Essen Electronics

  A02YYUW Waterproof Ultrasonic Sensor is an easy-to-use commercial-grade sensor module. This module determines the distance to a target by measuring the time lapse between sending and receiving the ultrasonic pulse. The A02YYUW sensor features a waterproof and dustproof closed separated probe that is suitable for harsh and moist environments. All the signal processing units are integrated inside the module and the distance value is directly obtained through the Asynchronous Serial Interface. The A02YYUW communicates with the upper-host or other MCU with a 9600bit/s band rate that greatly shortens the developing cycles. Specifications 3.3V-5V operating voltage range <8mA average current 3cm blind zone distance 3cm-450cm detecting range (flat object) 100ms response time -15°C~60°C operating temperature rang...

  With a waterproof sealed emitter. This sensor is suitable for outdoor applications such as car reversing sensors, security alarms, industrial inspection, etc Working voltage:5V, Static current:5mA, Working current: 40mA Working range: 25cm-4M, Working frequency: 40KHZ, Detecting angle: 70 degree Application: Horizontal distance messurement,Obstacle avoidance, automatic control, Traffic control, Security, industrial control      Specification Working voltage: DC 5V Static working current: 5mA Working current: 30mA Acoustic emission frequency:40KHz Wiring:+5V(positive); Trig(control); 　　Echo(receive); 　　GND(cathode) Connection with arduino: 5V:5V Suply Trig:D12 Echo:D13 GND:GND

  The HC-SR04 is an affordable and easy to use distance measuring sensor which has a range from 2cm to 400cm (about an inch to 13 feet). The sensor is composed of two ultrasonic transducers. One is transmitter which outputs ultrasonic sound pulses and the other is receiver which listens for reflected waves. It’s basically a SONAR which is used in submarines for detecting underwater objects. Here are its main specifications: Operating Voltage 5V DC Operating Current 15mA Operating Frequency 40KHz Min Range 2cm / 1 inch Max Range 400cm / 13 feet Accuracy 3mm Measuring Angle <15° Dimension 45 x 20 x 15mm The sensor has 4 pins. VCC and GND go to 5V and GND pins on the Arduino, and the Trig and Echo go to any digital Ard...

 RTC module  is suitable for a wide range of projects, including clocks, timers, and alarms, as well as data logging and time stamping. This module is built around the highly capable DS1307 RTC chip and the AT24C32 EEPROM, At the heart of the module is a low-cost, extremely accurate RTC chip from Maxim — the DS1307. It handles all timekeeping functions and communicates with the microcontroller over I2C. The DS1307 can keep track of seconds, minutes, hours, days, dates, months, and years. It can work in either a 12-hour or 24-hour format and has an AM/PM indicator. For months with fewer than 31 days, it automatically adjusts the date at the end of the month, including leap year corrections (valid up to 2100). Another interesting feature of the DS1307 is the SQW pin, which can be programmed to output one of four square-wave frequencies: 1Hz, 4kHz, 8kHz, or 32kHz. The DS1307 IC incorporates a battery input for maintaining accurate timekeeping even when the device’...

 

  Today i made this Test instrument using Arduino ..very very usefull in find out shorted electronic components in mainboards.. espcially when lot of ICs sharing same power. if one componet get short the whole track shows 0 resistance when testing with normal multimeter.. its difficult to find which one is the dead rat.  Normally we need to take out each suspected component from board and need to test until we got the defective one.. its tedious job and damage the board.    Another way inject current to the circuit test the heat.. its not safe.   Here is the need of this device. When we trace the power line with this probe.. it gives high pitch audio tone when the probe near the particular shorted component.. It can test micro ohm resistance beyond normal meter range Automatically shut to save battery .if we forget to switch of the tester Auto calibration range. Portable The tester voltage and current safe to testing any components . On board testable...

working in 24 V DC using Buck converter for high efficiency  Used 2-16 blue /white LCD Display with back light micro controller based circuit. 4 relays (24V /10A each)used for Output control . microcontroller outputs are opto isolated from relays for additional protection sensors for temperature /pressure are 4-20 mA (1-5V) range type Can be set desired Temperature /Pressure using UP DOWN Black push buttons in the set mode then press the Green OK button the device goes to monitor mode. The displayed control range is 0 -100 for 4-20 mA input. when the temperature /pressure goes below the preset value then 24 volt available at appropriate output this can used to switch a contactor on ,hence a heater or compressor can be switch on. when the temperature /pressure reach 5 point less than the preset value,24 volt available at its alarm out put to drive a buzzer and it only off when the temperature and pressure goes10 point below the preset value when the temperature or pressure reach the...

  This project is a 2 Digit Counter. uses arduino and 2 seven segment LED displays we can set desired number of counts first. and each pressing of a count button the number showing in the display start counting down  instead of count button we can use any sensor to count "n" number of incidents, when it reach 0 a beep or an out put voltage trigger some relays or LED,indicate the count is done.

  Some time when we forget to switch off the submersible pump then the upper tank water will be overflow until we get noticed. or some time in a middle of a bath the tank water get empty . and every day we need to switch  and carefully switch off the motor after the tank get filled  even we dont know how much water in the tank. so I design this Automatic water level controller I use Arduino nano in this project and wright a program and upload in it. Use a ultra sonic sensor for sensing water level . i fix the sensor in the lid of water tank and connect the control box with a 4 core cable. the control board has arduino nano and color LED 's for the water level the red led for indicating water level below 10% amber LED indicate water above 25% yellow is above 50% green is above 75 % when the water level goes below 10% the the ultra sonic sensor sense that level and arduino code check the main voltage. if it normal   decide to switch on the pump through a relay for a se...

 This Arduino based mini Traffic Light controller model to use in a driving school to train the students. so I make this projects for them. It simulate real traffic light sequence.

I make this micro controller based timer as a part of shooter training Project.we can select and set time for a period of 0 t0 99 seconds or minutes. when the the timer is start.the 2 seven segment display start counting down .when it reach 0 an out put voltage activate buzzer or relay .so any electrical device can be switched on or off after a time delay   ¶ Microcontroller based design for greater accuracy and control ¶ Power supply input 12 VDC 200 mA ¶ Two 7  segments Display to display time ¶ Single key start and dual key alarm time set function ¶ Power and Relay-On LED indicator ¶ Terminal connector for connecting power supply input and relay output to the PCB ¶ Onboard regulator for regulated supply ¶ Crystal resonator based design for better accuracy there three buttons Up Down and set button