LC Meter Based on the AVR Microcontroller circuit

The following circuit diagram illustrates a very simple AVR microcontroller setup (source: unknown). It requires minimal components and is easy to construct on a general-purpose matrix PCB. PonyProg2000 software can be used to program the AVR microcontroller with this programmer....

AVR LCD Microcontrolled Oscilloscope

A few months ago as I was surfing on the net, I saw an oscilloscope based on PIC18F2550 microcontroller and a KS0108 controller based graphical LCD. That was Steven Cholewiak's web site. I had never seen before so amazing microcontroller-only...

AVR ISP Circuit Schematics

It is crucial to design the PCB layout correctly to enable seamless In-System Programming (ISP) of AVR microcontrollers. This guide addresses common issues encountered and provides typical AVR ISP circuit schematics. It focuses on Serial Programming, known as ISP, and...

Inductance Bridge

This bridge will measure inductances from approximately 1 to 30 at a test frequency of 5 mHz. A 365-pF AM-type tuning capacitor is utilized as a variable element. The circuit should be assembled within a metal enclosure. Calibration can be...

pc based digital ic tester

Check the following ICs: 7400, 7402, 7404, 7408, 7432, 7486. A Visual Basic program is utilized to display the results on the PC. The microcontroller AT89S52 receives the IC number from the PC, verifies the logic gates with the truth...

high voltage parallel programmer avr

AVR has two different programming modes called Parallel Programming Mode (Parallel Mode) and Serial Downloading Mode (ISP mode). In Parallel Mode, the programming is done using multiple data lines simultaneously, allowing for faster programming speeds. This mode is typically used...

Capacitance meter

The output voltage is proportional to the capacitance connected to pin 2 of the charge pump. The meter operates over a capacitance range of 0.1 to 0 µF with a set resistance of 111 kΩ. Within this capacitance range, the...

Solving the USB Only Chicken or Egg Problem

Numerous effective In-System Programming (ISP) designs are available for 8-bit AVR microcontrollers. However, many of these designs necessitate a pre-programmed microcontroller, presenting the "Chicken or Egg" dilemma: programming microcontrollers requires having one that is already programmed. While solutions utilizing Parallel...

Jet

The microcontroller is able to make about 7000 complete line-following decisions per second, which is almost 7 decisions per millimeter when the robot is going full speed. By upping the clock, unrolling loops, and removing my wireless debugging and extraneous...