Assistive Technology: Custom Devices

This post outlines the wiring for the offline Amazon Alexa device for control of the television in inpatient hospital rooms. To see how this device is connected in the hospital rooms, refer to this  post .  This outlines the wiring for the offline television device using Amazon Alexa. The following design uses the parts listed in a previous  post , along with a custom 3-D printed holder for inside of the project box enclosure. The 5V (Blue Wires) and GND (White Wires) pins on the Texas Instrument board should be wired to the 5V and GND on the barrel jack input. Additionally, the 5V and GND pins on the Texas Instruments board should be wired to the 5V and GND pins on the Arduino to power the boards. The DI05 pin (Orange Wire) and DI04 pin (Yellow Wire) should be wired to the A4 and A5 pins on the Arduino, respectively. This will allow the Texas Instruments board and Arduino to communicate over I2C.  The IR LED (Red Wire) is wired to the positive pole (5V) of the barre...

This post outlines the wiring of the Nurse Call device for offline control with Amazon Alexa. To see how this device is connected in the hospital rooms, refer to this post .  This outlines the wiring for the offline Nurse Call device using Amazon Alexa. The following design uses the parts listed in a previous post , along with a custom 3-D printed holder for inside of the project box enclosure. The two 1/4" mono jacks are wired in parallel. One is to be used as an input for a manual call light switch, and the other is to be used as an output for the call light system. One of the poles of the 1/4" mono jack is connected to the COM pin on the relay (Black Wire), and the other is connected to the NO pin (Red Wire).  The DI06 Pin on the Texas Instruments board is wired to the IN (input) pin on the relay (Green Wire) to trigger momentary closure. The 3.3V pin and GND pin on the Texas Instruments board are wired to the VCC pin (Red Wire) and GND pin (Black Wire) on the relay, respe...