Sit.Up – alerts the user if sitting to long
https://www.electronics-lab.com/sit-up-alerts-the-user-if-sitting-to-long/
electrobob.com has build a device that alerts you if sitting to long: Sitting for long periods has become more common in today’s jobs causing serious health issues. Unfortunately the plethora of activity trackers fail to address the issue: being rather active while sitting does not provide a good picture of the amount of time spent […]
Siglent SDM3055 5.5 Digit Bench Multimeter Review
https://www.electronics-lab.com/siglent-sdm3055-5-5-digit-bench-multimeter-review/
SIGLENT’s SDM3055 series is a dual display digital desktop multimeter. The SDM3055 provides a rich and powerful feature set at an excellent price. This DMM family is well suited for production testing, R&D and certification work, as well as any place ｗｈｅｒｅ an accurate and powerful full-function DMM is needed. In the SDM3055’s design and […]
Teardown & Analysis of a Keysight InfiniMax III N2802A 25GHz Active Probe
https://www.electronics-lab.com/teardown-analysis-of-a-keysight-infinimax-iii-n2802a-25ghz-active-probe/
In this episode Shahriar takes a close look at one of Keysight (Agilent) InfiniMax III active probes. The model N2802A offers 25GHz of analog bandwidth, 17.5pS of rise time and a total differential input capacitance of 32fF at 10k-Ohm input impedance. The front-end amplifier of this active probe is designed in an in-house InP process, […]
TSG4106A RF signal generator unboxing and mini feature review
https://www.electronics-lab.com/tsg4106a-rf-signal-generator-unboxing-and-mini-feature-review/
Always an exciting day when a new piece of equipment arrives at the lab! The basic features of the lab’s new Tektronix TSG4106A RF Signal Generator are reviewed, including a peek at some of the auxiliary signals available on the rear panel. TSG4106A RF signal generator unboxing and mini feature review – [Link]
ESP8266 touchscreen WiFi light controller and clock
https://www.electronics-lab.com/esp8266-touchscreen-wifi-light-controller-and-clock/
Spiros Papadimitriou has build a WiFi light controller and clock based on ESP8266: A couple of months ago I picked up cheap WiFi-controlled LED bulbs (one among dozens of very similar devices), after seeing them at a friend’s place. This turned out to be an excuse to play with the ESP8266, which has inspired several […]
Resistor Scanner Android App
https://www.electronics-lab.com/resistor-scanner-android-app/
Resistor Scanner is an Android app that uses OpenCV to scan resistor colour bands and determines their values.Uses OpenCV to scan resistor colour bands and determines resistor values. Source available here: https://github.com/thegouger/ResistorScanner/ Resistor Scanner Android App – [Link]
Raspberry PI answers, “Is the internet up?”
https://www.electronics-lab.com/raspberry-pi-answers-is-the-internet-up/
whiskeytangohotel.com has build a internet monitoring device based on Raspberry Pi: It is a pretty commonly uttered question (sometimes loudly) around the home or office; “Is the internet up?” As the goto IT Support Manager around the house this can get a little tiresome. Most of the time the internet is up and it’s a […]
Voltage indicator transitions between colours
https://www.electronics-lab.com/voltage-indicator-transitions-between-colours-2/
by Einar Abell @ edn.com: This Design Idea gives two versions of an indicator light that changes from green to red as a battery discharges. There are many circuits that do this sort of thing, but all the ones I have seen are too complex and costly for my taste. This DI shows a method […]
LTC3335 – Nanopower Buck-Boost DC/DC with Integrated Coulomb Counter
https://www.electronics-lab.com/ltc3335-nanopower-buck-boost-dcdc-with-integrated-coulomb-counter/
The LTC®3335 is a high efficiency, low quiescent current (680nA) buck-boost DC/DC converter with an integrated precision coulomb counter which monitors accumulated battery discharge in long life battery powered applications. The buck-boost can operate down to 1.8V on its input and provides eight pin-selectable output voltages with up to 50mA of output current. The coulomb […]
Mini Project: Doorbell Memory
https://www.electronics-lab.com/mini-project-doorbell-memory/
by Jan Buiting @ elektormagazine.com: Even in the Internet & Wi-Fi age where it seems irrelevant just where you are at a specific time, it’s sometime useful to know if a visitor called at your door while you were out. Who knows, it might be the DHL man with a delivery of essential components! The little […]