Viewing profile — i2pi

Love this!

(void) space. :P

Given that this is HN, I should add that I used the wonderful ray-optics Python package for doing the optical design: https://ray-optics.readthedocs.io/en/latest/

I was challenged to make a lens for a friend without buying any new optical elements. I have a pile of glass that I've salvaged from old camera lenses that I've modified. I wanted …

Now try 430Hz.

As someone who has just moved back to Australia after ~20 years in the USA, I was surprised to notice how many people reverse park here. It seems to be an ego thing , particularly …

Muscle movements, think talking, chewing, or blinking, generate voltages orders of magnitude higher on the scalp than sources from neural activity inside the skull.

I'm the CTO at Seer Medical, we make a wearable EEG device that's designed to be worn for ~10 days, including during sleep. Totally agree that the electronics is not the difficult …

Really fantastic interview with Uri here at The Amp Hour: https://theamphour.com/599-an-interview-with-uri-shaked-wokw... It's quite a contrast to their previous interview with the…

You can read more about the underlying algo here: https://medium.com/seer-medical/finding-patterns-in-seizure-... Happy to answer questions about anything seizures, epilepsy, or me…

The gold standard for BP measurement is direct measurement via an arterial catheter - an invasive and relatively risky procedure. For a device to be approved as a Class 1 medical d…

I'm the CTO at a relatively well established medical device company (EEG/ECG). Before I arrived at my current company I spent a year of my own time tinkering in the BP space. The a…

We have p2p wifi between our barn and farm house. The barn is powered by solar. I use engenius WAPs, a 100Ah battery, 2 100W solar panels, a $15 solar charge controller, various bu…

Feel free to make it with Lead Free solder. See RoHS standards: https://en.wikipedia.org/wiki/Restriction_of_Hazardous_Subst...

The standards are now much higher, which may be limiting demand. It is far less attractive to apply for a new charter when your growth is curtailed and examinations are more intens…

Money transmission laws are irrelevant in this case. Standard Treasury was never keeping customer cash on their balance sheet, they were enabling APIs for banks. If you're a paymen…

De Novo charters are available, but in very limited supply. I think there have been maybe 5 new charters since the crash. Prior to 2008, 100's were issued annually. The problem wit…