The project consists of an automatic transistor tester, which allows you to identify the pinout and characteristics of various discrete semiconductors (NPN, PNP, MOSFET transistors, etc.). It is also capable of measuring resistors, capacitors, inductances and diodes. The original project was written in a mix of C and AVR Assembly Code; this instead uses an…
Samson March, an inquisitive Redditor, recently revealed that he built an entire smartwatch from scratch and he shared details of the process down to the smallest minutiae: his creation is named Smarch Watch. I decided sometime last year that I wanted to make a smart watch from scratch. I am an electrical engineer and product…
“The clock actually consists of two clocks, the first being a 6 x IN-18 tube clock which is mounted on the clock’s top and displays both time and date. The second clock, this time based on 6 x IN-12A and 2 x IN-15A nixie tubes displays at the front of the clock and can display,…
Usually 3D printers that use resin and stereolithography apparatus technology (SLA) allow more detailed, yet faster prints, but storing and keeping the liquid resin is a bit more challenging than simply handling filament (FDM 3d printer). Differently from a filament printer, a 3cm height object is printable in one hour. Alfawise recently released its W10 SLA 3D…
Last year I’ve made two door lock projects. One was the keypad project and the second one was an RFID door lock project each with a 3D printed case and a servo to open the door. Today I have a new one and probably the last door lock project on this channel. This is a…
The portable synthesiser workstation created by Topisani started as a clone of the well-known Teenage Engineering OP-1. However over time Topisani has pushed the music box in a new direction and is currently designing a new user interface while still maintaining the small form factor inspiration of the OP-1. The heart of the OTTO is…
“I recently found a Hittite (acquired by Analog Devices in 2014) HMC624LP4E evaluation board gathering dust in my miscellaneous PCB bin and thought it might be a great little project to add a microcontroller interface to it so I can use it as a convenient digital attenuator in my lab. The HMC624LP4E had been replaced…
Cultural probes aim to elicit unique responses by asking people to respond to a question, many times in the form of a photograph. The most basic type in this series of cameras is known as the TaskCam, which features a 3D-printed frame and an Arduino Uno at its core. A shield with several snap-off sections provides user interface,…
Adafruit is pleased to announce a new product: the Espruino Pixl.js, a JavaScript microcontroller with LCD. The small LCD display can be programmed and debugged wirelessly with JavaScript and is both multi-functional and easy to use. With a custom circuit board equipped with both the Nordic nRF52832 BLE chipset, some input buttons and a monochrome…
“To open the box, my giftee must complete the trivia game, there are 25 questions all based around my giftee’s interests, posts and hobbies. Once complete they will be rewarded with the gifts inside. I also included a wireless access point which activates upon completion of the game. Connecting to this access point reveals a website…
Onion’s Oboo Smart Clock BT music streamer is built on its Linux-driven Omega2 COM, and offers 3W speakers, device charging, and WiFi-based info updates. All four available models measure 152 x 62 x 30mm, and offer a customizable clock display. There’s also a small, color LCD display with smartwatch-like informational “cards” for WiFi-connected updates to…
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