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Eight channel resistance measurement from the FSR sensor is captured and transmitted via BLE interface on this device. Data is sampled at the real time pace 50 samples per second on each channel and stored into non-volatile serial flash.

Requirements:

• BLE interface for device configuration,
• Resistance measurement,
• Data logging.

Major components:

• nRF52832
• OPA333 & ADS1000
• TPS78233  & TPS78218
• MCP73831
• W25Q32

Number of PCB layers: 2

BOM price:  66 USD

Realization time: 6 weeks

This is a multi-board system comprised from two types of devices sensor/hub and inductive charging station. Multi-role multi-connection of BLE interface is key feature of the sensor/hub device. Up to 12 BLE slave sensor devices can connect to one central hub device aggregating traffic and forwarding to mobile phone. In addition to that device have inductive charging capabilities, motion detection, resistance measurement and data streaming and logging.

 

Requirements:

• BLE interface for device configuration,
• Data streaming and logging,
• Motion detection,
• Power supply via CR2470

Major components:

• nRF52832 & STM32L432
• BMI160
• W25N01
• OPA333, OPA172 & TPS782xx
• BQ24050, LM2587

Number of PCB layers: 4

BOM price:  56 USD

Realization time: 10 weeks

Capturing all raw traffic and pushing it through the WiFi interface is the main description of this device.

Requirements:

• BLE interface for device configuration,
• Raw BLE traffic capture,
• BLE traffic streaming via WiFi interface.

Major components:

• nRF52832
• CC3100
• LD39100

Number of PCB layers: 4

BOM price:  38 USD

Realization time: 7 weeks

If you are fan of RPi Zero then these hats might come handy to you. Designed to enable BLE/WiFi communication interface and to expose additional GPIO pins.

Requirements:

• BLE interface,
• WiFi interface,

Major components:

• nRF52840
• ESP32
• ES8266

Number of PCB layers: 4

BOM price:  22 USD

Realization time: 4 weeks

If you are fan of RPi boards these cellular hats might be handy.

Requirements:

• Cellular networking 2G, 3G & 4G
• WiFi interface,

Major components:

• ESP32
• SIM7100
• SIM868
• SIM5360

Number of PCB layers: 4

BOM price:  50 USD

Realization time: 4 weeks