MMC/SD/SDHC card library This project provides a general purpose library which implements read and write support for MMC, SD and SDHC memory cards. It includes low-level MMC, SD and SDHC read/write routines partition table support a simple FAT16/FAT32 read/write implementation The circuit The circuit which was mainly used during development consists of an Atmel AVR […]
MMC/SD/SDHC AVR Interface using ATMega8 microcontroller Read More »
An ATtiny12 controller as a timer and some switching circuitry turns the doorbell off for 10 hours at the same time each day. The string of resistors across the top of the board are series connected to make a 728 Ohm 2 watt resistor. The slide switch is used to switch the circuit between the
Door Chime Privacy Sentry using Attiny12 Read More »
Introduction The purpose of the project is to present a new approach on the design of security systems by using a touch sensitive device. Security is a permanent concern in a variety of environments ranging from physical access restriction in home and industrial settings to information security in digital systems. Numeric passwords, fingerprint recognition, and
Gesture Based Touchpad Security System Using Atmega644 Read More »
Introduction Security is important for everyone from our homes to places of work. You need to feel safe when you are sleeping at night. You might have important documents that you need to keep private. Sometimes you have property in your house that must be secured. Well, you need a good security system. This way
How to build alarm security system using motion sensor with PCB Prototyping using atmega Read More »
Description This project is a development of our ESP32-CAM Video Surveillance Robot project. Eventually we got a video surveillance pan & tilt camera that can be controlled with an iPhone through Internet Step 1: Parts List: ESP32-CAM x1 FT232RL FTDI Mini USB x1 – for uploading a code to the ESP32-CAM 18650 Battery Holder x1
ESP32-CAM Video Surveillance Smart Camera Using Atmega Read More »
While I was finalizing e-snowflake project, I imagined that single RGB 5050 LED would create nice rainbow effect if placed inside a ball like ping-pong. You can find plenty of such projects on the net, this one was heading to embed everything within ping-pong, battery included. The design challenge was to create PCB small enough to fit into ping-pong, design electronic on/off
Rainbow glowing ping pong Using ATTing 13 Read More »
The Swiss AVR Knife bundles a number of AVR programming projects together in a single convenient Altoids Gum Tin. Because of the flexibility afforded by microcontroller programming, it also provides a starting point for any number of projects based on LEDs and sound output. The SAK can contain as many programs as the 8K of memory permits and
Swiss AVR Knife using Microcontroller ATtiny84 Read More »
Step 1 The Circuit Step 2 Building the Circuit board Step 3 Soldering the Circuit board Step 4 Programming the Micro Step 5 Using the Candles To power the circuit, you need 4 batteries of 1.2V, AA or AAA size or 3 batteries of 1.5V (AA or AAA size). Using the blowout candles is easy. Of course you need a
DIY Electronic Birthday Blowout Candles Using Atmega Read More »
This project uses green surface-mount LED’s along with an AVR ATTiny45 microcontroller to simulate the behavior of fireflies in a jar. https://youtu.be/UeL0LC2IgpQ (note: the firefly behavior in this video has been greatly sped up in order to be easier to represent in a short film. The default behavior has significantly more variance in its brightness and delay
Jar of Fireflies using AVR ATTiny45 Microcontroller Read More »
When I ran across the Jar of Fireflies Instructable sometime this past summer, I knew I had to build it. Full credit to Keso for an excellent set of instructions! I wouldn’t have gotten to the point of developing the firefly behavior without such a solid base for building the hardware, as well as firmware to start it out with.
New Jar of Fireflies using atmega Read More »
