CheapStat – DIY Potentiostat

CheapStat: An Open-Source, “Do-It-Yourself” Potentiostat for Analytical and Educational Applications.

CheapStat – DIY Potentiostat

CheapStat, an inexpensive (<$80), open-source (software and hardware), hand-held potentiostat that can be constructed by anyone who is proficient at assembling circuits. This device supports a number of potential waveforms necessary to perform cyclic, square wave, linear sweep and anodic stripping voltammetry.

CheapStat - DIY Potentiostat

The device supports cyclic, square wave, linear sweep and stripping voltammetry over the potential range ?990to +990 mV and over frequencies from 1 to 1000 Hz. The device supports a range of environmental, food and drug quality control, and educational applications. The reverse of the circuit board supports a three-line LCD display and a joystick, which is used to select an experiment protocol, change its parameters (frequency, starting voltage, end voltage, scan rate), and initiate the experiment.

DIY Potentiostat – CheapStat – EEMetric

The device’s schematics, parts lists, circuit board layout files, sample experiments, and detailed assembly instructions are available in the supporting information and are released under an open hardware license.

EM Electronics – Nanovolt Amplifiers

Miniature amplifier modules for high resolution temperature measurement and calorimetry. Resolve micro degrees with Thermocouples.

EM Electronics – Nanovolt Amplifiers

EM Electronics was formed in 1979. One of the earliest projects undertaken was the study of very low level DC amplification.

The original prototype instrument was demonstrated to the Division of Electrical Science at the National Physical Laboratory in Teddington, and shortly after this a first instrument was ordered.

  • Selecting the Correct Nanovolt Amplifier
  • Ultra Low Level DC Voltage Amplifiers
  • Low Level DC Voltage Amplifier Modules

A22 is a low noise amplifier module for sensitive DC measurements, data collection and systems, and is ideal for very sensitive temperature measurement using thermocouples.

EM DC Amplifier model A22

EM DC Amplifier model A22

The A22 has many other features desirable in a measurement amplifier. The very high loop voltage gain of 100T, or 280dB, means that high overall gain may be used, controlled precisely by feedback resistors, thus ensuring good linearity, with the accuracy defined by the feedback resistors used.

EM Electronics
7 Clos de Bas, St. Peter Port, Guernsey GY1 1TS, Channel Islands, Great Britain.

Erlich Industrial Development Corporation

High-end computerized lab equipment, accessories and sensors. They also manufacture OEM transducers, signal conditioners, industrial standards interface boards and kits. (USA Firm)

Erlich Industrial Development Corporation

Erlich Industrial Development Corporation (EID) is an OEM manufacturing and R&D Company specializing in the development of high technology biological, medical and chemical research products.

Adjustable Output Positive Voltage Power-Supply Kit

Interface board conductivity

An electronics board (kit) that allows you to connect up to 30V AC or DC on one side of the board and get adjustable VDC regulated on the other side. Every lab should have a few of these boards handy. The boards will allow you to easily power all your analog components (i.e. op-amp). The Terminal Block TB connector is included and makes it easy to use.

Interface board conductivity cell with DIN Rail clip

Interface board conductivity

Build your own Conductivity meter and/or controller and save. Simply connect your Conductivity cell (conductivity electrode, Probe) to the input via Terminal Board (TB) and the output to analog to digital converter (ADC), Digital voltmeter (DVM), Analog Voltmeter, micro-controller (MC) or PLC. Power the board and get reading.

Digital Stethoscope – Texas Instruments

TMS320VC5505 evaluation module and analog front-end module make up the new C5505 DS Medical Development Kit (MDK).

This will be useful for Medical Electronic Students.TMS320VC5505 is a Low-Power Fixed-Point Digital Signal Processor DSP. A project with this will probably build Analog and DSP Skills to a High Degree. Also when you make a Battery operated Medical device, Power Electronics basics will be understood. Build on this something more, not just a Stethoscope. Make it more sensitive to record the sounds of Joints on Movement. This may help diagnose Bone problems early.

