MIKROE-3691

        POT 3 CLICK PID: MIKROE-3691 Weight: 23 g POT 3 Click is a Click board™ with the accurate selectable reference voltage output. By employing a high-quality 11mm, metal shaft potentiometer, this Click board™ can provide very accurate voltage output. The onboard high-resolution 12-bit ADC can detect even the smallest move, faithfully capturing the smoothness of the slider movement, while digitizing its position. POT 3 Click is also equipped with the SMD jumper, which allows the maximum reference voltage to be selected between two typically used values: 2.048V or 3.3V. The output is buffered with a rail-to-rail buffering operational amplifier, which provides constant input and output impedance. POT 3 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket. With the ability to adjust the voltage on the AN pin very accurately, this Click board™ can be used for development of applications that require voltage reference other than what is commonly available as an output from a dedicated IC. The output from the potentiometer is buffered by the high-performance rail-to-rail operational amplifier, which ensures clean and low-noise signal to the MCP3201 and VO pin of the Click Board. This Click board™ can be used in any application that requires an analog or digitized control voltage, or it can be used to build HMI applications, adding them an accurate potentiometer. HOW DOES IT WORK? This Click board™ uses a very simple design: the MCP1501, a precision voltage reference IC from Microchip is used to provide the voltage of 2.048V. This voltage is routed to the small SMD jumper labeled as VREF SEL. By moving the jumper to the 2V position, 2.048V will be applied to one end of the potentiometer. Otherwise, the potentiometer will be connected to the 3.3V rail of the mikroBUS™. The other end of the potentiometer is tied to GND, allowing to select voltage from 0V to VREF (from 0 to 2.048V or from 0 to 3.3V ranges). The adjustable voltage is available on both AN pin of the mikroBUS™ and to the + input pin of the MCP3201. The potentiometer itself is labeled as RK1191110001. It is a high-quality potentiometer from Alps Alpine. This company is otherwise known for their high-quality electromechanical components, used in many industries. The potentiometer has a carbon-based resistive surface with the resistance of 10 kΩ. It is a single-turn linear potentiometer, with 50% of resistance achieved when in the middle position. Its turning knob is not fixed: the potentiometer has 15mm shaft and a turning knob with the matching shape is delivered in the package with the Click board™. The output of the potentiometer is fed to the non-inverting input of the OPA344, a rail-torail single supply operational amplifier, from Texas Instruments. This operational amplifier is a perfect choice for this design, as it allows rail-to-rail operation, uses a single power supply of 5V, and has a stable unity gain. The OPA344 is used as a buffer, providing a constant input and output impedance. Without buffer, variable impedance would affect the reference voltage. The reference voltage IC can provide less than 10 mA, with the significant voltage drop for output currents exceeding 2 mA. Therefore, the OPA344 ensures good stability of the circuit. The second section of this click board™ consists of the MCP3201 IC, a well known 12bit ADC from Microchip. The potentiometer end terminals are connected between GND and the VREF, while the buffered voltage from the wiper is connected to the IN+ pin of the MCP3201. VREF is also connected to the reference voltage input pin of the MCP3201. That way, the whole range of the ADC is always used, regardless the chosen VREF voltage. The MCP3201 has its SPI lines routed to the mikroBUS™ so that the values can be read easily by the MCU. SPECIFICATIONS Type Measurements Applications It can be used for development of different types of HMI applications where the potentiometer can be used to provide fine control the movement or to change the intensity of a LED segment in fine steps, backlight amount of a TFT screen, etc. On-board modules MCP1501, a precision voltage reference IC from Microchip; OPA344, a single-supply, rail-to-rail operational amplifier from Texas Instruments. MCP3201 IC, 12-bit ADC from Microchip Key Features Precise and buffered reference voltage output, selectable maximum value for the adjustable voltage reference, high-quality linear potentiometer from Alps Alpine. Interface Analog,SPI Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V,5V PINOUT DIAGRAM This table shows how the pinout on POT click 3 corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Regulated Voltage Out VO 1 AN PWM 16 NC NC 2 RST INT 15 NC Chip Select CS 3 CS RX 14 NC Serial Clock SCK 4 SCK TX 13 NC Serial Data Out SDO 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Ground GND 8 GND GND 9 GND Notes Power Supply Ground ONBOARD SETTINGS AND INDICATORS Label Name Default LD1 PWR - JP1 VREF SEL Left Description Power LED Indicator Voltage reference level selection: left position 2.048V, right position 3.3V SOFTWARE SUPPORT We provide a library for the POT 3 Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards. Library Description This library allows user to check the output voltage (VOUT) of the POT 3 Click board. User can get the output voltage as 12-bit digital value (ADC only), or as averaged value calculated to millivolts (ADC + calculations). The AD converted value can be read as one conversion sample, or as averaged value with desired number of conversions. For more details check documentation. Key functions:   uint16_t pot3_read_adc( void ) - This function reads the result of AD conversion. uint16_t pot3_get_vout( uint8_t vref_sel, uint16_t nSamples ) - This function returns VOUT value calculated to millivolts, with desired number of AD conversions included in calculations. Examples