2024-12-15 15:41:34
Nordic Semiconductor recently made their new IoT prototyping platform, the Thingy:91 X, generally available. The Thingy:91 X is an upgrade to their existing prototyping platform, the Thingy:91, replacing the nRF9160 System-in-Package (SiP) with an nRF9151 SiP, the nRF52840 System-on-Chip (SoC) with an nRF5340 SoC, and adding the nRF7002 integrated circuit (IC). Each of these components enables a different type of connectivity: nRF9151: cellular (LTE-M / NB-IoT), DECT NR+, GNSS nRF5340: Bluetooth LE, 802.
2024-11-24 15:41:34
Well, not this one. But this one is! How? Let’s take a closer look at Bluesky and the AT Protocol that underpins it. Note: I communicated with the Bluesky team prior to the publishing of this post. While the functionality described is not the intended use of the application, it is known behavior and does not constitue a vulnerability disclosure process. My main motivation for reaching out to them was because I like the folks and don’t want to make their lives harder.
2024-11-11 15:41:34
The ESP32-S3 is a popular microcontroller (MCU) for a variety of reasons, such as its support for external pseudostatic RAM (PSRAM). One of its lesser known features is its Universal Serial Bus (USB) On-The-Go (OTG) controller. The previously released ESP32-S2, as well as the new ESP32-P4, also have USB OTG support, with the latter having two controllers. USB OTG devices can act as a device or as a host. This is a popular feature for smartphones, which, when attached to a laptop or desktop should act as a device, but may want to act as a host for some peripherals, such as a keyboard, that may be attached to it.
2024-10-20 15:41:34
Three weeks ago I wrote the following draft of a blog post entitled “Is It Better to Fail Spectacularly?”. I am having a lot of doubts. I’ve been training for the Chicago Marathon in earnest since June, but in reality the preparations began a year ago when I was accepted based on my qualifying time from the 2023 Ventura Marathon. I don’t have doubt that I can run a marathon. I have run three in the last year and a half, and I routinely go on weekend long runs that approach or surpass 20 miles.
2024-09-29 15:41:34
Isolating sensitive data and operations is a fundamental issue in computing. Ideally, we want to minimize the possibility of a software defect compromising the security of a device. However, in order for the software we write to be useful, it typically needs to interact with that sensitive data in some form or fashion. So how do we interact with sensitive data without being able to access it? The answer is that we bring only the operations that must access the sensitive data closer to the data, then force all other software to invoke those operations via some sort of interface.
2024-09-03 15:41:34
Paul Graham’s Founder Mode essay, based on a recent talk from AirBnB founder Brian Chesky, has been getting quite a lot of attention over the past few days. It has prompted many a quote tweet, and founders, such as Bryan Cantrill of Oxide Computer, have started contributing their own thoughts to what founder mode means to them. Having held positions of influence at a few companies, but never having been a founder myself, my initial read raised a few thoughts about my own experience of trying to “scale myself” in a growing organization.
