Tag Archives: PWM

Small project #6 — LED-strip controller

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MBI5030 starter board — build instructions

Now that the ‘customs-guys’ have finally released the LED-driver ICs, I can finish this project. 4 Weeks is a looooong time for ‘air-mail’. If you’re thinking about 100% hand-assembly, start with the LEDs first! Then add all the other small … Continue reading

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Akafugu LED candle — custom PWM firmware

Random candle-imitating flicker is a good start, but if we can use PWM as well… MAKE IT SO!

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Small project #3 — IR controlled MOSFET with PWM

Want one? Check out tindie.com This little thing is a variation of a previous project, but now with a majority of the parts in SMD packages. Needles to say it is also a lot smaller. The 2nd biggest difference is … Continue reading

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Small project #2 — MBI5030 starter board

Want one? Check out tindie.com. Macroblock MBI5030, 16-ch constant current LED driver with PWM, SPI-like interface, requires external grayscale clock. Known-good source: Kingelectronics, latest datasheets.

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RGB LED Ring V2 + ShiftPWM — super smooth color fading

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PWM again…

What to do if you favourite microcontroller doesn’t have enough hardware PWM pins? Software driven PWM of course. There many absolutely dumb ways to do it, and I’ve probably tested all of these. They can be classified as “brute force”. … Continue reading

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ATtiny 2313 + MBI5168 + 3W LED

Towards re-illuminating my kitchen workspace…

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RGB LED Ring — now available as DIY SMD kit !

The RGB LED Ring is available as a DIY SMD kit! Honestly, ignore the next two paragraphs :-) Well as of next Monday 18:00 CET to be honest (May 17th 2010). I’ve already added it to zen-cart, but it’s still … Continue reading

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RGB LED Toy — It works

Well… sort of. I finally got the PCBs from sparkfun! Almost 6 weeks, 9 days only for the “air mail” letter to get to me. Maybe my “dear friends” at the customs office were “busy” again. Unfortunately my request to … Continue reading

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RGB LED Toy — first order at BatchPCB

For quite some time I have 19 SMD RGB LEDs sitting in one of my electronics boxes. It used to be 20, but I’ve ruined one while trying to solder it to perfboard. They are 3 single LEDs put into … Continue reading

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IKEA SAMTID modification — part 2

Not having the right tools is such a pain. The modification I’m planning to do requires cutting 72 round 35mm holes into the white plastic foil that forms the Ikea SAMTID’s “head”. I tried to do that with a scalpel, … Continue reading

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IKEA SAMTID modification — part 1

I have 3 Ikea Samtid lamps. They’re affordable, useful and the design is timeless. One is in my living room and started to bore me. That has to change. As the lamp can be dismantled very easily it’s begging for … Continue reading

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Expli.de – electronics competition — my my ;-)

I’m happily awaiting the prize ;-) Now I’ll finally be able to learn to work with AVRs “the right way” (LOL). For links to the other awarded projects, just click here. “myAVR MK2 USB PLUS” development KIT – kindly sponsored … Continue reading

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128 = 64 x 2 — Extending to larger matrix displays

I haven’t had the nerve to test if my 8×8 PWM code could cope with a double sized matrix, but it turns out someone else has already had fun doing that. Have a look at dirk’s blog for more information. … Continue reading

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Using a standard Arduino to program V3 Matrix boards

A comment by Andy reminded me of the fact that a standard Arduino (non SMD types) comes with the FTDI chip and therefore can be used as a USB to TTL serial programmer too :-) To make it work you … Continue reading

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V3 prototypes for sale

Hi, I need to get rid of my V3 prototypes ! I’ve got exactly 3 (all gone) fully assembled and tested boards + RGB LED matrix. So if anybody wants them, “The early bird catches the worm”. I’d be happy … Continue reading

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Experimenting with the PORTC/D connectors on V3 boards: I²C

First let’s have a look at the pinout of the connectors labeled as PORTC and PORTD on the V3 boards. “PORTC” : PIN NAME FUNCTION ARDUINO PIN ARDUINO PIN 1 PC0 ADC0 analog IN 0 digital IN/OUT 14 2 PC1 … Continue reading

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8×8 RGB Matrix V3 + KICAD + SMD — part 2

Lost in some office, surrounded by clueless clerks, and low on patience… This is my adaption of the famous tag line of Army of Darkness: “Lost in time, surrounded by evil, and low on gas…”, which describes what I’ve been … Continue reading

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8×8 RGB Matrix V3 + KICAD + SMD — part 1

Now that I’ve started to work with KICAD, I’ve made the transistion to SMD parts and finally got my switch back. I hade to remove it in V2 as the DIP parts took too much space. The quartz is back … Continue reading

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