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Designing with an inverted-F 2.4 GHz PCB antenna
PCB design guide for an inverted-F 2.4 GHz antenna from Silicon Labs. One of the main reasons to use a PCB antenna is to reduce cost. Since the antennas are printed directly on the board, they are generally considered to be free. On boards with room to spare, this will be true. On...
Continue ReadingMaxim Integrated MAX20077/MAX25277 Mini Buck Converters
Maxim Integrated MAX20077/MAX25277 36V, 2.5A Mini Buck Converters offer integrated high-side and low-side switches and is designed to deliver up to 2.5A (2.0A for the MAX20077ATCC/VY+) with 3.5V to 36V input voltages while using only 3.5µA quiescent current at no load. The...
Continue ReadingMorphESP 240 ESP32-S2 board integrates a 1.3-inch color display (Crowdfunding)
We have seen a lot of variations of the ESP32 throughout its life cycle. At Morpheans, the lack of boards for the ESP32-S2 triggered them into making their own take on the board. Then, the MorphESP 240 was born! An ESP32-S2 based board with a high-resolution IPS, colorful display built...
Continue ReadinguChip VGA 2.0 is an Open hardware DIY retro-gaming console
Itaca Innovation has launched a campaign on Crowdsupply for a DIY open hardware retro-gaming console called uSVC. The uSVC is a simple, DIY game console that enables you to create and play retro-style 8-bit games with standard USB controllers and keyboards. It comes as a kit, so you...
Continue ReadingRGB LED Controller using Atmega328
This is a 3-channel, PWM based current-adjustable LED driver designed for RGB LED control. The circuit has been designed to control high current RGB LEDs or RGB LEDs strip. Colors of the three RGB LEDs can be set using 3 potentiometers, different colors are possible by adjusting these...
Continue ReadingMonolithic Power Systems’ 5 V USB, 1 A, I²C-controlled linear charger
The MP2667 from Monolithic Power Systems is a highly integrated, single-cell, Li-ion/Li-polymer battery charger with system power path management for space-limited portable applications. This device takes input power from either an AC adapter or a USB port to supply the system load and...
Continue ReadingTiny Allwinner H3 Based Linux Development Kit Comes With SoM and Expansion Board
Seeed Studio provided Zhihui with a complete service from PCBA prototyping, customization, and consignment services, bring the product from idea to market. This has led to an open-source, Linux Development Kit with SoM and Expansion Board that runs Ubuntu Core on a quad-core Allwinner...
Continue ReadingSelpic Star A – A Cost-Effective Multifunctional mini 3D Printer
Star A: The Most Cost-Effective Multifunctional 3D Printer - An easy to install & operate 3D printer with touchscreen, laser engraving, and a multitude of features, starting from only $99. Selpic Inc has launched a campaign on Kickstarter for a 3D printer called Star A. 3D...
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