Weeknotes: It’s raining sensors

Well, prototypes of sensors.

I have been playing around with the piezo sensor to measure the pressure on a surface. I have been using a milk bottle as a testing environment to act as a surrogate for a plastic surface to test the code. This goes with the rain gauge, using the HC-SR04 distance sensor. Next up would be to find out how to calibrate the data. One idea is to see how many of these can be put into one board to reduce the amount of hardware required. This also means looking at splicing wires together.

I attached the 2.4GHz antenna for the Raspberry Pi Compute Module to the HackRF via the SMA connector and got some data using the hackrf_sweep in the 2.4GHz range. The existing spectrum analyzers do seem a little interesting higher end data but may be this is a minor research project as well as turning the data into a WAV file.

Both projects explore sound as a signal as well as allowing it to be processed into other representations.

Next up is a turn back to more traditional network models to explore the Fediverse data in a different way.

Weeknotes: sensors and so on

A relatively quiet week really. I put in an order for some equipment from PiHut, such as resistors and capacitors along with distance sensors to crack on with looking at audio interventions with the weather such as sonic anemometers and rain gauges. I did some come across a disdrometer which looks very appealing. Just waiting […]

Weeknotes: Listening to the Air Waves

This week I bit the bullet and plugged in some machines. I bought a HackRF One from Martin Lynch and Son with an ANT 500 antenna. I installed hackrf and gnuradio through Homebrew, which is not with out its perils. The gnuradio version (3.10) that is installed does not have the osmocom component so I […]

Social Audio

Social Audio is a new term to me in this guise. I enjoyed Brian Cantrill’s talk, Social Audio as a Vector For Engineering Wisdom, about Oxide’s use: https://youtu.be/W8qiDhlFVCE. I do like the idea for multiple voices in a meeting and sharing information. I do wonder if this is amenable to digital methods and combining the […]

Weeknotes: Phones and the Environment

A couple of weeks ago, I decided to follow up a query that I had about tracing the way that the Bluetooth signal is constructed through the various layers of software and hardware. My interest is software but this does interface with hardware sensors on the phone. I took the phone apart using screw drivers […]

Weeknotes: overdue musings

I spent the best part of a week in Dublin where I presented at the Synthetic City conference on Unheard City and Unheard Spaces. The conference was thought provoking with some great conversations, but there is work to do. Must make the app releasable along with some of the methods. I made a start on […]

Weeknote: Planning, microphones, and Arduinos

I have been taking a break over the last few days, so little work to add to the notes. I did play around with an old pot of Bare Conductive paint and using their Arduino library. I do need to get some new paint but the initial idea seemed to work. As a follow up, […]

Weeknotes: Thesis, tea, and the future

I was delayed last week by sorting out things for my parent for most of last week. I submitted my thesis. That was the big thing and hopefully I will get my preferred external examiner. I began to reconnect to people whom I had not talked to in quite a while, so l am looking […]

Weeknotes: Inventory and Thesising

This week featured some time beginning a device inventory at work, something that we have been thinking of for a while. It reminds me that I must complete the image for the server infrastructure, which I fear I may have made too complicated for now. I completed the skeleton of the text analysis skills sessions […]

Shared Standards

I am parking this here as an example of shared standards between Google and Apple (TechCrunch). Android have announced a feature to identify tracking devices with a view to creating a shared specification at some point. The idea of shared specifications has appeared before but it is something that is worth tracking for now as […]