Low power consumption Better Amperes display resolution while using low value drop resistor. Much smaller PCB size, only 5cm x 5cm. Still no SMD components. Easy calibration, only one voltage adjust and one ampere adjust preset, no voltage out detection. Voltage supplied by my 12Volt benchtop PSU(The resistor at output terminal is disconnected. The 10Ohm […]
Atmega8 based Voltmeter Ampmeter v2 Read More »
In playing around with DIY electronics, Pugs has developed enough confidence to share his knowledge with his juniors. So, in one such occasion, he decided to give a try to program a micro-controller, as part of the electronics hobby club. There have been many hobbyist micro-controllers, like 8051, PIC, AVR, … and an equivalent or
Micro-controller Programming on a Bread Board Read More »
Introduction Nokia5110 is a graphical display that can display text, images and various patterns. It has a resolution of 48×84 and comes with a backlight. It uses SPI communication to communicate with a microcontroller. Data and commands can be sent through microcontroller to the display to control the display output. It has 8 pins. For
Nokia5110 graphical display interfacing with AVR ATmega16/ATmega32 Read More »
Xbees are some of the most powerful wireless modules you can find and they’re also very easy to configure and use. The only thing is they cost about Rs.1000 to Rs.2500 depending on the range and other parameters. If you’re like me and only bought the modules without the breakout boards or forgot to buy
Configuring and using XBEE wireless modules Read More »
This is probably the simplest possible digital voltmeter with Atmel AVR microcontroller. The circuit is controlled by a microprocessor IO1 – Atmel AVR ATmega8 (ATmega8, ATmega8L), a program to download and configuration bits setting is below. (ATmega8 may seem too “big”, but was chosen because it is one of the most frequently used AVR and
The simplest digital voltmeter with AVR Read More »
Measure something: add a sensor to a microcontroller board that you have designed and read it. This week I decided to make ATMEGA 328 board. ATMEGA 328 Some of the Features of ATMEGA 328 are 1.8-5.5V operating range Up to 20MHz 32kB Flash program memory 1kB EEPROM 2kB Internal SRAM Two 8-bit Timer/Counters One 16-bit
Passive Infra red sensor also known as PIR sensors is capable of detecting motion or movement within a certain range. These type of sensors have wide range of applications in our daily life and it is essential to learn the interfacing method. This article is going to demonstrate the PIR motion sensor interface with AVR
PIR motion sensor interface with AVR-microcontroller ATMEGA32 Read More »
Many AVR microcontrollers are capable of doing Analogue to Digital Conversion. The ATmega168 has 6 ports (8 ports on the SMD packages) that can be used for analogue input. This tutorial shows you how. The circuit The Breadboard layout is based on the Atmega8 breadboard circuit which is described in Atmega8 breadboard circuit Part 1
Analogue to Digital Conversion on an ATmega168 Read More »
Recapitulation One thing I didn’t find clearly over the internet is how to make an Arduino Pro Mini bare bones, that is, from the scratch, and how to make one on the breadboard. This is really useful if you want to make a custom pcb/smd circuit, because you will be able to test your hardware
How to make an Arduino Pro Mini bare bones with Real-time Clock Read More »
Driving a shift register using an AVR chip’s built-in hardware is really quite easy. Most of their offerings have an SPI module, or Serial Peripheral Interface. A shift register is exactly that, a peripheral device that communicates via a serial line. All we need to do is hook up our connections and use a few
How to drive 595 shift registers with AVR hardware SPI Read More »
