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Frequency Shift Keying (FSK) Demodulator – Circuit Schematic
Frequency Shift Keying (FSK) Demodulator
Frequency shifting keying technique is used to transmit binary data. The circuit diagram with description fsk demodulator used 565 IC for frequency shift keying...
infrared IR Arduino Transmit n Receive – Circuit Schematic
infrared IR Arduino Transmit n Receive
Using digital IR Receiver Module and digital IR Transmitter Module connected each with different Arduino Uno. How can I transmit data like "1234" to the receive...
infrared Help Troubleshooting This Circuit – Circuit Schematic
infrared Help Troubleshooting This Circuit
This is a follow up to an earlier post I made here. Below is the relevant portion of the schematic for this issue (stuff to the left of Y1 is in original post i...
IR Demodulator – Circuit Schematic
IR Demodulator
It takes a 32. 768 kHz IR input and outputs a logic low when the input is present. I see 3 distinct stages. everything up to U1A, everything between U1A and Q3 ...
learning How does this SIM card reader circuit work – Circuit Schematic
learning How does this SIM card reader circuit work
The circuit for a SIM card reader is shown here. The circuit uses a CMOS hex inverter and other simple components; yet, not only does it work but it can also co...
One-Wire Serial Bus Carries Isolated Power And Data – Circuit Schematic
One-Wire Serial Bus Carries Isolated Power And Data
Medical and industrial applications often require galvanic isolation of 2500 V ac or higher for the safety of patients and equipment operators. The isolation ba...
Simple Circuit Communicates Over Low-Voltage Power Lines – Circuit Schematic
Simple Circuit Communicates Over Low-Voltage Power Lines
This circuit solves the problem of sending data over a cable with no free conductors. The data is OOK (on-off keying) modulated and superimposed on a high-frequ...
The designs and realizing of the electric current based on CAN bus line voltage transducer – Circuit Schematic
The designs and realizing of the electric current based on CAN bus line voltage transducer
Field bus technology and intelligent instrument technology are automatic and controlling the trade to develop two major most quick technology at present. In the...
SPI bus line tested and analyzed – Circuit Schematic
SPI bus line tested and analyzed
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Duplexing wireless series transmission scheme of the one-chip computer – Circuit Schematic
Duplexing wireless series transmission scheme of the one-chip computer
We know, the maximum coverage of RSR232 serial port Transport Protocol is 10M, and the wire transmission, this needs remote transmission control to bring very g...
1-Wire Two-way level converter unit (from 1.8V to 5V) Reference design – Circuit Schematic
1-Wire Two-way level converter unit (from 1.8V to 5V) Reference design
The designer requires 1 Wire host computer IO framework of adopting the drain and opening a way, work in 1. 8V. Majority 1 Wire is unable to work in 1. 8V from ...
Testing a EM-406A GPS module – Circuit Schematic
Testing a EM-406A GPS module
Some months ago I ordered a EM-406 GPS module from Sparkfun. I intended to explore geotagging and this module seemed to be a simple one to use : integrated ante...
RF Wireless Data Transfer communication Circuit diagram – Circuit Schematic
RF Wireless Data Transfer communication Circuit diagram
RF Wireless Data Transfer communication Circuit diagram.we implemented a wireless communication interface one point to another by means of RF technology....
Transmitting audio over laser or LED – Circuit Schematic
Transmitting audio over laser or LED
Want to send your audio information via a light wave across the room I built this simple circuit with some modifications that transmits an audio signal via ligh...
Nikon CLS Slave Flash Trigger – Circuit Schematic
Nikon CLS Slave Flash Trigger
This small project is a slave flash, which can trigger up to 4 camera flashes (non-TTL mode). It is meant for use with the Nikon CLS system, although it can pro...
Electronic Spy Bug Circuit – Circuit Schematic
Electronic Spy Bug Circuit
Here we`ll discuss how to make an electronic spy bug circuit using two methods, one that consists of wire link from the transmitter to the receiver, and the oth...
simple bus level-shift / I2C mosfet level converter Fairchild BSS138 – Circuit Schematic
simple bus level-shift / I2C mosfet level converter Fairchild BSS138
While doing some background reading about the Philips I2C bus I came across an application note written by Herman Schutte (of Philips Semiconductors Systems Lab...
Lesson Plan for Modulated Laser Laboratory – Circuit Schematic
Lesson Plan for Modulated Laser Laboratory
Electromagnetic radiation is used in communication. You are more familiar with radiowaves, microwaves, and TV signals. Visible light is also electromagnetic rad...
Infrared Transmit and Receive – Circuit Schematic
Infrared Transmit and Receive
When ever I find an easy way to do something I just have to make a record of it. There are some projects where you might want to do something wireless with the ...
iOS interfacing Frequency Shift Keying (FSK) from Arduino – Circuit Schematic
iOS interfacing Frequency Shift Keying (FSK) from Arduino
So, it turns out that I`m probably not going to use the Hijack approach to getting serial data from my Mindflex into my iPhone.  This is mainly due to the fact...