Hacker News: thomasthorpe

New comment by thomasthorpe in "I created an open-source Hardware Hacking Wiki – with tutorials for beginners"

thomasthorpe — Tue, 14 Jan 2025 15:07:52 +0000

So it jumps into detail quickly and is written by a vendor but this is a pretty good guide handling the architecture and detail. See how read and writes use device and register addresses to issue requests, and responses are managed with clock pulses and bus arbitration.

https://www.ti.com/lit/pdf/sbaa565 [pdf]

New comment by thomasthorpe in "Alarms in medical equipment"

thomasthorpe — Fri, 07 Jun 2024 20:17:31 +0000

Yes, well, some. To gain certification, often something customers require, medical devices must comply with standards such as ISO60601 (hardware) ISO62304 (software) and ISO13485 (process, quality management).

The alarm waveforms described are within the scope of the hardware standard guidelines, sufficiently common that application notes such as this exist. https://www.ti.com/lit/pdf/slaaec3 [ti.com]

New comment by thomasthorpe in "Interfaces for prototyping hardware"

thomasthorpe — Sun, 03 Sep 2023 22:56:01 +0000

It can be indirectly. Addons exist to for instance convert the mathematical models described in Simulink to code (C, VHDL..) deployable to hardware targets. So, algorithms can be developed in simulink and then integrated into an embedded application without manual translation.

New comment by thomasthorpe in "Ask HN: Courses/textbook recommendations for studying robotics?"

thomasthorpe — Tue, 04 Apr 2023 19:22:49 +0000

Try the Robot Operating System documentation for the software and control side. If you can write the low level drivers then the ROS stack abstracts the IK and other middleware layers allowing you to focus on app and problem spaces.

https://docs.ros.org

New comment by thomasthorpe in "Ask HN: Courses/textbook recommendations for studying robotics?"

thomasthorpe — Tue, 04 Apr 2023 19:18:30 +0000

The Niryo arm is a high quality kit with good software support package if not updated as often as it could be

https://www.niryo.com

New comment by thomasthorpe in "I fixed my broken monitor with a hair dryer"

thomasthorpe — Sat, 14 May 2022 12:39:58 +0000

Old thread now. But often a minimum load is needed for an LDO, particularly on older parts, to work correctly. Such that these are given in datasheets. This is continuously required so is effectively quiescent current. I think this is what the OP was trying to get at.

But failed capacitor reulting in instability seems much more likely.