I collaborated with three engineers to create PajamaDuty, a wearable that alerts the wearer to a PagerDuty incident. The goal of PajamaDuty was to eliminate the need to keep a phone with the wearer. While sleeping, a PagerDuty alert is triggered and the PajamaDuty shirt would wake the wearer up with lights and an offset motor.
We built PajamaDuty using serveral components: a Bluetooth-capable microcontroller board compatible with Android called IOIO (pronounced yoyo), LEDs, an electric offset motor, a USB bluetooth dongle, conductive fabric, conductive thread, and a 9V battery. All electrical components were assembled and the board was programmed using an open source Android library. Everything was then stitched into a t-shirt using the conductive thread.
How it works
An alert sends an SMS to your phone. Your phone would then send a message to the IOIO board that is wired to light up and set off the motor. The user would wake up and acknowledge the incident by tapping the large button 3 times located in the left shoulder of the shirt. Why 3 times? To ensure that the wearer didn’t roll over and acknowledge the incident accidentally.
The acknowledge button on the shoulder was made using two pieces of conductive fabric separated by sponge material. Pressing the two pieces together closes the circuit. Conductive thread was used for its flexibility and light weight to connect all of the components.
PajamaDuty pajama pants
I also designed and made a pair of PagerDuty branded pajama pants. Because ... Why not? I burned a silkscreen with the PagerDuty logo, screenprinted the logo in two colors repeatedly on a soft black knit fabric. Once the print was dried, I heat-pressed the ink. I then cut the pattern pieces for the pajama pants and sewed them together. The fabric pieces were cut on the bias for more stretch and for a more dynamic look. The pants also have pockets!