Block Diagram (SBD) – Digital Stethoscope – TI.com

“The main elements of a Digital Stethoscope are the sensor unit that captures the heart and lung sounds (also known as auscultations), digitization, and digital processing of the auscultations for noise reduction, filtering and amplification. Algorithms for heart rate detection and heart defect detection may also be included.”

Electrochemistry Encyclopedia

This site contains popular-science style articles describing many aspects of electrochemistry. New articles are added at irregular intervals, and all articles are periodically updated as recent developments occur in the field.

Electrochemistry Encyclopedia

  • Anodizing – Robert S Alwitt
  • Brine electrolysis – Tilak V. Bommaraju and Paul J. Orosz
  • Corrosion inhibition – Norman Hackerman
  • Dielectrics – William D. Brown, Dennis Hess, Vimal Desai, and M. Jamal Deen
  • Electric fish, electric organ discharges, and electroreception – Theodore H. Bullock
  • Electrochemical engineering – Richard C. Alkire and Thomas W. Chapman
  • Electrochemical machining – Joseph McGeough

Extractive metallurgy

Extractive metallurgy

“Metal sulfide flotation concentrates can be treated in a number of ways. These include using pyrometallurgy, or smelting at high temperature, in which process the sulfur in the metal sulfide is oxidized with air or oxygen to sulfur dioxide, and molten metal is produced.”


Materials-Science of which Chemical/Electrochemical Engineering is a part; is behind all the development of electronic components and manufacturing. The Backbone is Applied Science. A Super Capacitor or a Special RF Semiconductor can only be developed using the research and efforts of these scientists.

The Sciences or their study has been much nurtured and supported by some countries like the USA. This is the foundation on which many other Technologies like Electronics and Computing thrive. In many other countries this is many times not even perceived as its is not ‘glamorous’ and requires much efforts and dedication.

“If the Foundation of Applied Sciences is sound, the Building of Technology is Sturdy”

As said by –

Elektrick Power Jedi

Elektrick Power Jedi – Charge Minds with Electricity

Mass Spectrometry and Portable Microbe Detector

Human Beings are helped or hampered by many types of Microbes. From the Sub-Microbe virus to animal like Bacterium and plant like Fungi.

An Affordable Portable Electronic Microbe Detector using Mass Spectrometry; may be very useful for Small HealthCare Centers and Homes. If a Person Breathes into an adapter in the instrument, it should show a simple analysis of the Air Microbe Levels. It can also be used for CleanRoom Air Purity Indication.

This is just an idea for an urgent need, this may prevent spread of flu to escalate into an epidemic; due to early detection of microbe, at the root, in every home.

Here are some Mass Spectrometry Resources that students can study and attempt to research to Develop a cost-effective consumer flu-detection device.

Digital Electronic Stethoscopes

The Heart, Liver and Kidney form a Vital Organ Tripod, on which rests the most Important Organ… Think about it……You are Thinking with it. Rack your Grey Matter with your copy of the Gray’s Anatomy; to figure this Puzzle within.Digital Electronic Stethoscopes

Any of these three Legs, of this Tripod, Can be affected by wrong eating and living habits. After a certain age, you have to only Eat what you can burn, The rest is Poison. An electrician knows, If an Equipment is rated for for 12-Volts 3-Amps; He has to use within its Limits. An Electronics Engineer knows that he should never go near the “Absolute Maximum ratings”.

Study more about the Vital Organ called Heart, by building an Electronic Stethoscope. See the Block Diagram (SBD) – Digital Stethoscope – TI.com. The sounds are very faint and a low frequency. It is a Bionic Challenge to acquire and amplify these small signals. Learn more about these concepts here …

The SS30L Electronic Stethoscope will allow you to record and listen to heart sounds and Korotkoff sounds.

Here is a another Semiconductor Application from Maxim-IC Digital Stethoscope.

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