCU Card / MCU
Architecture
PIC32
MCU Memory (KB)
2048
Silicon Vendor
Microchip
Pin count
100
RAM (Bytes)
524288
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Curiosity PIC32 MZ EF as your development board.
Track your results in real time
Application Output
1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.
2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.
3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.
Software Support
Library Description
This library contains API for POT 5 Click driver.
Key functions:
pot5_read_voltage- This function reads raw ADC value and converts it to proportional voltage levelpot5_convert_voltage_to_percents- This function converts analog voltage to potentiometer position in percentspot5_set_vref- This function sets the voltage reference for POT 5 Click driver
Open Source
Code example
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.
/*!
* @file main.c
* @brief POT 5 Click Example.
*
* # Description
* This example demonstrates the use of POT 5 click board by reading and displaying
* the potentiometer position.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes the driver and logger.
*
* ## Application Task
* Reads and displays on the USB UART the potentiometer position in forms of voltage and
* percents once per second.
*
* @author Stefan Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "pot5.h"
static pot5_t pot5; /**< POT 5 Click driver object. */
static log_t logger; /**< Logger object. */
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
pot5_cfg_t pot5_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
pot5_cfg_setup( &pot5_cfg );
POT5_MAP_MIKROBUS( pot5_cfg, MIKROBUS_1 );
err_t init_flag = pot5_init( &pot5, &pot5_cfg );
if ( ( ADC_ERROR == init_flag ) || ( I2C_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
float voltage = 0;
if ( POT5_OK == pot5_read_voltage ( &pot5, &voltage ) )
{
log_printf( &logger, " AN Voltage : %.3f V\r\n", voltage );
log_printf( &logger, " Potentiometer : %u %%\r\n\n",
( uint16_t ) pot5_convert_voltage_to_percents ( &pot5, voltage ) );
Delay_ms( 1000 );
}
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
