EasyLoader (beta)

Current Product Don't Have Test Firmware

Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.

1. Click connect button

2. After connected successfully, pick a firmware

3. Click the burn button

4. After burning successfully, Unplug the device and restart.

0%

UNIT Kmeter

SKU:U133

Description

UNIT Kmeter is a K-type thermocouple sensor with I2C communication interface. The hardware adopts ESP32-C3 main control + MAX31855KASA+T 14bit thermocouple digital conversion chip. The internal ESP32-C3 integrated firmware communicates with the thermocouple digital IC to process the raw data and expose the I2C interface. The user can easily obtain the processed temperature data. This product is specially designed for K-type thermocouples. The conversion chip supports thermocouple probes with a measuring range of -200°C to 1350°C, and adopts a general standard flat interface, which is convenient for subsequent replacement of different measurement probes with different ranges to match different needs. It is suitable for industrial temperature collection, monitoring and other scenes that have high requirements for temperature measurement range.

Product Features

  • ESP32-C3 (support I2C firmware update)
  • MAX31855KASA+T:
    • 14Bit ADC
    • 0.25°C resolution, accuracy ±2%
    • Support probe type: K type
    • Support the measurement range of the connected probe -200°C to 1350°C
  • I2C communication interface addr: 0x66

Include

  • 1x Kmeter Unit
  • 1x K-type thermocouple probe (measuring range -50°C to 250°C, wire length 1m)
  • 1x HY2.0-4P cable (20cm)

Applications

  • Industrial temperature collection
  • Constant temperature control/monitoring scene

Specification

Specifications Parameters
Thermocouple digital conversion IC MAX31855KASA+T: 14Bit ADC, 0.25°C resolution, accuracy ±2%, support probe type: K type, support measurement range -200°C to 1350°C
Standard probe specifications K-type thermocouple, measuring range -50°C to 250°C, line length 1m, thermal response time <1s, interface: standard flat copper plug
Communication protocol I2C, device address: 0x66
Power consumption 5V@24mA
Net weight 9.3g
Gross weight 21g
Product size 56 * 24 * 9.6 mm
Packing size 93 * 138mm

Protocol

  • Protocol type I2C
  • I2C Address: 0x66
addr data length desc return values
0x66 4Byte thermocouple and internal temperature data Byte[0] thermocouple_H
Byte[1] thermocouple_L
Byte[2] internal_H
Byte[3] internal_L
  • calculate

thermocouple = (thermocouple_H << 8) + thermocouple_L;
internal = (internal_H << 8) + internal_L;

thermocouple_temp = 0.25f * (thermocouple >> 2);
internal_temp = 0.0625f * (internal >> 4);

PinMap

  • UNIT Kmeter
M5CORE - PORT A G21 G22 5V GND
Kmeter SDA SCL VCC GND

Schematic

Example

Arduino

Video