EZdenki.com

Welcome to ezdenki.com, a blog of Mike's digital meanderings from Nagano, Japan.
ようこそ。ezdenki.comです。楽しい電気プロジェクトがあります。まだすべては英語だけですが、サイトを見てください！

Getting 5 V SD-Card Readers to work on 5 V Arduinos

Having trouble getting your (supposedly) 5 V SD-Card reader module working with your 5 V Arduino? Believe it or not, it's possible! Click here to find out how!

Notes on using avrdude.

Here are some notes on getting avrdude to work.

H-Bridge Light Timer to Drive Reverse-Parallel String of LEDs.

I wanted to add a timer to this string of reverse-parallel LEDs Here's the circuit to do it.

Signal Generator using AD9850 SSD Module, Rotary Encoder, and LCD Display

I got one of those inexpensive AD9850 DDS modules from eBay and had a go at building a simple controller for it. I wanted to adjust the frequency from 0 to 60 MHz only using a rotary encoder with a push-switch. There have been a few iterations so far, based on different microcontrollers, including an Arduino Nano, and even an ATTiny2313. Details here!

The HC-SR04 Ultrasonic Sensor on a Tiny13

Here is a tutorial of sorts based on the popular and inexpensive HC-SR04 Ultrasonic Sensor running off of an Atmel ATTiny13 in AVR assembly language. From there it's a no-brainer to get it going on any of the Atmel AVR series microcontrollers. Check it out!

What? 14 Pips and 1 Button on 5 I/O Lines!?
Mike's Dual Digital Dice on a Tiny13!

Check out my Dual Digital Dice project based on the Atmel ATTiny13 and not much else!
This project was highlighted in hackaday.com!!