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atmega328 -> optocoupler -> mosfet driver -> mosfet doesn't work well at low duty cycles
I have here:   - atmega328p running at 3.3V/8 MHz internal oscillator - hardware pwm out at 16 bits / 122 Hz (no prescaler) - optocoupler PS2501-1 - mosfet driver ir4427 -...
Saturday, 18 October 2014 - 10:16
SPI /SS acts as INPUT configured as OUTPUT using DebugWire
Continueing my quest to get the enc28j60 working on the atmega328p.. Yesterday I found some weirdness on the SPI pins (MOSI idle high) that didn't appear to be a problem really....
Friday, 31 January 2014 - 10:27
Simple(?) question about SPI on ATmega
I am new to the SPI-on-atmega (have been using USI on tiny's before). I have a very simple question, with probably a less simple answer (can't find it...) I am debugging a SPI...
Thursday, 30 January 2014 - 18:08
TVS on I2C SDA doesn't work
I have an "interesting" problem. I hope I can explain my setup in a way it's understandable :wink: I have: 1- ELV USB to I2C converter in the house, connected to computer (USB)...
Monday, 4 November 2013 - 13:03
reading bar code from the bottom of model train
This is a project I probably have time for in a few years time, but I kind of like to already have some thoughts about it ;-) The project will be a model train + track (of course...
Wednesday, 7 August 2013 - 19:43
crash/reset when using debouncing cap on pcint port
This is using an attiny861a but I don't think it's limited to this model. It has, a.o, three ports used for counting two of them on port A, which have no problems whatsoever. The...
Monday, 5 August 2013 - 08:38
Issue with resolution of "software" PWM on attiny
Hi Guys, I am making something for pwm driven strings of leds, I am now testing with a simple led per port, so no power issues. The attiny (861a at the moment, but I will be using...
Tuesday, 7 August 2012 - 13:52
What are _you_ using avr's for?
Just very curious to know what people are using their mcu's for! And which device's you're using as well. I use them for home automation, catching strobes from the "kWh led flash...
Thursday, 2 August 2012 - 13:42
i2c/twi slave on usi using Don Blake's code
Hi Guys, At the moment I am working on a little project that targets on using attiny's for led lighting control (on/off/pwm dimming/etc) using twi/i2c. The final version will be...
Monday, 23 July 2012 - 10:04
LDR on input pin to capture light strobe
Hi guys, I want to do the following. My energy usage meter (don't know the exact correct wording) strobes a pulse every single Wh passed through. I already catch that strobe using...
Saturday, 21 July 2012 - 20:23
Dragon Rider 500 and attiny[248]61
Hi there, yes it's me again ;-) Can anyone confirm if the attiny261/461/861's are usable with the Dragon Rider 500 (Ecrostech). The only 20-pin attiny they mention is the...
Friday, 13 July 2012 - 11:43
Functional differences between attiny series
Hi All, I am currently in the process of deciding what attiny I am going to use as "default" for various projects (I'd like to stick to one type as much as possible). In the race...
Thursday, 12 July 2012 - 17:32

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