rs 232 - Interfaces de comunicaciones

230 Electrónica Digital T4 TEMPORIZADORES: OSCILADORES Y MONOSTABLES T4. 1. Comportamiento circuital de los condensadores T4. 2. Monostables T4. 3. Circuitos astables T4. 4. El [. . ]

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http://diec.cps.unizar.es/~tpollan/libro/Apuntes/digT4.pdf

Programmer for a lot of AVR microcontrollers such as ATtiny12,ATtiny15,AT90S1200(A),AT90S2313,ATtiny2313,AT90S2323,AT90S2333,AT90S2343,AT90S4414,AT90S4433,AT90S4434,AT90S8515,AT90S8535,ATmega83,ATmega103,ATmega161,ATmega163

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http://www.serasidis.gr/circuits/usbAvrProg/usbAvrProg.htm

Direction finder circuits, schematics or diagrams. Discovercircuits.com is your portal to free electronic circuits links. Copying content to your website is strictly prohibited!!!

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http://www.discovercircuits.com/D/direction2.htm

Capacitive touch switches work by measuring the change in capacitance of a PCB (printed- circuit-board) pattern depending on the placement of a user's finger over a sensing pad. Capacitive switches are becoming popular because they are less expensive than mechanical switches. Using the features of an Altera (www. altera.com) MAX IIZ CPLD (com- plex-programmable-logic device),.......

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https://www.edn.com/ContentEETimes/Documents/EDN/DI PDFs/5.29.08 DI.pdf

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https://www.circuitsathome.com/tag/pl2303

GPS-Based Frequency Reference Circuit Mods & Additions - The short term frequency stability of the GPS-Based Frequency Reference described in the March and April issues can be improved with some circuit changes, as described here. It's also quite easy to add an RS-232C serial output, so the NMEA data stream from the GPS receiver module can be fed out to a PC for other purposes. A simple modification to improve the short-term stability plus details on adding an RS-232 serial port - By Jim Rowe.......

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http://archive.siliconchip.com.au/cms/A_108798/article.html

STEVE EDN071025DI4133 FIGURE 1EXTERNAL PIN-LIMITED EMBEDDED SYST EMINPUT (SERIAL LINK) LCD232 MODULE 5V HD44780 CONNECTOR 52 4 147 6 31 V DD V SS A 1 2 89 B CLK IC 2 74AC164 C 1 100 nF Q A 3MSB LSB R 1 10k 14D7 Q B 413 D6 Q C 512 D5 Q D

https://m.eet.com/media/1131192/14329-figure_1.pdf

A hot-swap serial-interface circuit allows two computers to monitor all the traffic on an RS-232 port.

https://www.edn.com/design/integrated-circuit-design/4326675/Hot-swap-circuit-allows-two-computers-to-monitor-an-RS-232-channel

+12V +5V +5V +5V +5V +5V Title Size Document NumberRev Date:Sheet of0403- VA3TO Programmable Beacon Keyer B 0 1Monday, November 16, 2009 POWER IN 12VDC AVR ISP RS-232 Level Converter GND RS-232 DB-9 FEMALE RS-232 RXDRS-232 TXD SERIAL PROGRAMMING CABLE OPTIONALICSP HEADER Hugh Duff, VA3TO3-Pin Female 0.1" Header Ucontroller 3-Pin Male 0.1" Header C2 -.......

https://va3tocom.000webhostapp.com/Bcn_Sch3.PDF

I have received a couple emails from people looking for inexpensive DC to DC converters, which can convert 40v to 60v DC into say +5 or +12v.  Such input voltages are often found in new automotive and industrial applications with a typical DC voltage of 48 volts. It turns out that many, not all, but many, standard AC line operated power adapters, which use switch mode techniques, will indeed work great when supplied with DC instead of AC. The unit below works down to about 30v DC and delivers 5.......

http://www.discovercircuits.com/H-Corner/RS232-status indicator.htm

A Universal I/O Board With USB Interface - This hardware I/O board will let you drive a host of digital and analog I/O (input/outputs) via the USB interface on your laptop or desktop computer. Based on an Atmel Atmega32 microprocessor and not much else, it works on Windows, Linux and Macs. This easy-to-build board connects to a USB port on your laptop or desktop computer and will let you connect a host of digital and analog inputs/outputs. It works with Windows, Linux and Mac operating systems.......

http://archive.siliconchip.com.au/cms/A_111673/article.html

http://www.seattlerobotics.org/encoder/aug97/cable.html

https://softdigg.blogspot.com/2013/05/clarion-apa1100-audio-amplifier-wiring.html

https://www.circuitsathome.com/mcu/major-acmprolific-bug-fix-posted-on-github

http://www.cappels.org/dproj/dlmom/dlmom.html