Author: user

Simple RF Switch

Posted on by user

Very simplistic RF enabled (subGHz range) switch with two control points which are opto-isolated.

Requirements:

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

Major components:

  • MSP430F2272
  • TL1963
  • CC1101
  • 4N25

Number of PCB layers: 4

BOM price: 28 USD

Realization time: 2 weeks

Grill Watching Device

Posted on by user

If you are tired to watch over your grill then this is your device. Capable of snapping pictures up to 5 Mpix and sending them to cloud via WiFi interface. The camera exposure to grill goodies is achieve through the servo motor.

Requirements:

  • WiFi/BLE network controller,
  • Image capture up to 5 Mpix,
  • JPEG image compression,
  • Image storage into non-volatile serial flash,
  • Camera exposure via servo motor.

Major components:

  • STM32F767
  • OV5640
  • ATWINC3400
  • DRV8831
  • IS42S16400 & W25N01
  • TPS7A9201 & TPS79501

Number of PCB layers: 4

BOM price: 80 USD

Realization time: 10 weeks

eInk Tag

Posted on by user

BLE enabled device to serve as price tag in market place. The benefit of the device is ability to update prices remotely and via automated scripts through the BLE interface. For long power supply option a motion activation mechanism can be enabled.

Requirements:

  • BLE interface for device configuration,
  • E-Ink display for data presentation,
  • Motion detection,
  • Power supply via CR2470

Major components:

  • nRF52832
  • ADXL362
  • GDEW0154Z04
  • TPS61220

Number of PCB layers: 4

BOM price:  25 USD

Realization time: 6 weeks

Fitness tracker

Posted on by user

Tracking your step count is main function of this device by utilizing a custom algorithm enhanced with DSP.

Requirements:

  • BLE interface for device configuration,
  • Motion detection,
  • Step tracking,
  • Low power profile.

Major components:

  • nRF52832
  • ADXL362
  • GDEW0154Z04
  • TPS61220

Number of PCB layers: 4

BOM price:  25 USD

Realization time: 6 weeks

Payment Authorization Tool

Posted on by user

Secure transfer of information is a key feature of this device by utilizing AES encryption mechanism. Device keyboard allows entering predefined sum of money and transferring via secure BLE link.

Requirements:

  • BLE interface for device configuration,
  • OLED display for data presentation,
  • Keyboard for device interaction,
  • AES encryption.

Major components:

  • nRF52832
  • ER-OLED0.91-3B
  • MCP73831
  • TPS78230

Number of PCB layers: 4

BOM price:  25 USD

Realization time: 7 weeks