XK03 - STEM Raspberry Pi Kit
The STEM Raspberry Pi Kit consist of the following:
- 1 x BR01 - Raspberry Pi Bridge
- 1 x OD01 - OLED Display 128x64 (SSD1306)
- 1 x SG33 - VOC and eCO2 Sensor (CCS811)
- 1 x SH01 - Capacitive Touch (CAP1296)
- 1 x SI02 IMU 6DoF (MAG3110 & MMA8653fc)
- 1 x SL06 - Gesture Sensor(APDS-9960)
- 1 x SW01 - Advanced Weather Sensor (BME280)
- 1 x XC10 - 10-Pack xBUS Connectors
BR01 - Raspberry Pi Bridge
This xCHIP is designed to interface with all Raspberry Pi modules. This provides an interface to support the xCHIP ecosystem, adding support for many additional sensors etc.
OD01 - OLED Display 128x64 (SSD1306)
This xChip is an output display module and is equipped with an OLED display unit that is capable of displaying any text or graphics. This display can be very useful as a sensor data display.
These miniature display are about 0.96” diagonal, but very readable due to the high contrast of OLED technology. This display is made of 128x64 individual monochrome OLED pixels, each one is turned on or off by the controller chip. Because the display makes its own light, no backlight is required. This reduced the power required to run the OLED and is why the display has such high contrast; we really like this miniature display for its crispness!
SG33 - VOC and eCO2 Sensor (CCS811)
This xCHIP is equipped to sense a variety of Volatile Organic Compounds (VOCs). This xCHIP is based on the CCS811 which is an ultra-low power digital gas sensor which integrates a metal oxide (MOX) gas sensor to detect a wide range of Volatile Organic Compounds (VOCs), for indoor air quality monitoring, a micro-controller unit (MCU), and an I2C interface.
CCS811 is based on ams unique micro-hotplate technology which enables a highly reliable solution for gas sensors, very fast cycle times and a significant reduction in average power consumption. The integrated MCU manages the sensor drive modes and raw sensor data measured while detecting VOCs. The I2C digital interface significantly simplifies the hardware and software design, enabling a faster time to market. CCS811 supports intelligent algorithms to process raw sensor measurements to output a TVOC value or equivalent CO2 (eCO2) levels, where the main cause of VOCs is from humans. CCS811 supports multiple measurement modes that have been optimized for low-power consumption during an active sensor measurement and idle mode extending battery life in portable applications.
SH01 - Capacitive Touch (CAP1296)
This xCHIP is based on the CAP1296 which is a multiple channel capacitive touch sensor controller. Each sensor input is calibrated to compensate for system parasitic capacitance and automatically recalibrated to compensate for gradual environmental changes. In addition, the CAP1296 can be configured to detect proximity on one or more channels with an optional signal guard to reduce noise sensitivity. The CAP1296 includes Multiple Pattern Touch recognition that allows the user to select a specific set of buttons to be touched simultaneously. If this pattern is detected, a status bit is set and an interrupt is generated.
SI02 - IMU 6DoF (MAG3110 & MMA8653fc)
Freescale’s MAG3110 is a small, low-power, digital 3-axis magnetometer. The device can be used in conjunction with a 3-axis accelerometer to realize an orientation independent electronic compass that can provide accurate heading information. It features a standard I2C serial interface output and smart embedded functions. The MAG3110 is capable of measuring magnetic fields with an output data rate (ODR) up to 80 Hz; these output data rates correspond to sample intervals from 12.5 ms to several seconds. The MAG3110 is available in a plastic DFN package and it is guaranteed to operate over the extended temperature range of -40°C to +85°C.
The MMA8653FC is an intelligent, low-power, three-axis, capacitive micromachined accelerometer with 10 bits of resolution. This accelerometer is packed with embedded functions with flexible user-programmable options, configurable to two interrupt pins. Embedded interrupt functions enable overall power savings, by relieving the host processor from continuously polling data. There is access to either low-pass or high-pass filtered data, which minimizes the data analysis required for jolt detection and faster transitions. The device can be configured to generate inertial wake-up interrupt signals from any combination of the configurable embedded functions, enabling the MMA8653FC to monitor inertial events while remaining in a low-power mode during periods of inactivity.
SL06 - Gesture Sensor (APDS-9960)
This xCHIP features advanced Gesture detection, Proximity detection, Digital Ambient Light Sense (ALS) and Color Sense (RGBC).
SW01 - Advanced Weather Sensor (BME280)
The humidity sensor provides an extremely fast responce time for fast context awareness application and high overall accuracy over a wide temperature range.
The pressure sensor is an absolute barometric pressure sensor with extremely high accuracy and resolution.
The integrated temperature sensor has been optimized for lowest noise and highest resolution. Its output is used for temperature compensation of the pressure and humidity sensors and can also be used for estimation of the ambient temperature.
XC10 - 10-Pack xBUS Connectors
The xBUS is the main connection between the xCHIPs. Most xCHIPs will have a connection on all 4 sides, but some will have a connection sacrifices either for space or for other connectors, such as USB or antenna connectors.
The Raspberry Pi is not included