So, we have working game code for the trauma bear. See the attachments for that.
The first file the processing code and the second is the arduino code.
Photos and videos to come.
So, we've got that main processing code ready to go! Sort of. Inti has kicked ass getting the physical states codified, and the processing code looks great with the graphics that Tracy posted. I now need to combine the physical pieces that Jay has built for the intubation and ventilator and accelerometer (all of which are killer!) with the Arduino code with the finished state machine and get the thing running.
Very, very soon, this bear will live! And then die!
Processing code is attached below.
Just a bit of pseudo-code that shows the state transitions in our trauma bear project.
start *random -> convulse_cardio -> convulse_flatline -> convulse_gi convulse_cardio *time < 20 && comp >= 6 && accel. == BACK -> stable *else -> death convulse_flatline *time > 10 -> any_touch convulse_gi *time > 5 -> shallow_vital stable *time > 10 && accel. < error_movement -> well *else -> need_more_comps dead *reset_button == HIGH -> start well *reset_button == HIGH -> start shallow_vitals *accel. == SIDE && time < 15 -> ready_to_intubate *intubated == HIGH && time < 15 -> tube_convulse *else -> death need_more_comps *time < 20 && comp >= 6 && accel. == BACK -> stable *time < 20 -> need_air *else -> death need_air *intubated == HIGH && pumps >= 6 && time < 20 -> stable *else -> death flatline *flatline_total < 3 && paddles_applied && time < 20 -> paddled *else -> death tube_convulse *intubated == LOW && time < 15 -> shallow_vitals *else -> death ready_to_intubate *intubated == HIGH && time < 15 -> intubated *else -> death intubated *accel. < error_movement && time > 10 -> well paddled *random -> needs_air -> flatline -> well any_touch *time < 20 && accel. > error_movement -> flatline *time >= 20 -> death
Here's what's new with the bear project as of yesterday:
One vibrating motor is positioned in a knit cap at the base of the skull. A second one is place farther up on the head. By tweaking the timings and intensity, based on our original shooter interface, the user gets the feeling of a pulse travelling up from the back of his or her head.
As icing on this strange little cake, we put our big, custom-made rumbler in this helmet, which fits over the top of the knit cap. The low-frequency shaking adds just the right kind of touch to the shooting effect--it really rattles you a little bit.
Personally, I don't fit into the helmet. My noggin is huge. But for someone with a skull a few sizes smaller than mine, I can see this being a lot of fun. It's definitely very trippy.
The haptic bear we built has a beating heart and breathing lungs. The heart is a vibrating disc motor that pulses in the familiar rhythm. The lungs are a servo with an arm that pushes on a metal plate in the chest cavity.
The video doesn't really do him justice, but he is incredibly cute, despite his recent surgery:
We extended our haptic paddle to use three motors. The code now times the pulses between the three and randomly picks one of five points to hit. If it hits on the extreme of one side, the first motor fires, then the middle, than the one on the opposite end. The intensity reduces, too. If it's only slightly to one side, the side and middle fire at once, with reduced intensity, and then the far side fires. If the middle is the target, it fires at full intensity, then the two ends fire.
Cursory user testing has revealed some interesting results:
In order to put a project together, you'll need the following resources:
Copyright Mike Edwards 2006-2009. All content available under the Creative Commons Attribution ShareAlike license, unless otherwise noted.