Shared Projects by PeskyProducts

Small breakout board for ST Microelectronics' high-G H3LIS331D accelerometer.

Bosch’s new BNO-055 9-axis motion sensor plus BMP280 pressure sensor. The BNO-055 has an embedded Cortex M0 ARM processor as well as accel/gyro and mag for a purely hardware absolute orientation solution. This is either a mini Teensy 3.1 shield or a conventional breakout board, choice is made via solder pads on back which bring 3V3 and GND out to edge pins. Sensor can be accessed either via I2C, UART, or HID-I2C on Windows 8 by changing solder pads PS0 and PS1 on back. Lastly, BNO-055 I2C address LSB can be changed via solder pad ADO so two can be on the same circuit, if desired.

Nordic Semiconductor’s low-power 2.4 GHz RF radio with pcb antenna and matching circuit per Nordic’s spec. Using much smaller XRCHA16MHz Murata crystal to reduce cost and board size. Adjusted antenna dimensions for better matching.

Appallingly small Teensy 3.x add-on board with 128 Mbytes of fast serial flash memory using an SPI communications interface. BGA-24 package Micron N25Q00AA flash chip with single chip select and all functional pins broken out. Board mounts onto the non-USB end of Teensy 3.x or Teensy-LC. Designed so it does not interfere with the I2C port on pins 16/17 of the Teensy 3.1.

Redesign of the breakout board for ST Microelectronics' VL6180X proximity sensor for breadboarding with Teensy and Arduino. VIN is between 3 and 5.5 V. Sensor uses time of flight to detect absolute distances independent of surface reflectance up to 25 cm away. Can be used to recognize hand gestures for sophisticated touchless micro-controlling. Small package, low cost, and low power usage makes integrating into existing projects, or use as a Teensy 3.1 or Arduino Pro Mini add-on board very attractive. In fact, VIN and GND can be supplied via Teensy GPIO pins by digitalWrite(HIGH) and digitalWrite(LOW) since total current draw is always less than 25 mA for this sensor. Replaced voltage regulator with TI TLV70728, reduced size of passives to 0402, and significantly improved layout. Shortened traces to bypass capacitors and added thermal path for voltage regulator.