Getting my emonCMS data on my phone – tank and room temperatures at a glance without opening the laptop.
Ultra low power sources for wireless nodes
Researching ultra low power sources for the Funky – including harvesting from a CT clamped around a live power line.
Atmega32U4 based micro node with RFM12B
Rethinking the Funky: an ATmega32U4 micro node with RFM12B – native USB means no ISP programmer and no core installs for users.
Low power receiver options
Low power receiver options for the RFM12B – how a battery node can listen for commands without keeping the radio always on.
Funky as remote temperature sensing node with DS18B20
Using the Funky as a remote room temperature node – a DS18B20 solders straight onto its pads, one per room before the heating season.
USB on the Funky
Experimenting with native USB on the Funky using FTDI’s tiny FT230XQ – inspired by the MicroFTX project.
Using Jeelab’s EtherCard library on the Micro Web Server (uIoT)
Bringing up Simon K.’s Micro Web Server with JeeLabs’ EtherCard library – the painful SMD assembly worked on first try.
Putting together Simon’s Micro Web Server
Assembling Simon K.’s Micro Web Server – tiny SMD everywhere, the base of my micro IoT gateway project.
Funky Wiki
The Funky sensor now has its own wiki – documentation moving out of scattered blog posts.
Using Funky’s boost regulator get steady 3.33V from higher voltage
Using the Funky’s LTC3525 boost regulator backwards – a steady 3.33V from higher, sagging input voltages.
Clocking the Funky sensor from RFM12B’s crystal
Clocking the Funky’s ATtiny84 from the RFM12B’s crystal – stable timing for IR and RF experiments the internal oscillator can’t do.
RFM12B to Raspberry Pi board
Discontinuing the TinySensor in favor of the Funky, and a dedicated RFM12B to Raspberry Pi board is coming – the RFM2Pi’s origin.
RFM12B shield for the micro IoT gateway
3D render of the RFM12B shield for the micro IoT gateway – keeping the top free for micro SD and other expansions.
3D modelling of PCB designs
Turning Eagle PCB layouts into 3D Sketchup models with EagleUp – my boards rendered before the fab even ships them.
Micro IoT gateway
The micro IoT gateway begins: my own small Internet of Things gateway based on Simon Küppers’ ATmega + ENC28J60 micro Web Server.
Super ‘Funky’
The Super Funky gets both a voltage regulator and the step-up circuit – you pick which to use per application.
Interfacing ‘Funky’ to Raspberry Pi
Funkys have taken over my projects, so the TinySensor is on its way out – shields for the Funky are the better path.
Measuring humidity and temperature with DHT22 and Funky
The DHT11 turned out to be a bad joke, so I upgraded to the DHT22 for outside temperature/humidity feeding my heating automation.
Clocking ATTiny84 from RFM12B (thinking outloud)
Thinking out loud on clocking the ATtiny84 from the RFM12B’s crystal – a stable external clock without spending an extra part.
Updating my SMS doorbell
SMS doorbell updates: emonCMS email notifications finally working via the built-in mail function – no shell access, no PEAR, no problem.
‘Funky’ sensor in store
The Funky sensor is now in the store, with Tobias Floery’s blessing – PCB only, regular, or with the voltage step-up circuit.
Hooking my wireless doorbell to the Internet
Hooking my cheap wireless doorbell to the Internet – an SMS when someone rings, for when I’m in the backyard or away from home.
RaspberryPi+TinySensor as EmonBase
TinySensor + Raspberry Pi as my emonBase – a lightweight perl script replacing the CPU-heavy PHP serial reader.
Solar Funky
Stuffing a Funky into a one-euro solar garden lamp – free enclosure, free NiMH battery, free charging. Solar-powered wireless node.
64 800 transmissions
64 800 transmissions on one CR2032: the TinySensor sent power readings every 10 seconds for 7.5 days straight – battery analysis inside.
Getting Funky
The Funky sensor PCBs arrived – an ATtiny84 with an RFM12B on top, barely larger than the radio module itself.
CR2032 powered “current only” remote monitoring
How long can a CR2032 sustain heavy duty work? A TinySensor measuring current and transmitting every 10 seconds, until it dies.
TinySensor Wiki
The TinySensor gets a wiki – assembly notes and documentation now live in one place, linked from the top menu.
TinySensor 1.4 PCB is ready
TinySensor v1.4 PCB is here – now with a 3.3V FTDI connector for serial debugging, programming over it comes next.
Setting up Arduino IDE for working with Attinys
Setting up the Arduino IDE for ATtiny84/ATtiny85 development – the exact steps and files that worked for me.
DIY soil moisture sensor project
A DIY soil moisture sensor for my greenhouse monitoring project – schematic, probe build and why making your own is quite easy.
TinySensor v1.4 plans
TinySensor v1.4 plans: still through-hole for easy soldering, with fixes for all the issues found in v1.3 so far.