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Audio Consulting Switzerland

Audio Consulting Switzerland

Specialists in very high quality audio, Designs Amplifiers, Preamplifier, Phono Preamplifier and R-evolution Turntable etc.

Adapting New Technologies into Classic Hi-Fi systems, without compromising on Decades of Audio tradition.

MITA The Mains Independant Tube Amplifier
SE battery tube amplifier

MITA The Mains Independant Tube Amplifier

Features

Stereo SE 15w / Channel, Three Silver Rock transformers per channel, Fully Lithium battery powered, All silver internal wiring, Veneer to customer’s request.

Interface ICL7135 Voltmeter to Atmel 89C52 or PC

This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port.

ICL7135 to Printer port Interface

The four Digit Drive outputs and four BCD outputs of the Multiplexed Display Driver of 7135, along with A-D status output which is also four, are routed to four input pins on printer port via three 74HCT373 Digital Switches. This is because we have less Input pins on Port and 4 are shared by making one 74HCT373 transparent and others High Impedance when PC takes a reading. So the three sets of four outputs of 7135 can be read sequentially.

74HCT139 U9A which is controlled by the PC program can select U3, U4 or U5 for sending data to 4 pins on printer port. Data sent on the eight output pins of printer port can be latched by U10B into U6. This eight outputs of U6 can drive relays or lamps.

See also – Milli Volt Source for Printer Port.

Serial Interface a 80C31 to ICL7135

uC Input and Output I/O is Keyboard and LCD when you build a Calculator or a Text/Morse Communicator. When you control a motor it is Drive/Speed and Direction for Motor and Tacho or Opto Counters for Feedback. In both cases you have Input and Output which is Logic or Analog which has to reach the CPU.

Getting the analog into the uC is done here with ICL7135, with a simple two wire serial interface. Here a Pair of CD4538 MMV is used to shape the pulse just right for uC data transfer,…

AT89C52 Parallel Interface to ICL7135

This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port.

Beginning Arduino – Mike Earthshine Electronics

Located in London, Earthshine Electronics is a source of parts and kits relate to Arduino. Other electronics or microcontroller needs also.

Earthshine Electronics

See on right is the DFRduino Duemilanove – 100% Arduino compatible clone. Compatible with Standard Arduino Software and Shields.
Beginning Arduino - Mike Earthshine Electronics
Beginning Arduino – Michael McRoberts

Digital Barograph made with SCP1000 & GLCD

Arduino Mega Project – Measurement and Data Logging. Digital Pressure Sensor and 128×64 Graphic LCD. Plots graph of current pressure, temperature variation with time.

This certainly is a good project for college students. You can also enhance it for multiple channels, mini thermal printer interface.

Stand alone remote data loggers must be able to take a Standard Thumb Drive for storing and easy retrieval of data. In urban areas a wireless internet transfer is better. In a desert or jungle a satellite data transfer or small flash storage, that can be manually collected and logged into network.

Environmental Monitoring Arduino - The Arduino Guy

The blog of ‘The Arduino Guy’ aka Mike McRoberts

The basic premise of the project is to have sensor nodes monitoring things such as temperature, pressure, humidity, light levels and so on and then send that data wirelessly back to a base station which will upload it to a web server.

The Complete Beginners Guide to The Arduino

Earthshine Electronics
Suite 13365 2nd Floor 145-157 St John Street London EC1V 4PY, UK.