Tag Archives: AVR

YOUYUE 858D+ hotair station — Bugfix release V1.44

Posted on March 5, 2016 by robert

I’m glad to announce that the annoying watchdog issue has finally been fixed. It was a dumb error on my side, combined with a prevalence in some ATmega chips to have certain binary values in uninitialized registers after a cold … Continue reading →

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ISML + WiFi — ESP8266 finally tamed, but…

Posted on June 19, 2015 by robert

Preliminary testing of WiFi control using the ESP8266 module.

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

Posted on May 9, 2015 by robert

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 … Continue reading →

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Small project #8 — ATtiny13 DFN10 programming adapter

Posted on April 5, 2014 by robert

There are DFN10 / QFN10 test-sockets, but these things cost close to 100 bucks, which I’m not (yet?) willing to spend on this. If this should work, I would be able to add preprogrammed chips to some SMD DIY kits … Continue reading →

Posted in Soldering & PCBs. | Tagged , , , , | 8 Comments

The Pogo-Key — 1.27mm AVR ISP adapter take II

Posted on November 12, 2013 by robert

The key to successful AVR programming :-> The previous version of this adapter had a major disadvantage – assembly was a mess. You needed a jig, sticky tape… not good.

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WS2812B + ATmega168 breakout — a.k.a. RGB LED RING V3

Posted on October 19, 2013 by robert

No more software PWM, no more LED driver chips, just intelligent LED pixels. These things come with integrated controllers/drivers and support 24bit colors (8bit per R,G,B). This makes projects smaller and is much easier on the microcontroller, no more need … Continue reading →

Posted in Arduino. | Tagged , , , , | 5 Comments

Small project #6 — LED-strip controller

Posted on July 13, 2013 by robert
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Tiny PCBs vs. large ISP headers — Pogo-pins to the rescue

Posted on July 5, 2013 by robert

As of late I’ve been making smaller and smaller circuit boards, fighting for every mm² of space. The typical 6pin ISP connector used for programming a lot of the AVR micro-controllers has been getting in the way more and more.

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Akafugu LED candle — custom PWM firmware

Posted on May 9, 2013 by robert

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 #5 — Pentax s5z LED ring for macro shots

Posted on May 2, 2013 by robert

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 →

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Small project #4 — Serial Knob

Posted on February 17, 2013 by robert

Want one? Check out tindie.com.

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Small project #3 — IR controlled MOSFET with PWM

Posted on February 16, 2013 by robert

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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Arduino to go

Posted on May 19, 2012 by robert

I’m probably not the first one to do it, but it is still a very good idea. Especially when combined with a product like ‘Parted Magic‘. Ultimate usefulness. Save / restore / backup / image computers – AND – code … Continue reading →

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avrispmkII LUFA clone — avrdude + windows without headache

Posted on May 7, 2012 by robert

The added functionality proposed in this post will be included in one of the next releases of LUFA. Please always check the official release of this framework. If you use windows you currently have to recompile the firmware (based on … Continue reading →

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Adding IR remote control

Posted on March 20, 2012 by robert

Recently I bought a small IR remote control + matching (38kHz) demodulating receiver at Adafruit. I just couldn’t find such a small remote over here. As it turns out the remote uses the extended NEC data format, which is nicely … Continue reading →

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RGB LED Ring V2 — sequels don’t have to be bad

Posted on January 11, 2012 by robert
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Zombie Meerkat — The compulsory Halloween project

Posted on October 22, 2011 by robert

2x red LEDs, 1x RGB LED, 1x ATtiny24, 1x MBI5168, 1x 470R potentiometer, 2x 270R, 1x 10k, 1x 294R resistors, perfboard, wire, solder and a lot of time. The victim: a meerkat sculpture I wanted to ‘deal with’ last year … Continue reading →

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Mental illness in microcontrollers — or in the programmer ?

Posted on July 11, 2011 by robert

A while ago I thought it was time to re-implement my clumsy attempt to have some sort of communication between 3 microcontroller boards. It is half-duplex only, so that can’t be hard, can it? As the ATtiny24s don’t have a … Continue reading →

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Bleep Labs Nebulophone — Chiptunes

Posted on July 10, 2011 by robert

First a note: If you want to use a standard headphone, you’ll probably go deaf. You need something with a volume knob! You’ll also most likely need an adapter from 6.3mm to 3.5mm, and get one that can handle “6.3mm … Continue reading →

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openSUSE avr-gcc packages — please test

Posted on June 13, 2011 by robert

A lot of people are making an effort to provide up-to-date avr-gcc packages for openSUSE to support new devices and fix known errors. Please test these packages and report your findings / errors. Either directly to bugzilla or to this … Continue reading →

Posted in Electronics., Software. | Tagged , , , | 3 Comments