# Title: Thermostat Click Board™ ## Description: If you need a temperature sensor and relay in one device, you should look no further than the Thermostat Click Board™. It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat. The Thermostat Click Board™ carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads. The click runs on either 3.3V or 5V power supply and communicates with the target MCU over I2C interface. TEMPERATURE RANGE The IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C. MAX7502 TEMPERATURE SENSOR MAX7502 temperature sensor measures temperature, converts the data into digital form using a sigma-delta ADC, and communicates the conversion results through an I2C-compatible 2-wire serial interface. It accepts standard I2C commands to read the data, set the overtemperature alarm trip thresholds, and configure other characteristics. LOW POWER CONSUMPTION The MAX7502 temperature sensor typically uses only around 250 µA, and in shutdown mode around 3 µA. With such low power consumption, it is very suitable for home automation devices. ENABLE/DISABLE THERMOSTAT FUNCTIONALITY There is also the TE (thermostat enable) pin on the mikroBUS™ pin socket for enabling (high level) or disabling (low) of the thermostat functionality. This is accomplished via the SN74LVC1G126 single bus buffer with 3-state output IC, which serves as an electronic switch between temperature sensor IC output pin and the relay driver circuit. This way the relay can be permanently disconnected from the sensor IC output. A feature like this can be useful when the sensor IC is only used as an measuring device, or if the thermostat needs to be temporarily disabled. APPLICATION HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc. SPECIFICATIONS Type Temperature & humidity Applications HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc. On-board modules MAX7502 IC digital temperature sensor Key Features MAX7502 temperature sensor, SN74LVC1G126 single bus buffer, G6D PCB power relay, I2C interface, either 3.3V or 5V power supply, Interface GPIO,I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout on the Thermostat Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Hardware Reset for MAX7502 RST# 2 RST INT 15 NC Thermostat enable TE 3 CS TX 14 NC NC 4 SCK RX 13 NC NC 5 MISO SCL 12 SCL Serial Data Input/Output Line NC 6 MOSI SDA 11 SDA Serial Data Clock Input Power supply +3.3V 7 +3.3V +5V 10 +5V Power supply Ground GND 8 GND GND 9 GND Ground JUMPERS AND SETTINGS The table below gives information about the onboard jumpers. Designator Name Default Position Default Option Description JP1 PWR.SEL. Left 3.3V Power Supply Voltage Selection 3.3V/5V, left position 3.3V, right position 5V LEDS, BUTTONS AND SWITCHES The following table gives information about onboard LEDs, buttons and switches. Designator Name Type (LED, BUTTON…) Description LD1 PWR Power LED CN1 2-pole PCB terminal block 5.08mm For output device connection (heater/fan…) ## Product type: Click Board ## Vendor: Mikroelektronika d.o.o. ## Tags: Analog Devices, Click Board, Maxim Integrated, MikroE, Sensor, Temp&Hum, Temperature ## Price range: 16.1 - 16.1 GBP ## Link: https://thedebugstore.com/products/mikroe-2273-thermostat-click-board-uk ## Compare-at price range: 23.0 - 23.0 GBP ## Options - Title: Default Title ## Collections - [New Products](https://thedebugstore.com/a/llms/collections/new-products-debug-store) - [Mikroelektronika d.o.o. 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If you need a temperature sensor and relay in one device, you should look no further than the Thermostat Click Board™. It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat.

The Thermostat Click Board™ carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C.

The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads.

The click runs on either 3.3V or 5V power supply and communicates with the target MCU over I2C interface.

TEMPERATURE RANGE

The IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C.

MAX7502 TEMPERATURE SENSOR

MAX7502 temperature sensor measures temperature, converts the data into digital form using a sigma-delta ADC, and communicates the conversion results through an I2C-compatible 2-wire serial interface.

It accepts standard I2C commands to read the data, set the overtemperature alarm trip thresholds, and configure other characteristics.

