DiyMaker
Do it your self projects
Realtime Arduino A/D Channel Graph plotting
May 10th
Simple way to plot the realtime graph on your monitor from arduino A/D channel using processing. This example we’re using potentiometer to changing voltage level of A/D channel on Arduino board.
Simple 4 LEDs Blink with Arduino
May 8th
Simple 4 LEDs Blink line runing, simple using digitalWrite and delay functions. adjust LEDs speed by change delay time as you like More >
Simple way to drive relay with most micro-controller signal
May 6th
This circuit diagram showing how to drive 5V relay with simple component using 2N2222 or PN2222 transistor 1k resistor and 1N4001 diode. working with 5V TTL signal from most popular micro-controller like Arduino, AVR, PIC, MCS-8051 etc.
MAX3232 3.3V RS-232 to UART Level Convertor
May 6th
Convert RS-232 to TTL 3.3V with DB9 connector circuit diagram, for Serial communication between computer with micro-controller that requiring 3.3V TTL. The MAX3232 IC can be operate up to 250kbps.
L298 with PC817 Opto 5-50V 2A/Channel Dual Full H-bridge DC Motor Drive
May 6th
This circuit diagram was designed for split 2 supply source between devices and motor drive unit, The great strength is prevent the noise that always generate from motors when it running, That could be interfere other high noise sensitive devices. The idea was using PC817 Opto-isolator to definitely split ground and supply source. using this trick you can say goodbye form noise that come from motors drive unit, but you need independent supply source for motors.
Multi Function Chinese Military Shovel
May 6th
Imagine how could your shovel doing more than dinging soil ? Try to watch this video, Chinese military show their multi function shovel, it could done many think like chop the tree, saw, can opener and more.
Connect Xbee to Arduino with 3.3-5V Voltage Divider
May 5th
As know as Xbee device not accepted voltage over 3.3V, much more that it will be damaged. The simple way to connect with Arduino or other micro-controller which requiring 5V TTL for UART or Serial communication by using 2 resistors for make voltage divider circuit to adjust signal voltage between two devices. On the schematic above slowing how to wiring together.
MAX232 RS-232 to TTL Serial Communication Level Convertor
May 5th
MAX232 is very popular used for convert voltage level between RS-232 (COM Port) and TTL on serial communication protocol. Because the computer signal were +- 3-15V and TTL level require 0-5V signals, you can’t directly connect between two devices that will curse your TTL devices like micro-controller damaged. Using this circuit to step voltage down as mostly micro-controllers on UART port accepted the TTL 0-5V level.
** Note some of modern micro-controller require 0-3.3V level, Of course you need only make change the supply voltage to 3.3V and it finally done.
Download Eagle schematic files for your further PCB design.
Wyvern Quadrotor Helicopter
May 4th
The Quadcopter from Wyver blog still in develop with amazing work, They using PID algorithm to control their flying quadcopter and sharing a lot of information like IMU, Wireless Control, Mechanic Design and much more including videos, visit their blog.
