Mikroelektronika d.o.o.
Lastzelle 2 Click-Platine
Lastzelle 2 Click-Platine
Verfügbarkeit für Abholungen konnte nicht geladen werden
Overview
Das Load Cell 2 Click Board™ ist ein Gewichtsmess-Click, der ein Wägezellenelement verwendet, um das Gewicht eines Objekts präzise zu messen. Das Load Cell 2 Click kann mit Wägezellen vom Typ Dehnungsmessstreifen mit einem externen Differenzial-Referenzspannungsbereich von 0,1 V bis 5 V verwendet werden. Die Wägezelle mit Dehnungsmessstreifen ist typischerweise ein Schaltkreis aus vier Dehnungsmessstreifen, die in der Wheatstone-Brückenkonfiguration verbunden sind. Sehr kleine Spannungsänderungen müssen präzise erkannt und in eine digitale Form umgewandelt werden. Das Load Cell 2 Click basiert auf dem NAU7802, einem 24-Bit-Analog-Digital-Wandler von Nuvoton, der über einen einfachen I2C-Befehl gesteuert wird. Dieser Sensor hat viele Funktionen, die ihn zu einer perfekten Lösung für kleine Designs machen. Eine dieser Funktionen ist sicherlich sein hoher Integrationsgrad, der eine minimale Anzahl externer Komponenten ermöglicht.
Das Load Cell 2 Click Board™ wird von einer mikroSDK-kompatiblen Bibliothek unterstützt, die Funktionen enthält, die die Softwareentwicklung vereinfachen. Dieses Click Board™ wird als vollständig getestetes Produkt geliefert und ist bereit für den Einsatz auf einem System, das mit der mikroBUS™-Buchse ausgestattet ist.
| General Information | |
|---|---|
Part Number (SKU) |
MIKROE-4047
|
Manufacturer |
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| Physical and Mechanical | |
Weight |
0.018 kg
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| Other | |
Country of Origin |
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HS Code Customs Tariff code
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EAN |
8606018717118
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Warranty |
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How Does The Load Cell 2 Click Board™ Work?
The Load Cell 2 Click Board™ is based on the NAU7802 is a precision low-power 24-bit analog-to-digital converter (ADC), with an onboard low-noise programmable gain amplifier (PGA), onboard RC or Crystal oscillator, and a precision 24-bit sigma-delta (Σ-Δ) analog to digital converter (ADC). The NAU7802 device is capable of up to 23-bit ENOB (Effective Number Of Bits) performance. This device provides a complete front-end solution for bridge/sensor measurement such as in weigh scales, strain gauges, and many other high resolution, low sample rate applications.
The NAU7802 have many built-in features, which enable high performance applications with very low external parts count. Additionally, both operating current and standby current are very low, and many power management features are included. These enable powering only those elements of the chip that are needed, and also, to operate at greatly reduced power if the full 23-bit ENOB performance is not required.
The Programmable Gain Amplifier (PGA) provides selectable gains from 1 to 128. The A/D conversion is performed with a Sigma-Delta modulator and programmable FIR filter that provides a simultaneous 50Hz and 60Hz notch filter to effectively improve interference immunity. Also, this device provides a standard 2-wire interface compatible with I2C protocol for simple and straightforward connection to and interoperation with a wide range of possible host processors.
Calibration is not required for low accuracy applications, but may be needed in sensitive applications. When calibration is used the system designer has three options (details in NAU7802 datasheet).
The power supply is 3.3V and this allows only 3.3V MCUs to be interfaced with the Click boards™ directly.
SPECIFICATIONS
| Type | Force |
| Applications | NAU7802 provides a complete front-end solution for bridge/sensor measurement such as in weigh scales, strain gauges, and many other high resolution, low sample rate applications. |
| On-board modules | NAU7802 24-Bit Dual-Channel ADC For Bridge Sensors |
| Key Features | NAU7802 is a precision low-power 24-bit analog-to-digital converter (ADC), with an onboard low-noise programmable gain amplifier (PGA), onboard RC or Crystal oscillator, and a precision 24-bit sigma-delta (Σ-Δ) analog to digital converter (ADC) |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V |
PINOUT DIAGRAM
This table shows how the pinout of the Load Cell 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | RDY | Data Ready | |
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | NC | |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
Frequently Asked Questions
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