LOW POWER CONSUMPTION

The MAX7502 temperature sensor typically uses only around 250 µA, and in shutdown mode around 3 µA. With such low power consumption, it is very suitable for home automation devices.

ENABLE/DISABLE THERMOSTAT FUNCTIONALITY

There is also the TE (thermostat enable) pin on the mikroBUS™ pin socket for enabling (high level) or disabling (low) of the thermostat functionality. This is accomplished via the SN74LVC1G126 single bus buffer with 3-state output IC, which serves as an electronic switch between temperature sensor IC output pin and the relay driver circuit.

This way the relay can be permanently disconnected from the sensor IC output. A feature like this can be useful when the sensor IC is only used as an measuring device, or if the thermostat needs to be temporarily disabled.

APPLICATION

HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc.

SPECIFICATIONS

Type Temperature & humidity
Applications HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc.
On-board modules MAX7502 IC digital temperature sensor
Key Features MAX7502 temperature sensor, SN74LVC1G126 single bus buffer, G6D PCB power relay, I2C interface, either 3.3V or 5V power supply,
Interface GPIO,I2C
Compatibility mikroBUS
Click board size L (57.15 x 25.4 mm)
Input Voltage 3.3V or 5V

PINOUT DIAGRAM

This table shows how the pinout on the Thermostat Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes Pin Mikrobus logo.png Pin Notes
Hardware Reset for MAX7502 RST# 2 RST INT 15 NC
Thermostat enable TE 3 CS TX 14 NC
NC 4 SCK RX 13 NC
NC 5 MISO SCL 12 SCL Serial Data Input/Output Line
NC 6 MOSI SDA 11 SDA Serial Data Clock Input
Power supply +3.3V 7 +3.3V +5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground

JUMPERS AND SETTINGS

The table below gives information about the onboard jumpers.

Designator Name Default Position Default Option Description
JP1 PWR.SEL. Left 3.3V Power Supply Voltage Selection 3.3V/5V, left position 3.3V, right position 5V

LEDS, BUTTONS AND SWITCHES

The following table gives information about onboard LEDs, buttons and switches.

Designator Name Type (LED, BUTTON…) Description
LD1 PWR Power LED
CN1 2-pole PCB terminal block 5.08mm For output device connection (heater/fan…)

 

 
- description_tag: The Thermostat Click Board™ is based on the Maxim MAX7502 IC digital temperature sensor. It also provides an over-temperature alarm/interrupt/shutdown output and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25. Available from Debug Store UK. - title_tag: MikroE Thermostat Click Board™ (MIKROE-2273) - manufacturer: Mikroelektronika d.o.o. - warranty: 12 months - amazon_enable: TRUE - amazon_title: Thermostat Click Board - amazon_product_type: computercomponent - amazon_block: FALSE - amazon_prime_enable: FALSE - amazon_search: MikroElektronika Microelectronica MIKROE-1100 - amazon_uk_price: 16.72 - amazon_uk_currency: GBP - amazon_de_currency: EUR - amazon_de_price: 18.8936 - amazon_fr_currency: EUR - amazon_fr_price: 18.8936 - amazon_es_currency: EUR - amazon_es_price: 18.8936 - amazon_nl_currency: EUR - amazon_nl_price: 18.8936 - amazon_it_currency: EUR - amazon_it_price: 18.8936 - amazon_se_curency: SEK - amazon_se_price: 190.608 - amazon_product_id: 8606015079677 - amazon_product_id_type: EAN - amazon_update: Update - amazon_short_description: The Thermostat Click Board™ is based on the Maxim MAX7502 IC digital temperature sensor. It also provides an over-temperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25. - amazon_long_description:

If you need a temperature sensor and relay in one device, you should look no further than Thermostat Click. It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat.

Thermostat Click carries the MAX7502 IC digital temperature sensor, that also provides an over-temperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. MAX7502 IC can measure temperatures from -25.

