npct
No phone contract tracer project (by tbensky)
dorothy
A minimalist, open-source, low-cost sensor platform built around the LoRa protocol (by alexose)
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
npct
Posts with mentions or reviews of npct.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-04-27.
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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
Back during the pandemic, hardware-based contract tracers were an idea. I built one using the ESP32; see https://github.com/tbensky/npct. In a nutshell, everyone generates a (non-centralized) hash for themselves based on local entropy. This hash is set to the BLE name of the ESP32. Turn it on and throw it in your backpack as you go out. When two ESP32s pass by each other, they both log the other's BLE name (hence hash). Later on, hash logs could be inspected and uploaded to a central server so you can see who encountered who. Seems like there's still some (non-Covid) applications for this (but I can't think of any). Fun project. Learned a lot about Bluetooth.
dorothy
Posts with mentions or reviews of dorothy.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-04-27.
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Agricultural IoT System Sends Power Through the Soil
This is a really cool idea for lots of reasons, but especially because you could leave sensors buried forever. This lends itself well to long term soil monitoring, which is a somewhat unsolved problem (especially in no-till environments).
Agriculture is a harsh place for sensitive electronics. My approach has been to make them cheap enough to be nearly disposable (shameless plug, https://github.com/alexose/dorothy), but this still requires a lot of human intervention to keep everything chirping.
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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
I built out a remote sensing platform using ESP32 + LoRa. The attempt was to hit the sweet spot between cheap, easy, and reliable:
https://github.com/alexose/dorothy