Apparently, as I have found out, the MCP1703 will leak current if voltage applied to the output gate and nothing on the input, while the MCP1700 does not. This is the case, when you power the Funky v2 from a CR2032…
Funky v2’s LDO to blame for high sleep current. Now fixed
I have confirmed by suspicion that the on-board LDO voltage regulator is to blame for my troubles as described yesterday. I experienced the exact same situation with battery powered Funky v2 high sleep current as @Capnbry describes here, so I…
High sleep current issue with Funky v2 sorted out
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…
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…
Update on the Atmega32u4 based new Funky
I haven’t had the time to follow up on the Atmega32u4 based new Funky, I now have finalized the board layout (I think). This has been quite a learning experience for me, I only started work on a remote node with this…
Atmega32U4 based micro node with RFM12B
Having gained experience with the Funky sensor, I am starting thinking on how to further improve it. One of the things I recognized, is the somewhat difficult programming, the user is required to install Attiny84 core and to own an ISP programmer in…