- amazon_main_image: https://www.thedebugstore.com/images/product/lg-thermostat-click-board-angle.jpg - amazon_browse_node: 428655031 - related_products: MIKROE-3724 - mpn: MIKROE-2273 - backorder_label: If no stock shown above, check availability - badge: - widget:

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- google_product_category: 8156 - condition: new - custom_product: false - mpn: MIKROE-2273 - google_product_category: Electronics - custom_label_0: Click Board - examples:

Code examples for the Thermostat Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.

CODE SNIPPET

This code snipped for EasyMx PRO v7 for STM32F107VC MCU initializes the temperature sensor by writing into its registers and, then it reads the temperature in an endless loop. If the measured temperature gets below the hysteresis temperature, the output relay is ON.

The sensor is configured for heating, without fault queue bits, when OS output is active low, with comparator logic and in normal operation.

 1    // Main program
 2   void main() 
 3   {
 4    
 5    // MAX7502 temperature controller IC
 6 
 7    // MAX7502 Initialization
 8    TEMP = 0;                  // Thermostat function disabled - Output Relay disconnected
 9    TRES = 0;                  // Apply Reset procedure
10    delay_ms(150);
11    TRES = 1;                  // Temperature controller is in default state and ready for work
12 
13    // MAX7502 Configuration
14    Set_CONFIG(0);             // Set parameters in configuration register
15                               // refer to MAX7502 datasheet and click board schematic in order to
16                               // set right parameters for intended application:
17                               // e.g. set OS output pin polarity for using the chip sensor in
18                               // processes of Heating (bit1=0) or Cooling (bit1=1)
19                               // or set the output function of the same pin to be Comparator (bit2=0)
20                               // or Interrupt logic (bit2=1) in order to use the sensor for hysterezis
21                               // temp ON/OFF control (real process) or trivial ON/OFF control
22                               // In this example the chip is configured for heating
23    Set_TEMP_REF(REF_TEMP);    // Set referent temperature T = 22 C (Output relay is ON until the environment
24                               // temperature has reach that value)
25    Set_TEMP_HYST(HYST_TEMP);  // Output Relay is OFF until the temperature falls below HYST value
26 
27    TEMP = 1;                  // Thermostat enabled - Output Relay connected to OS output pin of MAX7502
28    
29    
30 
31    current_temp = REF_TEMP;
32    old_MSB = 0;
33    temp_MSB = 0;
34    temp_changed = false;
35 
36    
37    // Temperature read loop  -  temperature controlling process
38    while (1) 
39    {
40          Temp_read();         // Read 9-bit temperature value from MAX7502's register space
41          delay_ms(200);       // +-0.5 C fraction neglected in this example
42    }
43    
44 }
- attachments: [{"download_file":[{"download_file":"Thermostat Click Board™ Schematic"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Maxim MAX7502 Temperature Sensor Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]},{"download_file":[{"download_file":"Omron G6D Datasheet"}],"download_filetype":[{"download_filetype":"pdf"}]}] - device_vendor: Maxim Integrated - device_type: MAX7502MSA+ - warranty: 12 months - brand: MikroE - manufacturer: Mikroelektronika d.o.o. - brands: gid://shopify/Metaobject/56256004319 - breadcrumbs: ["gid://shopify/Collection/447955239135","gid://shopify/Collection/241680580797","gid://shopify/Collection/241545969853"] - customhs_code: 847330 - detailed_description: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"If you need a temperature sensor and relay in one device, you should look no further than the "},{"type":"text","value":" Thermostat Click Board™","bold":true,"italic":true},{"type":"text","value":". It can be used to measure environmental temperature and to directly switch ON/OFF cooling and heating devices, performing all the functions of a thermostat."