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Up to 12 of this devices can be used to form a sub GHz mesh network based on the custom protocol. In this network, device can be master or a slave. Difference is, that the master has the access to the WiFi network and slave doesn’t. Data from slave is sent to the master through mesh network. Master will received all data from slave devices and it will send it to the cloud.

Requirements:

• Logging the data to the cloud over WiFI network
• Firmware upgrade via BLE interface
• Sub GHz mesh network

Major components:

• STM32L552
• ATWINC3400
• SPSGRF-915
• SST26VF032

Number of PCB layers: 4

BOM price: 58 USD

Realization time: 8 weeks

Live image streaming via wireless link at rates up to 35 FPS is main feature of the dental device. Two variants of the board where built in order to explore the image size vs required throughput performance on the FPS rate.

Requirements:

• Steel image capture up to resolution of 640×480
• JPEG image streaming up to 35FPS@320×240 via WIFI network
• device network configuration via BLE interface
• device configuration storage in non-volatile memory
• battery charging and monitoring capabilities

Major components:

• STM32H750
• ATWINC3400
• OV7690
• 24CW1280
• BQ24074

Number of PCB layers : 4

Realization time: 10 weeks

BOM price: 63 USD

Second device utilized the BGA camera cube and 0201 components.

CAN controlled and configurable milking controller for cattle milk dispensing. By employing complex actuator sequence realized through the two PWM channels and three ADC channels on pressure sensors, a smart milking system is realized. Status messages are shown on a small 320×240 TFT display.

Requirements:

• CAN network over opto-islated controller
• TFT LCD display for system status
• Firmware upgrade via CAN interface
• Differential pressure monitoring
• System parameter storage on non-volatile memory

Major components:

• STM32F103
• ADM3053
• ZXMS6005DG
• W25Q32
• MPX5500 & MPXV5100

Number of PCB layers: 2

BOM price: 99 USD

Realization time: 8 weeks

A multi-board system designed for purpose of improving fishing experience. System includes remote controller with BLE and sub-GHz communication interface, keypad and OLED display. On the remote side a board that allows RGB light control for purpose of bait simulation, sonar, motor controller and IMU. System allows up to 4 fishing bobbers to be added into subGHz start network.

Requirements:

• BLE and subGHz communication interface for device control,
• OLED display and keyboard for device configuration and control,
• RGB LED lights for fish attraction,
• Sonar and motor control for bait simulation and detection,
• Low power profile,

Major components:

• STM32L476 & nRF52832
• SPSGFR-915
• LIS2DE12, PGA460
• BQ24074, DRV8837
• LMR62421, TPS62740
• OLED 96×96

Number of PCB layers: 4

BOM price: 117 USD

Realization time: 12 weeks

NFC reader and two stepper motor drivers are integrated into this small board. The board allows identification of the spray head through small 25 mm NFC Type 2 tag and serves as mechanism for master device to distribute spray content per predefined algorithm.

Requirements:

• NFC Type 2 Tag reader
• Stepper motor controller
• UART communication,

Major components:

• STM32F401
• DRV8821
• CR95HF
• AZ1117

Number of PCB layers: 4

BOM price: 32 USD

Realization time: 6 weeks