3-Axis Gyro Carrier with Voltage Regulator

This sensor isST L3GD20Hrulo (X), pitch (Y) ve yaw (Z) eksenleri arasındaki açısal dönüş oranlarını ölçen üç eksenli jiroskop için bir taşıyıcı / tümleşik kartıdır. Konfigüre edilebilir ± 245 ° / s, ± 500 ° / s veya ± 2000 ° / s aralığındaki açısal hız ölçümleri dijital I²C veya SPI arayüzü ile okunabilir. Kartın 3.3 V'luk bir doğrusal regülatörü ve 2.5 ila 5.5 V'luk bir giriş voltaj aralığı üzerinde çalışmasına izin veren entegre seviye kaydırıcıları var ve 0.1 "pin aralığı, standart lehimsiz breadboard ve 0.1" perfboardlar ile kullanımı kolaylaştırıyor.

Bu kart ST'nin L3GD20H üç eksenli dijital çıkış jiroskopu için kompakt (0.4 "x 0.9") tümleşik kartıdır; Bu nedenle bu ürünü kullanmadan önce L3GD20H veri sayfasını (3MB pdf) dikkatlice okumanızı öneririz. L3GD20H mükemmel bir IC, ancak küçük, kurşunsuz LGA paketi, tipik bir öğrencinin veya hobi kullanıcısının kullanımını zorlaştırmaktadır.

It also operates at voltages less than 3.6 V; this can make the interface difficult for microcontrollers operating at 5V. This carrier board combines additional electronics, including a 3.3 V voltage regulator and level-shifting circuits to address these issues while the overall size is as compact as possible. The board is packed with SMD components including L3GD20H as shown in the product picture.

The L3GD20H has many configurable options, including three selectable angular velocity sensitivities, seven selectable output data rates, seven different embedded FIFO modes to buffer the output data, and a programmable external interrupt signal. Three angular velocity readings are available via a digital interface that can be configured to operate in I²C or SPI mode.

The carrier board includes the 3.3 V low-voltage step-down linear voltage regulator required by the L3GD20H, and it is possible for the sensor to supply power from 2.5 V to 5.5 V. The regulator output is available on the VDD pin and is about 150 mA to external devices.

Arabirim kartı ayrıca, iki I²C hattını (veya SPI saatini ve veri girişi hatlarını) verilen VIN ile aynı mantık voltaj seviyesine kaydırarak, kartın 5 V sistemlerle arayüzlenmesini basitleştiren bir devre içerir ve kartın 0,1 "Pn aralığı standart lehimsiz breadboard ve 0.1" perfboard ile kullanımı kolaylaştırır.

For sensor fusion applications, the MinIMU-9 v3 and AltIMU-10 v4 inertial measurement units combine this L3GD20H with the LSM303D3-axis accelerometer and 3-axis magnetometer in a single board, providing nine independent readings that can be used to calculate absolute orientation. The AltIMU-10 v4 also includes an LPS25H pressure sensor that can be used to calculate altitude.

3-Axis Gyro Carrier with Voltage Regulator Features

• Boyutlar: 0.4 "× 0.9" × 0.1 "(13 × 23 × 3 mm)
• Weight without head pins: 0.7 g (0.03 oz)
• Operating voltage: 2.5 V to 5.5 V
• Supply current: ~ 6 mA
• Output format (I²C / SPI): one 16-bit reading per axis
• Sensitivity range (configurable): ± 245 ° / s, ± 500 ° / s or ± 2000 ° / s

Included Components

Aşağıdaki resimde gösterildiği gibi 0.1 "düz üstbilgi pimlerinin 10 × 1 şeridi ve 0.1" dik açı başlığı pimlerinin 9 × 1 şeridi dahil edilmiştir. Seçtiğiniz başlık şeridini, özel kablolar veya lehimsiz tahta ile kullanmak için tahtaya lehimleyebilir veya daha küçük tesisler için doğrudan telin kendisine lehimlenmesini sağlayabilirsiniz.

The board has a mounting hole that works with # 2 and M2 screws (not included).

Regardless of the interface used to communicate with the L3GD20H, the VIN pin must be connected to a 2.5 V to 5.5 V source and GND must be connected to 0 volts. (Alternatively, if you are using gyro with a 3.3v system, you can keep the VIN separate and bypass the internal regulator by connecting the 3.3V directly to the VDD.

To use the L3GD20H in I²C mode, a minimum of two logic connections are required (default mode): SCL and SDA. These pins are connected to internal level changers that enable them to use them safely at voltages above 3.3 V; It must be connected to an I²C bus operating at the same logic level as the VIN. The remaining pins are not connected to the level shifts on the board and are not 5V tolerant, but the 4-channel bidirectional logic level shifter can be used externally with these pins to achieve the same effect.

To use the L3GD20H in SPI mode, four logic connections are generally used: SPC, SDI, SDO, and CS. These must be connected to an SPI bus operating at the same logic level as the VIN. The SPI interface operates in 4-spindle mode by default, SDI and SDO are on separate pins, but can be configured to use 3-wire mode for SDO to share with SDI.

Pin Descriptions

VIN:This is the main power supply connection and must be supplied with power from 2.5 V to 5.5 V. SCL / SPC and SDA / SDI level sliders pull the I²C and SPI bus high bits to this level.

GND:The ground (0 V) connection of your power supply. Your I²C or SPI control source must also share a common ground with this board.

VDD:Regulated 3.3 V output. Approximately 150 mA is available to power external components. (If you want to bypass the internal regulator, you can use this pin as a 3.3 V input with VIN disconnected.)

SCL / SPC:I²C / SPI clock line with level shift: HIGH VIN, LOW 0 V

SDA / SDI:I²C data line with level shifting and SPI data line (also doubles SDO in 3-wire mode): HIGH VIN, LOW 0 V

SDO SPI:Data line in 4-wire mode: HIGH VDD, LOW 0 V. I²C is also used as a 3.3V logic level input to set the slave address (see below). This pin level is unchanged and is not 5V tolerant.

CS SPI:enables (chip selection). Defau

DRDY / INT2:Data ready indicator, 3.3V logic level output. HIGH (3.3 V) indicates that it can read angular velocity data. It can also be configured as a FIFO interrupt. This output is not level shifted.

INT1:Programmable cutoff, 3.3V logic level output. This output is not level shifted.

DEN:Data-activated trigger, 3.3V-logic level input. This input level is not shifted and is not 5V tolerant.

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