Posts Tagged ‘Measuring instruments’

TASCAM Sound Recorder (Part 2)

Part 1, 2, 3 And here it comes! Packed in a cardbox box which contains: 1 Tascam DR-40 recorder wrapped in plastic bag 1 mini USB cable 1 user Manual printed in various languages 3 alkaline batteries 1 small rubber stand in a small plastic bag! Watch out, this small rubber stand is a very […]

TASCAM Sound Recorder (Part 1)

Part 1, 2, 3 The followers of arduinoos know that I have a constant and strong interest in sound recording and analysis. As I get more and more requests for specific sound analysis, I decided to get a semi-professional sound recorder to capture sound events in various environments. Thus the wish list that I used […]

Metal detector (Part 1)

“Dear cousin, I lost my keys in the middle of the meadows, would you please make a metal detector for me ? Urgent !“ This is really how this project started ! More or less, as I have in mind the design of an Earth’s Field Nuclear Magnetic Resonance spectrometer which features magnetic fields sensors on […]

PLD (Part 3)

Part 1, 2, 3, 4, 5, 6 The name PLD stands for “Place and Leave Device”. The original design is big enough to encapsulate its power reserve, the radio module, an arduino ™ microcontroller which will run your own code, and connectors for programming, debugging or plugging sensors. The radio module features the HL2 stack which handles data in terms of […]

Random number generator (Part 2)

Part 1, 2, 3 Here is a noisy signal sampled at 100 kHz with an Arduino UNO. The signal has 8 bits of resolution and the divider bridge of the final amplifying stage has been set so that the ADC range matches (without exceeding) the input signal range. Here is the illustration of a vector of 1024 […]

Range finder (Part 2)

Part 1, 2 As in most arduinoos posts, the examples given here differ from what is usually seen and read in terms of  code efficiency  and ruggedness of applications. Early tests performed on the HC-SR04 module proved its easiness of setup and interesting results obtained from scratch. However things are changing when accuracy is concerned and headaches […]

Engine RPM (Part 5)

Part 1, 2, 3, 4, 5 The last two posts explained how to check whether the speed of a rotating object agreed with a predefined value or not. To the cost of an additional optical sensor and a display, we may now measure any rotating speed still without contacts between the moving object and the […]

Publication of the day

I am very glad to announce the first official publication involving the PlainDSP kit and the team behind the scene. We also congratulate Kostas and his team for designing such an awesome detector. Although PlainDSP kits can be used in the context of ludic applications, it provides all the means necessary for the design of much […]

Blog of the day

“Measure the mass of an eyelash with a DIY microbalance”, an awesome project from electronics-lab.com

RIGOL 1052E DSO (Part 3)

Part 1, 2, 3 Erratic clicks! Life goes on and the Rigol 1052E remains a reliable companion still purring and always ready to help diagnosing circuits and running prototypes testing. Sometimes ago, I experienced some strange changes in time and amplitude scales when using the notched rotary encoders. Values where jumping erratically from one value to an other, whatever […]