OSH Park
Profile for dewhisna
Shared projects
Single-to-Dual Voltage Converter
by
dewhisna.
2
layer board of
0.96x1.21
inches
(24.28x30.63
mm).
Shared on
May 27th, 2017 18:04.
Simple 555 charge-pump circuit to create a negative tracking split supply voltage that mirrors the single supply input voltage.
AN3813K BLDC VCR Cylinder Motor Driver Arduino Shield
by
dewhisna.
2
layer board of
2.11x2.73
inches
(53.49x69.37
mm).
Shared on
May 26th, 2017 22:52.
AN3813K Brushless DC Motor Driver Arduino Shield for use with VCR Cylinder Motors with precision speed control with feedback.
Specifically designed to be used with the Arduino ProMini PiDuino HAT and the STM32F746G Discovery Board, but can also be used on any Arduino Uno R3 compatible target. Supports both 5V and 3.3V logic with on-board level-shifters.
DRV10975 Brushless DC (BLDC) Driver Interface Board
by
dewhisna.
2
layer board of
2.01x2.01
inches
(50.95x50.95
mm).
Shared on
April 19th, 2017 05:01.
DRV10975 Brushless DC (BLDC) Driver Interface Board
Modulated Reflectivity Sensor Driver
by
dewhisna.
2
layer board of
2.11x2.23
inches
(53.49x56.67
mm).
Shared on
April 7th, 2017 03:37.
The Modulated Reflectivity Sensor Driver Board, a.k.a. the Arduino OptoInterrupter PLL Shield for the ProMini PiDuino HAT, was designed to interface two off-the-shelf optical reflective sensors to the Raspberry Pi via an Arduino ProMini PiDuino HAT.
Unlike the OptoInterrupterShield for ProMini PiDuino HAT, this version uses a Phase Locked Loop (PLL) circuit to modulate the reflectivity sensor to prevent false triggering of the sensor from ambient light.
The optical reflective sensors are used to detect the presence of an object by reflecting an infrared LED back to a phototransistor. The Arduino ProMini on the PiDuino HAT will allow “real-time” sensor timing with an accuracy of +/- 4uSec, using a standard 16MHz ProMini board.
Since the ProMini PiDuino HAT, which this board was designed for, uses standard Arduino Uno footprints, this board can also be used on other Arduino compatible boards. It does, however, require an Arduino board that has 5V compatible I/O pins, as this board is designed to run at 5V.
OptoInterrupterShield for ProMini PiDuino HAT
by
dewhisna.
2
layer board of
2.11x2.23
inches
(53.49x56.67
mm).
Shared on
March 14th, 2017 04:15.
The Optical Interrupter Protoshield board the for ProMini PiDuino HAT was designed to interface two off-the-shelf optical reflective sensors to the RPi via an Arduino ProMini.
The optical reflective sensors are used to detect the presence of an object by reflecting an infrared LED back to a phototransistor. The Arduino ProMini on the PiDuino HAT will allow “real-time” sensor timing with an accuracy of +/- 4uSec, using a standard 16MHz ProMini board.
Since the interface circuit required for the Optic Interrupter is small relative to the board size needed to fit the standard Arduino Uno pinout, this board was designed as a complete prototyping shield. The two test switches for testing the interrupter inputs have been left floating with breakout pads so they can be tied to any circuit. A reset button and user defined LED have been added in addition to a power LED and D13 LED.
Since the ProMini PiDuino HAT uses standard Arduino Uno footprints, this board can also serve as a prototyping shield for other Arduino boards and/or is interchangeable with either platform.
The V+ bus is tied to the IOREF voltage, allowing operation at either 3.3v or 5v and there’s extra connection pads for all Arduino I/O pins.