I am a @quantifiedself

I accidentally landed on a site called ‘quantified self’ last month and immediately realized I am doing lots of lifelogging myself. I track my commutes, log my weight, my body temperature when sick, my hot water usage habits, visitors to my home, coffee drinking. Power usage tracking  and habitat monitoring provide useful insights on my…

Home voltage analysis

I log the AC mains voltage at my house starting July 2013, you may recall my post where I was concerned about the unusually high voltage readings at home. Now that I have few months of data collected, it is time to do some analysis. I have 405835 measurements in total since then, taken every…

Hello, world

I use Google Analytics on this blog to track visits and have collected statistics for couple years now. I toyed with these a bit today to see where are the visitors from, just out of curiosity and for no particular other reason. I used Tableau to generate the below stats, it connects to Google Analytics directly and has…

The YAPM PCB is done

It has been a while since my last post, I have a new job and little time left for hobby stuff 🙂 Anyway, I have put together the PCB for the Yet Another Power Monitor (YAPM) project and was able to do some preliminary tests over the weekend. To re-cap: the YAPM is a low cost…

Funky v3 PCB populated

As I mentioned the other day, I have Funky v3 PCBs waiting to be populated/tested. I did finally have some time to do that, here is how they look: I plan to use this particular one to run tests, so I soldered double-row female headers on the side headers: I tested it briefly, it works…

OLED status display on the RFM2Pi board

I added a 6 pin port on the RFM2Pi board that can be used for a number of applications. The port has GND, D3, D7, D6 and VCC routed, and by no coincidence matches perfectly the pinout of the Digole 0.96″ OLED Serial display that I toyed with previously. The OLED PCB is exactly the…

Funky v3

I have made a major reshuffling of the Funky v2, added 8 more pins to the side headers while keeping the form factor. I had to go for ‘pads’ instead of through-hole to make this possible:     The newly routed pins are D9, D7, D12, D6, A3, A4, D0 and D1; The on-board LED…

Yet another power monitor

I seem to be doing power monitoring projects a lot, started with this one, then moved on to this, then this and now I am again putting up a power monitor.. This particular will be using a small transformer with two secondary windings: one will be used to power the circuitry and the other for…