Ryan Flowers over at MiscDotGeek posted a how-to on building a direct conversion receiver: In the first installment of this series, we discussed why we’re building a Direct Conversion receiver and talked about some basic ideas. In this installment, we explore what it takes to make the leap from a printed schematic to something physical […]
Sebastian writes: USB MIDI controllers (such as Launchpad Mini Mk II for example) are common and often quite low in cost. To interface such a controller with a Eurorack synth system, often a host computer and a MIDI to CV interface might be used. The host computer would take USB MIDI data from the MIDI […]
Liudr shared a how-to on calibrating a sensor: First of all, what is calibration? In a general sense, calibrating a sensor makes the sensor provide the most accurate readings allowed by the sensor’s own precision. As an example, let’s assume for a moment that the earth’s magnetic field and any other stray magnetic fields are […]
Coyt Barringer documented his home energy monitor project called POVON. This first part of a series will detail the 20 Channel sub-metering hardware: Our initial goal was to monitor power consumption in different parts of the house, and we quickly realized every household circuit would need to be monitored. After some research, small clip on […]
Sasa Karanovic shared a how-to on making a IoT LED dimmer: Making a IoT LED dimmer that you can control via your PC, phone, tablet or any other device connected to the network is super simple, and I’m going to show you how. I’m sharing my three channel LED dimmer that you can use to […]
A detailed instructions of how to build an Energy Load manager from Open Electronics: When the instantaneous power consumption exceeds the set values, it selectively disconnects the users, in order to prevent the electric meter to cut the power to disconnect. The management of the electricity users at home, intended as the possibility to define […]
Andy Pugh wrote a post on his blog detailing STMBL servo drive assembly: The main documentation (work in progress) is relevant to both the current and future versions of the drive. However due to the withdrawal from the market of the IRAM256 chip used by the board any future versions are likely to be physically […]
MSOP-10 soldering video at mitxela.com: I admit that when I made the video of me soldering an MSOP-10 package, I did it because I needed to use the chip right away, and didn’t have time to order a breakout board. But this time, I am just doing this for fun. MSOP is smaller than TSSOP which […]
Nick over at educ8s.tv shared detailed instructions of how to build this DIY Art Deco style FM Radio project using Arduino: Let’s see what we are going to build today! As you can see, we are going to build an Art Deco style FM radio receiver. The design of this radio is based on this […]
Scott W Harden writes , “The FT232 USB-to-serial converter is one of the most commonly-used methods of adding USB functionality to small projects, but recently I found that these chips are capable of sending more than just serial signals. With some creative programming, individual output pins can be big-banged to emulate a clock, data, and […]
Matt wrote an article describing a technique he used to mount DS18B20 temperature sensors: One of the biggest advantage of these sensors over I2C sensors, is that you can mount them almost anywhere. That having been said, I’ve never quite managed to come up with an elegant solution, particularly when attaching to a heatsink (for […]
electronupdate writes: One area of silicon reverse engineering which has interested me is the delayering of a chip to see each layer which allows superior visibility into the circuitry. I know of two ways: chemical etch and mechanical means. In this video I try to make a mechanical grinder which can take micron levels of […]
An article discusses the negative resistance and negative impedance converter from Analog Zoo: “Negative resistance” may seem like a purely academic concept, but can be easily realized in practice with a handful of common components. By adding a single resistor to a standard non-inverting op amp circuit, we can create a negative impedance converter, which […]
Ken Shirriff wrote an article showing how to read the monitor’s config data using the I2C protocol and a board with an I2C port: Have you ever wondered how your computer knows all the characteristics of your monitor— the supported resolutions, the model, and even the serial number? Most monitors use a system called DDC to communicate […]
NRF52 Bluetooth Low Energy Module PCB using laser printer/silver paste method by Rich Olson. More details at nothinglabs.com.
This video describes how to make and test your own YBCO superconductor by Ben Krasnow. More info on his blog here.
Mare writes: There are many battery cell simulators available which could simulate battery cell(s). Unfortunately, none is emulating any of the digital protocols used by fuel gauge devices. Optimal solution to efficiently emulate given smart battery pack is to use custom solution based on battery cell simulator and fuel gauge protocol emulator. Both parts could […]
A how-to on making a custom DIY magnetic disk encoder by Erich Styger: I’m making great progress with the firmware for the new Mini Sumo Robot (see “New Concept for 2018 Mini Sumo Roboter“). The goal is a versatile and low-cost Mini Sumo robot, and the robot comes with the feature of magnetic position encoders. […]
Coyt Barringer wrote a post on his blog showing how he program the Blue Pill STM32F103 using USB Bootloader and PlatformIO: This is the infamous Blue Pill board – a $2 ARM STM32F103 development board with all the capabilities of a Teensy 3.x at a fraction of the price of an Arduino. So what’s the […]
Tips & tricks to add probe wires for low-voltage, low-current signals on small fine pitch circuit boards. Via Electronupdate.