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Serial Cable for Casio Digital Cameras – Circuit Schematic
Serial Cable for Casio Digital Cameras
I built this cable for my Casio QV-200 digital camera, it should work for many Casio models. It`s basically a inverting buffer/converter to/from RS-232 voltage ...
Serial Cable for Casio Digital Cameras – Circuit Schematic
Serial Cable for Casio Digital Cameras
I built this cable for my Casio QV-200 digital camera, it should work for many Casio models. It`s basically a inverting buffer/converter to/from RS-232 voltage ...
Homebuilt RS232 LCD Interface – Circuit Schematic
Homebuilt RS232 LCD Interface
There is enough of poorly constructed RS232 alike TTL level interfaces (+5volt) , this one generates it`s own +/- 10..11volts as RS232 specs. require , and is ...
Homebuilt RS232 LCD Interface – Circuit Schematic
Homebuilt RS232 LCD Interface
There is enough of poorly constructed RS232 alike TTL level interfaces (+5volt) , this one generates it`s own +/- 10..11volts as RS232 specs. require , and is ...
40khz IR tester – Circuit Schematic
40khz IR tester
Use this circuit to test if the light coming from your 40khz IR emitter is really emitting the right frequency. The schematic says to use a GP1U5X ir module, bu...
40khz IR tester – Circuit Schematic
40khz IR tester
Use this circuit to test if the light coming from your 40khz IR emitter is really emitting the right frequency. The schematic says to use a GP1U5X ir module, bu...
Basic IR Detector/Emitter – Circuit Schematic
Basic IR Detector/Emitter
This is a very basic infrared detector/emitter circuit. One major downside of this circuit, is that ambient infrared light will interfere with its detecting obs...
Basic IR Detector/Emitter – Circuit Schematic
Basic IR Detector/Emitter
This is a very basic infrared detector/emitter circuit. One major downside of this circuit, is that ambient infrared light will interfere with its detecting obs...
A Low Cost 4Mbps IrDA Receiver – Circuit Schematic
A Low Cost 4Mbps IrDA Receiver
The LT1328, in the MS8 and SO-8 packages, contains all the necessary circuitry to convert current pulses from an external photodiode to a digital TTL output whi...
Circuit transmits ARINC 429 data – Circuit Schematic
Circuit transmits ARINC 429 data
The physical transmission medium for the 429 standard is 78Ω shielded, twisted-pair cable that uses a complementary, differential bipolar RZ (return-to-zero) w...
ATV repeater controllers – Circuit Schematic
ATV repeater controllers
This is an image Schematic. No Description available....
YUV(YCbCr) to RGB converter – Circuit Schematic
YUV(YCbCr) to RGB converter
Recently, most digital video equipments, such as video recorder, DVD player and TV game, have component video output. The component video signal is like RGB vid...
RS232 Expander – Circuit Schematic
RS232 Expander
I got a problem with my notebook, because it has only COM1. My programmer board, Easy-Downloader must use serial port and the application board also needs to co...
RS-232/485 converter has automatic flow control – Circuit Schematic
RS-232/485 converter has automatic flow control
The circuit in Figure 1 is an RS-232/485 converter that uses the transmitted signal itself to control the flow. The circuit uses MAX232 and MAX483 interface cir...
Blank Frank`s RS232 - Lowe HF-225 interface – Circuit Schematic
Blank Frank`s RS232 - Lowe HF-225 interface
If you have access to a Lowe HF-225 shortwave receiver, then you might be interested in this page. If you don`t, then you`d probably be better off leaving now. ...
Simple RS232C Level Converter using Transistors – Circuit Schematic
Simple RS232C Level Converter using Transistors
There`re many, who built the Easy Programmer or C-52 Evaluation Board, asking for the RS232C level converter chip, DS275. Many have changed to MAX232 instead, b...
RS232C Level Converter – Circuit Schematic
RS232C Level Converter
A standard serial interfacing for PC, RS232C, requires negative logic, i.e., logic `1` is -3V to -12V and logic `0` is +3V to +12V. To convert a TTL logic, say,...
Yet Another ICOM CI-V Interface – Circuit Schematic
Yet Another ICOM CI-V Interface
This page describes my home-built ICOM CI-V interface. In order to connect most all ICOM radios to a computer, an additional interface is required. The interfac...
ESD Testing for RS232 Interface Circuits – Circuit Schematic
ESD Testing for RS232 Interface Circuits
The machine model, commonly used for ESD testing in Japan, is a more severe ESD test. This model simulates metallic contact between the device under test and a ...
Single Supply RS232 Interface for Bipolar AD converters – Circuit Schematic
Single Supply RS232 Interface for Bipolar AD converters
The LT®1180 RS232 transceiver includes a charge pump which produces low ripple supplies with suffi - cient surplus current to drive a CMOS A to D converter and...