Shared projects

SI4703_AddOn.v01

by PeskyProducts.

4 layer board of 0.71x0.61 inches (17.91x15.39 mm).
Shared on May 31st, 2016 02:04.

Straightforward copy of Sparkfun’s SI4703 FM Tuner Evaluation Board (https://www.sparkfun.com/products/12938) with SI4703 radio and TPA6111A2 amplifier here as a much smaller add-on for Teensy or Dragonfly. The add-on is intended to be mounted onto pins 8/9/10 and 15/16/17 of the Teensy (or 8/9/10 and 30/21/20 of Dragonfly) and take power and GND from the power port at the end of the MCU. Standard 3.5 mm phone jack for headphones should allow good FM reception in a portable, battery-powered package.

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PlugAdapter.v02

by PeskyProducts.

2 layer board of 0.45x0.31 inches (11.33x7.75 mm).
Shared on May 29th, 2016 22:48.

Male MicroB USB connector adapter board.

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USFSNano.v01

by PeskyProducts.

4 layer board of 0.43x0.39 inches (11.00x10.01 mm).
Shared on May 27th, 2016 04:42.

EM7180 sensor hub, MPU9250 9 DoF motion sensor, and M24512 64 kB EEPROM on a super small board for wearable applications.

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nRF52832_QFN48.v02b

by PeskyProducts.

4 layer board of 0.71x1.41 inches (17.96x35.71 mm).
Shared on May 21st, 2016 07:23.

Reversed DIO and CLK silkscreen.

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ESP8285DevBoard.v01

by PeskyProducts.

4 layer board of 0.71x1.01 inches (17.96x25.55 mm).
Shared on May 1st, 2016 00:08.

Development breakout for the ESP8285 (ESP8266 with embedded 1 Mbyte flash). All GPIOs broken out to 0.1 inch edge pins, FTDI230XQ so ESP8255 can be programmed and send serial out through Micro-B USB connector. MIC5528 3V3, 500 mA LDO regulator for plenty of power through LiPo battery or VUSB. MAX1555 LiPo battery charger for battery powered applications. Voltage divider for battery voltage monitoring using ADC. BME280 pressure/temperature/humidity sensor and VEML6075 UVA/B sensor on board for basic environmental sensing and to demonstrate I2C sensor management and wifi webcasting of the data. Boot and reset buttons for easier programming.

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