IKEA Samtid mood-light BT firmware — simple_serial

This firmware for the ISML + HC-05 Bluetooth module currently implements the same simple interface as the current WiFi-code named ‘browser_control’.

SET:mode=0&start=0&stop=63&hue=100&sat=100&val=100&

Pairing the ‘HC-05’on linux using the command line (openSUSE 13.2):

When first powered on, the HC-05 module will blink its status LED rapidly, indicating that no link has been established.

Continue reading

Posted in Arduino. | Tagged , , , , , , , | Leave a comment

Importing LEDs from China — Battle with customs follow-up

Behold, the stickers of DOOM…

If you should find any of these on a shipment to you, prepare for battle!

IMGP12572

Continue reading

Posted in Electronics. | Tagged , , , , , , , , | 4 Comments

HZA — Won the battle, but not the war

I ordered a couple of WS2812B on Aliexpress more than THREE months ago. Boy what trouble that has conjured up!

The seller on Aliexpress now probably thinks I’m a crook, because I missed an email that asked me to provide the customs forms to prove my shipment was held by them. Sometimes I get so many emails that I must have missed it. Oh well… I’ll have to get in touch with him (or her) and sort things out.

The final ruling by the HZA: I’ll have to pay 19% import tax, then can pick up my stuff and leave. Yay.

Continue reading

Posted in Electronics. | Tagged , , , , , , , , | 2 Comments

Status lamp on the loose — Partial oven teardown

IMGP12501

ARGH! I can’t be having with that! I do hope this lamp is a low voltage one…

Continue reading

Posted in Fix me. | Tagged , , , | Leave a comment

Soldering for masochists — LED indicator 0402 edition

0402

Purple circuit boards are available on oshpark. $2.30 for a three-pack (free shipping).

Continue reading

Posted in Electronics. | Tagged , , , , | Leave a comment

ISML + WiFi — ESP8266 finally tamed, but…

Preliminary testing of WiFi control using the ESP8266 module.

Continue reading

Posted in Electronics. | Tagged , , , , , , , , , , , , | Leave a comment

ISML killed 1st power supply — short autopsy

Last night I experienced a slight audible annoyance, coming from the #ISML power supply (5V-3A). Shortly thereafter the light literally went out, permanently. I noticed a very faint smell of burnt electronics, but delayed the autopsy until today.

IMGP12256

Continue reading

Posted in Electronics. | Tagged , , , , , , | Leave a comment

Throwing out old trash — impromptu tear-down

IMGP12222

Everything must go! What a good excuse to “Take it apart!” ;-)

Continue reading

Posted in Electronics. | Tagged , , , | Leave a comment

“Still at war with customs” — yet another letter from the HZA

To be honest, I’m not looking forward to opening this letter…

HZA-2015-06-02

…but there is no way around it.

Continue reading

Posted in Electronics. | Tagged , , , , , , , , , | 4 Comments

Small project #14 — KIS-3R33S breakout — with citrus smell !

Not “pining for the fjords”, but pining for the boards!

IMGP12057

Continue reading

Posted in Electronics. | Tagged , , , | Leave a comment

Small project #13 — AVR-ISP level shifter (VCC+I/O)

IMGP12037

Bought a cheap AVR-ISP programmer on Ebay, and you find out that while it does provide 3.3V, it is VCC-only & your device is NOT 5V tolerant on its I/O pins. BUMMER!

This little board fixes just that issue.

All relevant I/O lines (10pin / 6pin ISP) are level-shifted, target power can be selected between 5V (provided by the 5V-only programmer), “unpowered”, and 3.3V (provided by an on-board regulator).

That’s all & it works :-)

Design files and so forth can be found here.

Posted in Electronics. | Tagged , , , , , | Leave a comment

Small project #12 ⅔ — IKEA Samtid mood-light BT firmware

A user of the “new” version of the lamp has undertaken the heroic task of writing the Bluetooth code for controlling it!

Here’s a sneak-peak:

Posted in Electronics. | Tagged , , , , , , , , , , | Leave a comment

The “at war with customs” saga continues

Today, a Sunday, I discovered a letter in my mailbox.

A LETTER FROM CUSTOMS – >> MAIN OFFICE < <. I did not open it, as to not ruin the end of the weekend. Now it is Monday, and I'm going to open said letter right NOW. I have a gut feeling it will make me go "wide awake" within seconds... Continue reading

Posted in Electronics. | Tagged , , , , , , , , , | Leave a comment

Why is importing goods & customs such a pain in the ass?

no-LEDs

Continue reading

Posted in Electronics. | Tagged , , , , , | Leave a comment

Small project #12 ½ — IKEA Samtid mood-light-upgrade upgrade

Someone, I won’t mention any names here, practically coerced me into upgrading this little project a bit.

IMGP11386

Now there’s the option to add a bluetooth module (HC-05, JY-MCU “ZS-040”), which supports remote code upload, or a WiFi module (ESP8266-1) using a small adapter with integrated 3.3V regulator. The WiFi module requires quite a bit of current, so the on-board 3.3V regulator feeding the ATmega168P can’t handle that.

The bluetooth module should allow remote control from Android phones, the WiFi module should allow remote control using a web browser. All of this will be quite “interesting”, as coding applications is not what I usually do.

Continue reading

Posted in Arduino. | Tagged , , , , , , , | Leave a comment

Spontaneous LED bulb teardown — Filamented LED light bulb

I finally was in the mood to tear down one of these filamented LED bulbs.

IMGP11570

Continue reading

Posted in Electronics. | Tagged , , , , | Leave a comment

No more SATAsfaction — DIE you friggin cable

IMGP11436

For some time now I’ve had issues with SATA bus-errors once in a while. The latest occurrence was a few days ago, a day after I had made a full backup.

Continue reading

Posted in Computer / Server | Tagged , , | Leave a comment

Partial solar eclipse 2015 — very bad photos

I was kinda surprised when I got the info that TODAY a partial solar eclipse was going to happen.

IMGP11363

https://en.wikipedia.org/wiki/Solar_eclipse_of_March_20,_2015

Continue reading

Posted in The Dump. | Tagged , | Leave a comment

Spontaneous LED bulb teardown — IKEA 200lm candle #2

Not too long ago one of these darn IKEA LED lamps (200lm, 4.3W) broke down after very mild usage. Well… it has happened again!

When I went into my bathroom one or two hours ago, I thought I was going blind, everything was so dark. But it was the friggin’ lamp…

IMGP11317

Continue reading

Posted in Electronics. | Tagged , , , , , , | 6 Comments

Pogo pins — Get bent!

IMGP11092

Continue reading

Posted in Electronics. | Tagged , , , | Leave a comment