by weirdlab.fr: I “rebuild” my Geiger counter, the SBM-20 tube was initially inside the box, i have put this one inside a 32mm diam plastic tube, for more convenience, wired through a XLR3 cable. This counter is from “Electronique-Pratique” n°368, a french electronic...

Keithley DMM7510 7.5-Digit Multimeter Review, Teardown & Experiments -...

This video describes what the "phase dots" are that you often see adjacent to windings of a transformer. It discusses how these dots are used in certain circuits to establish a desired phase relationship between the signals on the various windings. A couple of tips are given regarding...

by netzener @ instructables.com: When I started my career in control systems I was fascinated with the many different ways that machines could be interfaced to the environment they operated in. Limit switches (electrical and optical), encoders, resolvers, strain gauges,...

Clamp multimeter UT204 measures reliably even in real conditions of nowadays mains supplies and for an affordable price moreover. UT204 from company UNI-Trend is a near relative to the UT203. multimeter. Already UT203 provides a lot of user comfort and a very pleasant...

This powerful RF transceiver is also highly secure thanks to a HW support of CRC-16 and AES-128. The RFM69HCW is a highly integrated RF transceiver capable of operation over a wide frequency range, including the 433, 868 and 915 MHz license-free ISM (Industry Scientific...

Shadowandy’s Arduino-based Dust Sensor project: Put together a dust sensor using Arduino Mega 2560, Shinyei PPD42NS dust sensor and LCD shield. The codes and wiring instructions for Arduino Mega 2560 and Shinyei PPD42NS is as follow. However, I did include Serial output so you...

RS232 to RS485 Board (R) provides a seamless connection of the PC to an RS485 network. Simplex connection of this interface to the RS485 network Easy way of switching the modes between Receiver and Transmitter ( Slide Switch) 5 V regulated supply provision on board 9-pin,...