Cheapest signal cleaner circuit
Here is the simple low noise filter circuit for any FSK signals that weak and have noise. This use few parts so easy and cheap. Fig 1: The schematic of this project As Figure 1 is the schematic...
View ArticleDigital logarithmic sweep signal generator circuit
This is a Digital logarithmic sweep signal generator circuit by use the average digital, It is designed to use together with the frequency generator by voltage controller. How it works From the circuit...
View ArticleOne button code Switch
The most code switch will be a key number 1 to 10 is good. But when I press a number key often until has track, making it possible to guess the code. This circuit use the normal door bell switch is the...
View ArticleDual RS232 port selector circuit
This is a Dual RS232 switch selector circuit to one computer that have one RS232 port into two ports for two computers. In circuit is simple and cheap without ICs so easy to build. Normally, we will...
View ArticleSimple 555 ICs tester circuit
Most IC-555 is used to generate frequency, and sometimes we need to know. Is it good or bad? But normal multimeter cannot check it. Thus, I make a simple 555 ICs tester circuit. Which is tested...
View ArticleAnalog To Digital Converter Circuit Using Simple Parts
Usually an analog to digital converter circuit or A/D that need to use the high accurate devices and and high difficult. But this circuit, The error of all devices does not affect the accuracy of the...
View ArticleThe CMOS current controlled oscillator circuits (CCO)
We can use a CMOS nand gate or inverter gate and two transistors into the current controlled oscillator circuit (CCO). In Figure 1 use two inverters are connected together as a astable multivibrator...
View ArticleRising-edge trigger R-S Flip Flop circuit
The normal R-S flip flop circuit include of two nade gate are connected together and when need to set or reset then feed the logic signal is “1” instead trigger and use inverter work instead. In Figure...
View ArticleSimple Crystal oscillator Circuit
This is simple crystal oscillators that provided square wave of 1MHz to 10MHz, Use an inverter gate IC and control frequencies with crystal. A oscillator or a frequency generator provide waveform out...
View ArticlePower outages prediction circuit
This circuit can be used to prevent a power failure. Example: Microcomputer systems. This circuit will send logic pulse “1″ shortly before the power goes out completely. To trigger the power outage...
View ArticleDigital to analog converter circuit for motor controller
Here is a digital to analog converter circuit for control DC motor speed. We control easily a motor to stop and rotate. If need to control it on linear. The post Digital to analog converter circuit for...
View ArticleLM8365 alarm digital clock for beginners
The digital clock circuit board using LM8365,alarm and relay control, alert 2 times in 24 hour,backup battery power outage. Show dates, months or seconds The post LM8365 alarm digital clock for...
View ArticleWhy use Microcontroller
Why use microcontroller. We can change the work easily. By changing the program working within the micro controller. Making it ease of design The post Why use Microcontroller appeared first on...
View ArticlePIC16F627A Datasheet PIC Microcontroller
This is PIC16F627A Datasheet as good PIC Microcontroller ICs, Work 2.0-5.5V,Running 0-20MHz,In-circuit serial programming,Program memory 1.75 Kbyte The post PIC16F627A Datasheet PIC Microcontroller...
View ArticlePIC microcontroller led flasher circuit using PIC16F627A
This is microcontroller led flasher circuit using PIC16F627A as first PIC microcontroller learning of mine son. it is basic for really beginner. Important issue,we have to make The PIC micro controller...
View ArticleMake a PIC Programmer Box case with My son’s LEGO
My son is learning the microcontroller. He told The PIC programmer Without Box. So maybe we will catch part of its circuit. It may be damaged He likes to play LEGO much. It created as the box case. For...
View ArticlePIC microcontroller 2 led flasher circuit using PIC16F627
Today, We will try the PIC microcontroller 2 led flasher circuit using PIC16F627. Because like this circuit Which we can set ON-OFF of both LEDs for easy, long and accurate. Note: I intend to teach his...
View ArticleDigital volume control circuit schematic
This is digital volume control circuit that Can be applied to the normal volume of a power amplifier. When press switch S1 adds up the volume and press switch S2 to reduce the volume down. How it works...
View ArticleFirst Arduino leaning Board
Many friends suggested that my son should learn to use Arduino micro controller before. So it is First Arduino UNO R3 Board R3 leaning Board of Chayapol. The Arduino is the concept characteristics...
View ArticleHow to use CH340G Arduino Nano 3.0 on mac osx
Today we try to use CH340G Arduino Nano 3.0 on Mac OSX. In the beginning it was a problem. But it can be easy to fix. We liked it, because small, very cheap, and it can be exactly the same as the...
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