Geiger counter with SBM20 tube
https://www.electronics-lab.com/project/geiger-counter-with-sbm20-tube/
I “rebuild” my Geiger counter, the SBM-20 tube was initially inside the box, so, i have put this one inside a 32mm diam plastic tube, for more convenience, wired through a XLR3 cable. The LCD display alternatively, the “count per minutes” and result on: milli Sievert/year or nano Sievert/hour, you can switch off/on the buzzer, […]
Capacitance Meter
https://www.electronics-lab.com/capacitance-meter/
by ThomasVDD @ instructables.com: Capacitors are vital components in electronics, but sometimes they are broken, or the value printed on the cap has become unreadable. Because my multi-meter does not have a capacitance measurement, I decided to make one! The principle of measuring capacitance is quite simple. The voltage of a capacitor charging through a resistor […]
How to Control Your ESP8266 From Anywhere in the World
https://www.electronics-lab.com/how-to-control-your-esp8266-from-anywhere-in-the-world/
by Rui Santos @ randomnerdtutorials.com: The most common questions I get about the ESP8266 WiFi Modules are: “Is it possible to control my ESP8266 from anywhere in the world?” and “How can I control my ESP8266 from anywhere?”. I’m happy to announce today that I have a solution for that problem. With the new version of […]
Get a constant +5V output by switching between a +5V input and a single-cell LI+ rechargeable cell
https://www.electronics-lab.com/get-a-constant-5v-output-by-switching-between-a-5v-input-and-a-single-cell-li-rechargeable-cell/
App note from Maxim Integrated on providing smooth power from two sources. Link here (PDF) Design provides a simple method for maintaining an uninterrupted +5V even while switching between the external +5V supply and a rechargeable single-cell Li+ battery. Get a constant +5V output by switching between a +5V input and a single-cell LI+ rechargeable cell […]
Posting a Tweet with the ESP8266
https://www.electronics-lab.com/posting-a-tweet-with-the-esp8266/
by Rui Santos @ randomnerdtutorials.com: In this project you’re going to post a Tweet with an ESP8266. The goal of this project is to show the endless possibilities that this $4 WiFi module offers when integrates with a free platform that I’m about to show you. In order to accomplish this task you have to sign […]
4 x 4 mm GPS module for wearables, portables, in distribution
https://www.electronics-lab.com/4-x-4-mm-gps-module-for-wearables-portables-in-distribution/
by Graham Prophet @ edn-europe.com: Distributor Acal BFi has the Nano Spider from OriginGPS; the miniature module makes it possible for manufacturers to bring accurate GPS to tiny devices. Claimed as the world’s smallest GPS module, Nano Spider is a fully integrated, sensitive GPS receiver module. Measuring 4.1 x 4.1 x 2.1 mm and with low […]
Energy-harvesting power management ICs for wireless sensor nodes
https://www.electronics-lab.com/energy-harvesting-power-management-ics-for-wireless-sensor-nodes/
by Graham Prophet @ edn-europe.com: Cypress Semiconductor has introduced what it believes to be the lowest-available-power PMICs that enable an integrated module size of 1 cm² for solar-powered wireless sensor node (WSN) designs. Intended to manage solar-powered wireless sensors for Internet of Things (IoT) applications, these parts are said to be the lowest-power, single-chip Energy Harvesting […]
DHT22 Humidity datalogger
https://www.electronics-lab.com/dht22-humidity-datalogger/
by luckyresistor.me: There is a large cellar where I could store unused items and documents, but the catch is the humidity there. It is a root cellar near a small brook and the humidity varies between 75% up to 90%. Archived material should never be exposed to humidity greater than 65%, therefore I have to isolate […]
How to control LM2596 buck-converter with microcontroller
https://www.electronics-lab.com/how-to-control-lm2596-buck-converter-with-microcontroller/
by hugatry @ hackvlog.com: Every now and then someone asks on different forums if there is an way to control cheap LM2596 modules with an Arduino or another microcontroller. I decided to demonstrate one solution that might be basic electronics for some, but still many don’t know about. Those buck converters will change the output voltage […]
How to build a simple laser tachometer
https://www.electronics-lab.com/how-to-build-a-simple-laser-tachometer/
Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices. How to build a simple laser tachometer – [Link]