description The application is composed of three sections :  System Initialization - Initializes peripherals and pins  Application Initialization - Initializes SPI driver  Application Task - (code snippet) - Reads VOUT value calculated to millivolts with 2000 conversions included in one measurement cycle. The reference voltage (VREF) of 2V is selected as default value for calculations. Results will be sent to the uart terminal every 10us * number of conversions void applicationTask()  {      voltage_mv = pot3_get_vout( _POT3_VREF_2V, 2000 );            WordToStr( voltage_mv, text );      mikrobus_logWrite( "** VOUT : ", _LOG_TEXT );      mikrobus_logWrite( text, _LOG_TEXT );      mikrobus_logWrite( " mV", _LOG_LINE );      mikrobus_logWrite( "*******************************", _LOG_LINE );  }      The full application code, and ready to use projects can be found on our LibStock page. Other mikroE Libraries used in the example:  Conversions  SPI  UART Additional notes and informations Depending on the development board you are using, you may need USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message. MIKROSDK This Click board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using. For more information about mikroSDK, visit the official page.           https://www.mikroe.com/pot‐3‐click/8‐15‐19  11mm Size Metal Shaft Reflow Type RK119 Series Number of resistor elements Single-unit Mounting direction Vertical type Fixing method of bushing Guide Shaft types Flat Length of the shaft 15mm Detent Without Total resistance 10kΩ Resistance taper 1B Switch travel 0.5mm Operating temperature range -40℃ to +85℃ Electrical Performance Total resistance tolerance ±20% Rated power 0.05W Maximum operating 10V DC voltage Residual resistance 50Ω max. Insulation resistance 100MΩ min. 250V DC Mechanical Performance Voltage proof 300V AC for 1 minute or 360V for 2s Total rotational angle 300°(+10, -5)° Rotational torque 7.5±3.5mN·m Stopper strength 0.5N·m About Cookies on this site： This site uses cookies to improve your onlinestrength experience. By continuing Push-pull 100N max. to use this site without changing your cookie preferences, we will assume that you are agreeing to our use of cookies. For more information, visit our Terms of Use. Accept Vibration 10 to 55 to 10Hz/min., the amplitude is 1.5mm for all the frequencies, in the 3 direction of X, Y and Z and for 2 hours respectively Durability Operating life 15,000 cycles Specifications Contact Single pole and single throw switches arrangement Travel 0.5±0.3mm Operating force 5±2N Operating life 20,000 times Ratings 0.1A 5V DC (1mA 5V DC min. rating) Contact resistance 100mΩ for initial period, 200mΩmax. after operating life. Insulation resistance 100MΩ min. 250V DC Voltage proof Minimum order unit Japan (pcs.) Export 300V AC for 1 minute or 360V AC for 2s 480 480 Dimensions About Cookies on this site： This site uses cookies to improve your online experience. By continuing to use this site without changing your cookie preferences, we will assume that you are agreeing to our use of cookies. For more information, visit our Terms of Use. Accept Land Dimensions Viewed from mounting side. Packing Specifications Tray Number of packages 1 case / Japan (pcs.) 1 case / export packing Export package measurements (mm) 480 480 300×240×270 Soldering Conditions About Cookies on this site： This site uses cookies to improve your online experience. By continuing to use this site without changing your Example of we Reflow Soldering cookie preferences, will assume that youCondition are agreeing to our use of cookies. For more information, visit our Terms of Use. Accept 1. Heating method Double heating method with infrared heater. 2. Temperature measurement Thermocouple 0.1 to 0.2 Φ CA (K) or CC (T) at soldering portion (copper foil surface). A heat resisting tape should be used for fixed measurement. 3. Temperature profile A B C D E F G H No. of reflows 260℃ 230℃ 180℃ 150℃ 2 min. 3s 40s 4 min. 2 time max. 1. When using an infrared reflow oven, solder may sometimes not be applied. Be sure to use a hot air reflow oven or a type that uses infrared rays in combination with hot air. 2. The temperatures given above are the maximum temperatures at the terminals of the potentiometer when employing a hot air reflow method. The temperature of the PC board and the surface temperature of the potentiometer may vary greatly depending on the PC board material, its size and thickness. Ensure that the surface temperature of the potentiometer does not rise to 250℃ or greater. 3. Conditions vary to some extent depending on the type of reflow bath used. Be sure to give due consideration to this prior to use. Reference for Hand Soldering Tip temperature 350±10℃ Soldering time 3(+1, 0)s No. of solders 1 time About Cookies on this site： This site uses cookies to improve your online experience. By continuing to use this site without changing your cookie preferences, we will assume that you are agreeing to our use of cookies. For more information, visit our Notes are common to this series/models. Terms of Use. Accept 1. This site catalog shows only outline specifications. When using the products, please obtain formal specifications for supply. 2. Please place purchase orders per minimum order unit (integer). 3. Products other than those listed in above products are also available. Please contact us for details. 4. This products can be used in vehicles. Although these products are designed to perform over a wide operating temperature range, please ensure that you receive and read the formal delivery specifications before use. About Cookies on this site： This site uses cookies to improve your online experience. By continuing to use this site without changing your cookie preferences, we will assume that you are agreeing to our use of cookies. For more information, visit our Terms of Use. Accept