joey castillo
@joeycastillo.bsky.social
purveyor of Oddly Specific Objects
wow okay there are dark patterns and there are DARK patterns…
September 11, 2025 at 10:22 PM
wow okay there are dark patterns and there are DARK patterns…
when it comes time to assemble this thing, future-joey owes me a beer for being so thoughtful
February 2, 2025 at 7:21 PM
when it comes time to assemble this thing, future-joey owes me a beer for being so thoughtful
Ladies and also ladies, I have good news…
January 22, 2025 at 2:21 AM
Ladies and also ladies, I have good news…
Solving a Sensor Watch motion problem: sleep looks like long periods w/o motion, but so does taking off the watch. By adding one more signal to the mix, I think we've got it: a long stationary period generally means sleep, unless accompanied by a rapid temperature drop. Then it's an off-wrist event.
November 30, 2024 at 3:14 PM
Solving a Sensor Watch motion problem: sleep looks like long periods w/o motion, but so does taking off the watch. By adding one more signal to the mix, I think we've got it: a long stationary period generally means sleep, unless accompanied by a rapid temperature drop. Then it's an off-wrist event.
Last week I finished my final code for the Sensor Watch accelerometer. Just plotted the data I gathered at 5 minute intervals — orange represents orientation change events, and blue represents minutes without any motion at all — and I'll be damned if that doesn't look like sleep & activity tracking.
November 25, 2024 at 3:24 PM
Last week I finished my final code for the Sensor Watch accelerometer. Just plotted the data I gathered at 5 minute intervals — orange represents orientation change events, and blue represents minutes without any motion at all — and I'll be damned if that doesn't look like sleep & activity tracking.
Samples of a last-minute change to the accelerometer board arrived last week. Been wearing it ever since; seems all good! This morning I finished a self-test procedure that lets me quickly validate all the functionality of manufactured boards, and just like that, an order for 2000 more is in flight.
November 23, 2024 at 10:38 PM
Samples of a last-minute change to the accelerometer board arrived last week. Been wearing it ever since; seems all good! This morning I finished a self-test procedure that lets me quickly validate all the functionality of manufactured boards, and just like that, an order for 2000 more is in flight.
found while digging around for an Arduino. This is not my handwriting.
November 11, 2024 at 8:54 PM
found while digging around for an Arduino. This is not my handwriting.
I will be bringing a couple dozen of these with me to Hackaday Supercon. The "Sensor Watch" SAO is not Sensor Watch — hence the quotes — but it is an I²C segment LCD driver that's easy to control with MicroPython. To get folks started, I have once again put copious documentation on the back side :)
October 28, 2024 at 6:42 PM
I will be bringing a couple dozen of these with me to Hackaday Supercon. The "Sensor Watch" SAO is not Sensor Watch — hence the quotes — but it is an I²C segment LCD driver that's easy to control with MicroPython. To get folks started, I have once again put copious documentation on the back side :)
Last night I finished a sleep tracking proof of concept for Sensor Watch Pro: it counts orientation changes & motion events per hour. Adds 600 nA to the power budget. Sensor Watch data at left; Oura data at right. Note the period of Deep Sleep, and that period of low motion counts from 1:00-3:00 AM…
October 20, 2024 at 3:24 PM
Last night I finished a sleep tracking proof of concept for Sensor Watch Pro: it counts orientation changes & motion events per hour. Adds 600 nA to the power budget. Sensor Watch data at left; Oura data at right. Note the period of Deep Sleep, and that period of low motion counts from 1:00-3:00 AM…
see, if I were cleverer I would have used my return-from-the-void post to share an actual photo of Sensor Watch Pro, and mention that it's live on Crowd Supply. But hey: better late than never. www.crowdsupply.com/oddly-specif...
October 19, 2024 at 10:54 PM
see, if I were cleverer I would have used my return-from-the-void post to share an actual photo of Sensor Watch Pro, and mention that it's live on Crowd Supply. But hey: better late than never. www.crowdsupply.com/oddly-specif...
Testing, testing: is this working? I'm going to try to be active on all the non-Twitter socials, thanks to an app that lets me cross-post stuff. Anyway here's a gadget: today's work power profiling Sensor Watch Pro's new accelerometer add-on.
October 19, 2024 at 10:10 PM
Testing, testing: is this working? I'm going to try to be active on all the non-Twitter socials, thanks to an app that lets me cross-post stuff. Anyway here's a gadget: today's work power profiling Sensor Watch Pro's new accelerometer add-on.