I live in a small village ~25km from Sofia, Bulgaria and commute daily to the city. My house’s alarm system would occasionally ring me and I would rush back home to see if all is fine, that can be pretty…
My dog as smart wireless DVR sensor
CR2032 battery discharge pattern
The Funky v1 + DS18B20 room temperature monitoring project that I installed in our living room on October 31st 2012 has stopped sending. This actually happened few days ago (Aug 10th 2013), but I just noticed it today while checking…
3D printed Stevenson screen
@Dimitrios commented the other day on my Funky+DHT22 post that my readings seem to have a lot of 99.9% relative humidity readouts and suggested that it may be due to the black box that I enclosed the project. I do…
7 months of sending and still going
My Funky+DS18B20 temperature logging project is still running on that same CR2032 battery ever since my original post back in Oct 31st 2012, that makes it 7 months of run time so far. I have a live chart here: It…
Funky LED candle
There is probably a million LED candle projects already, so I had to give it a try too :). I used bare Funky PCB and an ATTiny84 – no need for anything else indeed.The Attiny is set to run on…
Funky as remote temperature sensing node with DS18B20
With the winter heating season knocking on the door, I decided to measure the room temperature in every room in the house. The Funky is perfect for the purpose, as a DS18B20 temperature sensor can be soldered directly on its…
USB on the Funky
I recently came across a neat little (literally) project called MicroFTX. It is incredibly small USB to serial adapter board based on FT230XQ (datasheet) from FTDI’s new X-Chip series. I thought it would be neat to throw in some native USB support…
Funky Wiki
I have started work on creating a wiki for the Funky sensor – find it here
Using Funky’s boost regulator get steady 3.33V from higher voltage
I would typically think of a boost regulator in the case when I’d like to step-up voltage, and such were my intentions when I introduced the LTC3525 boost regulator chip on the Funky sensor. The idea was to be able to…
Clocking the Funky sensor from RFM12B’s crystal
I have already expressed my thoughts on this, and of course could not resist materializing them. The main reason is that I would like to experiment with IR and RF stuff that requires precise timings. The internal oscillator’s frequency depends notably on…
3D modelling of PCB designs
@Gadjet from http://www.gadjet.co.uk/ showed off some nice 3D renderings of his projects the other day in JeeLab’s forums and had me all excited about it. He used EagleUp, some nice peace of software that turns your Eagle PCB layouts into Google Sketchup…
Super ‘Funky’
Tobias’s original ‘Funky’ had voltage regulator, that I removed in my version in favor of a voltage step-up circuit. How about having both on the Funky and you will decide which one to use depending on the concrete application? Well,…
Interfacing ‘Funky’ to Raspberry Pi
I am finding myself using Funkys for all of my recent projects, so I am thinking of discontinuing the TinySensor. I think the better approach would be to have various ‘shields’ for the Funky rather having hardware on board that…
Measuring humidity and temperature with DHT22 and Funky
I have been playing with DHT11 for some time, only to find out that this sensor is a bad joke. I finally decided to upgrade to the DHT22, which is a magnitude better than the previously mentioned one. I wanted to be…
Clocking ATTiny84 from RFM12B (thinking outloud)
I have been thinking on the possibilities to use external clock source for my ATTiny84 projects for some obvious reasons. Using the internal oscillator works great in most cases, but may not be so accurate in some applications (IR,RF) as it…