}]},{"type":"paragraph","children":[{"type":"text","value":"The"},{"type":"text","value":" Thermostat Click Board™","bold":true},{"type":"text","value":" carries the MAX7502 IC digital temperature sensor, that also provides an overtemperature alarm/interrupt/shutdown output, and an SN74LVC1G126 single bus buffer from Texas Instruments. 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With such low power consumption, it is very suitable for home automation devices."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"ENABLE/DISABLE THERMOSTAT FUNCTIONALITY"}]},{"type":"paragraph","children":[{"type":"text","value":"There is also the TE (thermostat enable) pin on the mikroBUS™ pin socket for enabling (high level) or disabling (low) of the thermostat functionality. This is accomplished via the SN74LVC1G126 single bus buffer with 3-state output IC, which serves as an electronic switch between temperature sensor IC output pin and the relay driver circuit."}]},{"type":"paragraph","children":[{"type":"text","value":"This way the relay can be permanently disconnected from the sensor IC output. A feature like this can be useful when the sensor IC is only used as an measuring device, or if the thermostat needs to be temporarily disabled."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"APPLICATION"}]},{"type":"paragraph","children":[{"type":"text","value":"HVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"SPECIFICATIONS"}]},{"type":"paragraph","children":[{"type":"text","value":"Type\nTemperature & humidity\nApplications\nHVAC systems, heating systems, cooling systems, simple interrupt ON/OFF temp control, hysteresis controller, etc.\nOn-board modules\nMAX7502 IC digital temperature sensor\nKey Features\nMAX7502 temperature sensor, SN74LVC1G126 single bus buffer, G6D PCB power relay, I2C interface, either 3.3V or 5V power supply,\nInterface\nGPIO,I2C\nCompatibility\nmikroBUS\nClick board size\nL (57.15 x 25.4 mm)\nInput Voltage\n3.3V or 5V"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"PINOUT DIAGRAM"}]},{"type":"paragraph","children":[{"type":"text","value":"This table shows how the pinout on the "},{"type":"text","value":"Thermostat Click Board™ ","bold":true},{"type":"text","value":"corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns)."}]},{"type":"paragraph","children":[{"type":"text","value":"Notes\nPin\nPin\nNotes\nHardware Reset for MAX7502\nRST#\n2\nRST\nINT\n15\nNC\nThermostat enable\nTE\n3\nCS\nTX\n14\nNC\nNC\n4\nSCK\nRX\n13\nNC\nNC\n5\nMISO\nSCL\n12\nSCL\nSerial Data Input/Output Line\nNC\n6\nMOSI\nSDA\n11\nSDA\nSerial Data Clock Input\nPower supply\n+3.3V\n7\n+3.3V\n+5V\n10\n+5V\nPower supply\nGround\nGND\n8\nGND\nGND\n9\nGND\nGround"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"JUMPERS AND SETTINGS"}]},{"type":"paragraph","children":[{"type":"text","value":"The table below gives information about the onboard jumpers."}]},{"type":"paragraph","children":[{"type":"text","value":"Designator\nName\nDefault Position\nDefault Option\nDescription\nJP1\nPWR.SEL.\nLeft\n3.3V\nPower Supply Voltage Selection 3.3V/5V, left position 3.3V, right position 5V"}]},{"type":"heading","level":3,"children":[{"type":"text","value":"LEDS, BUTTONS AND SWITCHES"}]},{"type":"paragraph","children":[{"type":"text","value":"The following table gives information about onboard LEDs, buttons and switches."}]},{"type":"paragraph","children":[{"type":"text","value":"Designator\nName\nType (LED, BUTTON…)\nDescription\nLD1\nPWR\nPower LED\nCN1\n2-pole PCB terminal block 5.08mm\nFor output device connection (heater/fan…)"}]},{"type":"heading","level":3,"children":[{"type":"text","value":" "}]},{"type":"paragraph","children":[{"type":"text","value":" "}]}]} - summary:

The Thermostat Click Board™ is based on the Maxim MAX7502 IC digital temperature sensor. It also provides an over-temperature alarm/interrupt/shutdown output and an SN74LVC1G126 single bus buffer from Texas Instruments.

MAX7502 IC can measure temperatures from -25°C to +100°C, within the accuracy of ±1.5°C.

The G6D PCB power relay can control up to 5A, 250V AC/30V DC loads.