Video: the LTC3108 energy harvesting board pulling power from a solar cell lit by a single 23W CFL a meter away.
Drat, and double drat!
The new Funky v2 draws a constant 3mA no matter the sleep mode – hoping it’s software, not a hardware design flaw. Investigating.
Energy harvesting breakout board
A small LTC3108 energy harvesting breakout board based on Robert’s design – DC/DC conversion from extremely low input voltages.
Raspberry Pi TFT board
Laying out a proper Raspberry Pi TFT board – a non-rectangular PCB that sits on top of the Pi, off to the fab house.
Using my 1.8 TFT as a Raspberry Pi status display
Turning my 1.8″ TFT into a Raspberry Pi status display showing house telemetry pulled from emonCMS.
1.8″ TFT LCD display on Raspberry Pi
Running a cheap 1.8″ ST7735R TFT on the Raspberry Pi with a modified kernel – the display that was too memory hungry for an Arduino.
Using the LTC3108 breakout board with a TEG
Testing the LTC3108 energy harvesting breakout – burned my Peltier TEG, so a solar cell steps in while new parts arrive.
Energy harvesting
First build of Robert’s LTC3108 energy harvesting breakout – aiming for a battery-less Funky sensor node.
Toying with a 1.8″ TFT LCD display
Reverse-engineering a cheap undocumented 1.8″ TFT from ebay – turns out to be an ST7735R, and it even has an SD slot.
2boots bootloader on the uIoT: Serial + MMC bootloader in 2Kb
Running the 2boots bootloader on the uIoT gateway – serial stk500v1 plus loading .hex files straight off an MMC card, all in 2KB.
Raspberry Pi as IP webcam
Turning a Raspberry Pi and an old USB webcam into an IP camera with motion – the Instructable had errors, here are my exact steps.
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.
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.
E-meter PCB ready
The e-meter PCB arrived and is coming together – a wrong 2×8 header footprint and two missing parts, otherwise looking good.
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.
Remote keyboard and mouse for Raspberry Pi
Sharing my laptop’s keyboard and mouse with the Raspberry Pi over the network – no remote desktop, no dedicated peripherals.
Display for my Raspberry Pi
A $25 4.3″ car backup camera TFT from Ebay as a status display for my Raspberry Pi – specs, wiring and first impressions.
3D modelling of PCB designs
Turning Eagle PCB layouts into 3D Sketchup models with EagleUp – my boards rendered before the fab even ships them.
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.
‘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.
RaspberryPi+TinySensor as EmonBase
TinySensor + Raspberry Pi as my emonBase – a lightweight perl script replacing the CPU-heavy PHP serial reader.
Dropbox shell script for RaspberryPi
Dropbox Uploader, a bash script for the Raspberry Pi – handy for keeping files synced while juggling SD card images.
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.
Using a LDR (light dependent resistor) and DHT11 temp/humidity sensors
Adding an LDR and DHT11 to my greenhouse monitoring project – light intensity, air temperature and humidity logged to emonCMS.
RFM12b to serial PCB for my Pi
A small home-made PCB that permanently fits the RFM12B-to-serial module on my Raspberry Pi – simpler than the native SPI efforts.
Capture, decode and log to emoncms RFM12B packets on Raspberry Pi
Capturing RFM12B packets on the Raspberry Pi, decoding them and logging to emonCMS – the receiving side of my sensor network.
Manic Miner on my Pi
Manic Miner on the Raspberry Pi via the Fuse Spectrum emulator, plugged into an old CRT TV for realism – 27 years melt away.
Interfacing RFM12B to Raspberry Pi for cheap
Interfacing the RFM12B to the Raspberry Pi for cheap – a TinySensor on the Pi’s UART relays packets onward to emonCMS.
TinySensor PCB is ready
15 TinySensor v1.3 PCBs arrived – RFM12B works, the ISP connector doesn’t (my mistake), programming on a breadboard for now.