Recent Comments
- Spitzenpfeil on Sleep is vital
- robert on PT4115 LED-Square
- abies on PT4115 LED-Square
- robert on ERSA I-Con Nano — A pico review
- Ubi de Feo on ERSA I-Con Nano — A pico review
Archives
Tags
64-pixels adapter AVR bulb customs DSO failure by design fireworks firmware good old days hack happy new year hardware IKEA import lamp lecroy LED light lighting linux MBI5168 modding open source opensuse oscilloscope PCB power supply prototype PWM rant remote RGB RoHS Samtid Seeedstudio SMD soldering teardown trigger upgrade WaveAce 224 weller WS2812B youyueCategories
- Computer / Server (21)
- Dear Diary. (13)
- DIY. (12)
- Electronics. (192)
- Arduino. (44)
- Fix me. (13)
- Soldering & PCBs. (39)
- Software. (11)
- Something Completely Different (10)
- The Dump. (28)
Blogroll
KiCad
Links
My 2µF
Meta
Tag Archives: light
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:
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. 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 … Continue reading
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 … Continue reading
Spontaneous LED bulb teardown — IKEA 200lm candle
It has happened again! After about 2 years of very mild usage (bathroom mirror light), an average on-time of about 5-10 minutes per day, yet another of my many IKEA LED lamps has died. This time it was a 4.3W … Continue reading
Small project #12 — IKEA Samtid mood-light upgrade
This upgrade is based on the loved-by-everybody WS2812B intelligent RGB LED and works just fine with Adafruit’s NeoPixel library. The concept is – once again – rather simple. Whack a lot of WS2812B RGB LEDs onto a small board, add … Continue reading
Small project #10 — IKEA Samtid reading-light upgrade
Yet another reincarnation of a PT4115 based LED lamp. This time I chose to add a micro-controller to the mix. No, not an ATtiny13 but an ATtiny45, as it contains a much desired feature for this job: high frequency PWM … Continue reading
Spontaneous LED bulb teardown — IKEA ledare 400lm
I bought this LED bulb about 21 months ago for €11.99. I liked it!
Posted in Electronics.
Tagged bulb, IKEA, LED, ledare, light, overheating, teardown, Texas Instruments
5 Comments
PT4115 LED module – upgraded to Nichia NT2x757D LEDs
First the old version, using the best small LEDs I could get hold of at that time: Nichia NSSL157 and NSSW157 types driven at about 100mA.
Small project #7 — USB powered inspection light
Quite often I run into the problem of getting light to where I need it when inspecting SMD solder joints. The ring-light I built some time ago provides a lot of light, but is too large to get close to … Continue reading
Posted in Electronics.
Tagged light, USB
Comments Off on Small project #7 — USB powered inspection light
Small project #5 — Pentax s5z LED ring for macro shots
My trusty Pentax S5z still works reliably. I’ve had it for 8 years now. It doesn’t shoot HD videos and it requires a couple of replacement batteries now and then, but it makes quite nice macro shots (with the help … Continue reading
Posted in Electronics.
Tagged AVR, camera, digital, illumination, LED, light, macro, Pentax, S5z
Comments Off on Small project #5 — Pentax s5z LED ring for macro shots
Riding a bicycle at night — Most bikers are braindead…
… or will be ! It was at night, it was raining, ice rain at times, the roads were covered with slippery leaves. I met a lot of bikers – some of them had their lights on. I was still … Continue reading
Seeing by not seeing
What fun reading can be. Get yourself a few good books, lots of tea, some chocolate and read! I must have read “Feet of Clay” by Terry Pratchett numerous times, but it seems I hadn’t payed this quote the necessary … Continue reading
Posted in The Dump.
Tagged book, discworld, feet of clay, humour, light, literature, perception, reading, terry pratchett, the truth
Comments Off on Seeing by not seeing