The Funky v2 high sleep current situation turned to be my multimer going crazy when using a noisy 3.3V power supply. When powering the Funky v2 from couple AA batteries, I got 0.13-0.14mA sleep current using the sketch below. Still…
Drat, and double drat!
Testing the new Funky v2’s low power modes early this morning, I got a constant draw of 3mA, no matter the sleep mode and power saving techniques used.. “Drat, and double drat!” I hope it is a software thing, not a hardware…
Funky v2 – finally
I got the revised Funky v2 PCBs yesterday and just finished putting together one. It is a painful (eye-hurting too) process, since I do the soldering by hand. It took me 1.5hrs to build this one, I will have to come up…
RGB LED
I’ve never played with RGB LEDs before, got myself couple to try out on Funky v2. The Funky v2 only has 1 pin with PWM, so I used the SoftPWM library instead: An Arduino library to produce PWM signals on…
Energy harvesting breakout board
I have put up a small LTC3108 breakout board based on Robert’s design that I also tested out. A re-cap for those that didn’t follow my energy harvesting posts: The LTC3108 is a highly integrated DC/DC converter ideal for harvesting and managing…
Raspberry Pi TFT board
I enjoy my DIY TFT board so much that I decided to create a more permanent setup. I laid out a board design that will have non-rectangular shape and supposedly fit better on-top the Pi. Here is how it…
Using my 1.8 TFT as a Raspberry Pi status display
I have been experimenting with my Raspberry Pi TFT display these few days with the intention to use it as a misc status display, heavily influenced by Mark‘s work. I collect most of my house’s telemetrics to an emoncms installation running on…
New RFM2Pi board in the works
Glyn Hudson and I have been working on a new RFM2Pi board revision, nothing revolutionary, just a small upgrade. The most important features of the board are: Atmega328 based, has more memory and hardware serial support Runs on the internal…
Funky v2 gets its own USB VID/PID pair
As with every USB device out there, the Funky v2 needs an unique Vendor ID and Product ID combination so that it is recognized and USB compliant. Unfortunately, purchasing a Vendor ID costs fortune and is out of the question…
433Mhz OOK with Funky v2 to remotely control power sockets
Here is a 15 minute project: control 433Mhz RF sockets with the Funky v2: I have a 433Mhz OOK transmitter/receiver, I don’t even recall where I got them. These are widely available on ebay for less than $5 delivered. I…
Receiving IR with Funky v2
I ran a quick test today to see how Ken Shirriff’s IR library behaves on the Funky v2. One of the things I noticed in my current design is that I don’t have a pin with timer output routed to…
Power saving techniques on the Atmega32u4
Now that I have a Funky 2 prototype, I can toy with what I am most interested in: reducing power usage so that the Funky can operate on battery as long as possible. I have achieved amazing results with an…
Funky v2 (well almost)
I’ve finally put together an Atmega32u4-based USB Funky late yesterday. Soldering the QFN44 chip and 0402 sized elements wasn’t as hard as I thought, I did it myself: Of course, there had to be issues, namely I have swapped the MOSI/MISO…
1.8″ TFT LCD display on Raspberry Pi
[edit] This project is now available for sale in the store I figured my cheap 1.8″ TFT display is useless on an Arduino as it pretty much eats the available memory (20K for simple sketches), so I decided to try it…
Using the LTC3108 breakout board with a TEG
As I mentioned already, I burned my old Peltier element before receiving the LTC3108 breakout PCB, so I couldn’t test that setup. So I went and hooked a solar cell, but the configuration I have on the PCB is not optimal…