Sleep modes and idle modes in general-purpose microcontrollers have allowed embedded processors to reduce real-time energy consumption and tackle many battery- and low-powered designs. However, as embedded systems become increasingly complex, it takes additional logic to implement a denser, more sophisticated micro core as well as the higher-end peripherals we expect to see today. As […]
8-bit MCUs That Can Operate Under 1.8 V Read More »
PoE – Power over Ethernet is already a common is already a common matter. With the Ag5200 module you too can use this functionality and eliminate a mains adapter. A thought to use an Ethernet cable even for a power supply is already known for many years. To use an existing data connection even for
Ag5200 module will provide energy to your devices Read More »
Introduction Infrared (IR) can be used for line-of-sight communications over low to moderate range. IR is nice because of the lack of interference (except for sun and compact fluroscent lights) and freedom from FCC regulation. The web site http://tthheessiiss.wordpress.com/2009/08/05/dirt-cheap-wireless/ (Jacob Sikker Remin, 2009) shows how to use a IR remote control receiver and IR LED
Infrared Communications for Atmel Mega644-1284 microcontrollers Read More »
I’m a fan of LEDs, lots of LEDs. So here’s a slightly less crass way of using LEDs for decorative purposes.While this is by no means a neat and polished solution, and probably not the first of its kind, however the pulse effect is as far as I have seen unique, and exactly what I
The TS3004 is a single-supply, timer IC fully specified to operate over a supply voltage range of 1.55V to 5.25V while consuming 1.9μA supply current. Requiring only a resistor to set the base output frequency (or output period) at 25kHz (or 40µs) with a 50% duty cycle, the TS3004 timer/oscillator is compact, easy-to-use, and versatile.
TYPICAL APPLICATION CIRCUIT Read More »
I wanted to make an easy and secure way to enter my garage. RFID was the best way to unlock my door, even with my hands full I can unlock the door and push it open! I built a simple circuit with a basic ATMega 168 arduino chip and a ID-20 RFID reader to control
Arduino RFID Door Lock Read More »
Programming microcontrollers isn’t hard. Building a programmer makes a great first electronics project. The goal of this instructable is to explain the simple ‘in circuit serial programming’ method used with Microchip PICs.Programming a big DIP (through hole) chip is easy. Pop it into a socketed programmer, burn, and return to the application circuit. Test and
Understanding ICSP for PIC Microcontrollers Read More »
I designed this circuit for the same reason that i designed the SMPS Boost regulator with the MCP1640 – To gain experience in SMPS technology. This time i use the high power LM2595 buck regulator.The circuit accepts any AC voltage from 8 to 45 Volts. This wide input voltage range is a remarkable feature! Plus,
SMPS with Battery Backup and NiMH Charger Read More »
If you’ve ever been designing a circuit and had to experiment with different values of caps and resistors, you probably didn’t like it much. It can be a hassle to switch out components over and over, trying to find the right combination to suit your needs. With RC filter circuits, it can be quite difficult
Build a Resistor/Capacitor Selection Box Read More »
If you have embarked upon electronics projects in the past, there is a good chance you have already encountered this common component and soldered into your circuit without second thought. Diodes are valuable in electronics and serve a variety of purposes, which will be highlighted in upcoming steps. First, what is a diode? A diode is a
