The hottest Sensors Substack posts right now

And their main takeaways
Category
Top Technology Topics

Lies, damned lies, and photodiodes

lcamtuf’s thing • 2040 implied HN points • 09 Dec 24
🕹 Technology Electronics Engineering Optics Sensors Measurement
  1. Photodiodes can have a wide range of response speeds, and the advertised specs often don't tell the whole story. It's important to understand how they are tested, as this can affect their performance.
  2. When building precise measurement devices with photodiodes, two types of currents play a role. One is fast, while the other can take much longer to settle down, impacting the overall signal quality.
  3. Using techniques like reverse bias can improve performance, but some effects are inherent to the photodiodes themselves. Understanding these limitations is key for achieving accurate measurements.

Near-Field Technology - An Emerging RF Discipline

Fields & Energy • 259 implied HN points • 29 Jul 24
🕹 Technology Wireless Technology Communications Sensors
  1. Near-field technology focuses on short-range wireless communication, which is useful for applications like NFC and RFID. This tech works well because lower frequencies can pass through obstacles and provide reliable connections.
  2. The near-field zone, where signals are stronger and behave differently than in far-field, is often overlooked. Understanding this area can improve antenna design and application.
  3. There is a growing demand for near-field applications in everyday uses like contactless payments and real-time location tracking. This presents new opportunities for innovation and development in the tech industry.

The midwit home

DYNOMIGHT INTERNET NEWSLETTER • 416 HN points • 12 Oct 23
🕹 Technology Sensors Automation
  1. Smart homes can be complicated and require a lot of technical knowledge to set up and maintain.
  2. Simple, midwit solutions like remote-controlled outlets, motion-sensing bulbs, and mechanical outlet timers can make daily tasks easier and more convenient.
  3. Using basic power control for devices can offer a surprisingly effective and user-friendly home automation experience.

Kickoff of 2024 SVR Robotics Accelerator

Robots & Startups • 59 implied HN points • 29 Jan 24
🕹 Technology Robotics Investment Events Startups Sensors
  1. Kickoff meeting for the SVR Startup Accelerator is happening on January 30th for robotics startups at any stage.
  2. Private equity investors like Resurge Growth Partners are offering struggling startups a second chance amid a drop-off in VC funding.
  3. Luxonis has introduced the OAK-Thermal for pre-order, expanding its platform with a thermal sensor for numerous potential applications.
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Sensors, Anomalies, and RPKI Refresh

Dataplane.org Newsletter • 19 implied HN points • 03 Oct 22
🕹 Technology Sensors Data Analysis
  1. Dataplane.org has over 300 sensors in operation across 6 continents, providing valuable data from a wide range of networks.
  2. Unexpected anomalies like DNS query spikes can provide insight into network behavior and the importance of understanding data context.
  3. Dataplane.org plans to rebuild their RPKI setup due to ongoing issues caused by a previous experiment, aiming for simpler, more reliable monitoring in the future.

Sensor Strategy, Monitoring Platforms

Dataplane.org Newsletter • 19 implied HN points • 04 Apr 22
🕹 Technology Sensors Platforms Infrastructure Networks Monitoring
  1. Sensor nodes monitor internet activity and contribute to data collection without generating traffic, resembling a mix of darknet collector and honeypot.
  2. Choosing hosting providers involves factors like unique origin, support for secure payment methods, provider reputation, and fraud detection practices.
  3. Monitoring platforms like Censored Planet, NLNOG Ring, OONI, and RIPE Atlas offer unique approaches to internet censorship measurement through distributed systems.

Robotics research humor, sensors map, recent fundings

Robots & Startups • 0 implied HN points • 07 May 21
🕹 Technology Robotics Sensors Funding
  1. TuSimple, an autonomous truck startup, raised $1.08 Billion and has 5,700 reservations for self-driving trucks scheduled for production in 2024.
  2. Vicarious Surgical and Sarcos Robotics are going public via SPACs, showing a growing trend in funding for robotics companies.
  3. The post discusses robotics research humor, sensors map, and recent fundings, providing insights into the robotics industry's current landscape.

Simultaneous Localization and Mapping

The Halfway Point • 0 implied HN points • 26 Apr 24
🕹 Technology AI Sensors Statistics Robotics
  1. Self-driving cars need to know their exact location to avoid accidents. GPS and sensors like RADAR have errors, so it's tricky to get precise positioning.
  2. The Kalman filter helps improve the accuracy of measurements by combining noisy data over time. It has two main steps: updating measurements and predicting motion.
  3. For complex situations, there are advanced versions of the Kalman filter, like the Extended and Unscented Kalman filters, which can handle non-linear data better for more accurate tracking.

Low Cost Accurate Air Quality Sensor (PM/Temperature/Humidity)

The Halfway Point • 0 implied HN points • 26 Apr 24
🕹 Technology IOT Sensors Microcontrollers Programming Air Quality
  1. You can build a low-cost air quality sensor using an ESP32 for under $120. It's a great way to monitor air quality without spending too much money.
  2. This sensor not only shows air quality data on a local website but also sends it to the cloud and alerts you when the air quality is poor. It's pretty handy!
  3. You can set everything up without soldering, making it easier and safer to use, especially in a small space where fumes might be a problem.