The UDOO X86 board is a single board computer based on Intel quad core 64-bit chipset that runs Windows 10 and any flavor of Linux. The board also has a separate chipset with a full implementation of Arduino. But what make it special is the 64-bit operating system, the USB 3.0 support, up to 8GB of RAM, eMMC/M.2 SSD/MicroSD/SATA, Intel HD graphics, Gigabit ethernet, Separate non-shared data buses and it’s very good expandability. To learn how it’s compared to Raspberry Pi, check the full article by James Chambers here.
This article describes a simple continuity tester based on an ATtiny85. The tester features a buzzer that sounds to help you determinate the trace continuity. It is designed for checking circuit wiring, or tracing out the tracks on a PCB. According to it’s author David Johnson-Davies it has a low threshold resistance of 50Ω to avoid false positives, and passes less than 0.1mA through the circuit under test, to avoid affecting sensitive components. It’s powered from a small button cell, and automatically switches itself off when not in use, avoiding the need for an on/off switch.
Pi/104 is a Pi Compute carrier board in PC/104 format with industrial durability.
The Pi Compute Module is a powerful tool for custom electronics projects. But if your project requires industrial grade specifications, you’re currently out-of-luck. This is where Pi/104 comes in – with a wide temperature rating and a power supply that encompasses common industrial cabinet voltages. Pi/104 doesn’t try to do too much out of the box. Instead, it relies on an industry standard form factor for accessories, which allows people to build custom stacks to meet their goals in a cost effective way. It also means the base board is cheaper, bringing an industry-ready board to the hobby market.
- Based on the PC/104 format, compact, sturdy, and stackable.
- Uses the “OneBank” connector leaving more PCB area and cheaper than a full PCIe/104 connector.
- “OneBank” has 5/3.3 V and two USB channels allowing you to use USB-powered peripherals in the stack such as cellular modems, Wi-Fi cards, USB to SATA, FPGA, and serial connectors. (Note: PCIe pins in OneBank connector are not used.)
- Flexible power. Board can be powered through the wire terminals (8 to 35 volts), OneBank connector (5 V and 3.3 V), or through the USB OTG connector.
- USB OTG connector supports full range of functionality including OTG and USB boot.
- Display flexibility with either HDMI or DSI support as well as a camera through the CSI port
- IDE-style connectors for GPIO, making I/O ribbon cables easy to find. Connector closest to module is pin compatible with Raspberry Pi and has been successfully tested with several HATs. The other connector carries the rest of the compute module pins and some extra grounds.
- Recessed Ethernet connector allows for a full size, standard ethernet cable to be used even in stack configuration.
- On-board microSD card slot allows for use of Pi Compute 3 Lite modules.
- 2 x USB A
- 1 x microUSB OTG
- 1 x HDMI
- 1 x 10/100 Ethernet
- 1 x microSD slot (CM3L only)
- 1 x CSI
- 1 x DSI
- 59 x GPIO in two IDE-style connectors
- OneBank stacakble connector with 2 USB and 5/3.3 V
- Wide power supply, 8-36 V
- Temperature spec with Pi Compute Module, -25° C to 85° C
- Temperature spec without Pi Compute Module, -40° C to 85° C
This project is the ideal solution for high output, high performance high fidelity stereo head phone amplifier. The project consists of Op-Amp LME498720 and LME49600 as output driver. The LME49600 is able to drive 32Ω headphones to a dissipation of greater than 500mW at 0.00003% THD+N while operating on ±12V power supply voltages. The LME49600 is a high performance, low distortion high fidelity 250mA audio buffer. The LME49600 is designed for a wide range of applications and is fully protected through internal current limit and thermal shutdown.
Hi-Fi Stereo Headphone Amplifier using LME49600 – [Link]
Inspired by the biology of a bee, researchers at the Wyss Institute developed RoboBees, man-made microbots that could perform endless roles in agriculture or disaster relief. A RoboBee is about half the size of a paper clip, weighs less than one-tenth of a gram, and flies using materials that contract when an electric pulse is applied. Now, they progressed even further and designed a hybrid RoboBee that can fly, dive into water, swim, propel itself back out of the water, and safely land.
New floating devices allow this multipurpose air-water microrobot to stabilize on the water’s surface before an internal combustion system ignites to propel it back into the air. This latest-generation RoboBee is 1000 times lighter than any previous aerial-to-aquatic robot. This can be used for numerous applications, from search-and-rescue operations to environmental monitoring and biological studies. Yufeng Chen, Ph.D. and a Postdoctoral Fellow at the Wyss Institute, said:
This is the first microrobot capable of repeatedly moving in and through complex environments
The researchers have faced numerous challenges to design a millimeter-sized robot that moves in and out of the water. The robot’s wing flapping speed will vary widely between the two mediums as water is 1000 times denser than air. If the flapping frequency is too low, the RoboBee can’t fly. If it’s too high, the wing will snap off in the water. So, it requires a precise balancing as well as a smart multimodal locomotive strategy to overcome this problem.
RoboBee has four buoyant outriggers and a central gas collection chamber. Once the RoboBee swims to the surface, an electrolytic plate in the chamber converts water into oxyhydrogen, a highly combustible gas fuel. The gas increases the robot’s buoyancy and pushes the wings out of the water. The outriggers stabilize the RoboBee on the water’s surface. Elizabeth Farrell Helbling, a graduate student in the Microrobotics Lab, said:
Because the RoboBee has a limited payload capacity, it cannot carry its own fuel, so we had to come up with a creative solution to exploit resources from the environment.
The research team hopes that in future research the RoboBee can fly immediately upon propulsion out of the water, which is currently not possible due to the lack of onboard sensors and limitations in the current motion-tracking system.
Ossia has created the world’s first wirelessly-powered alternative to disposable AA batteries. The “Forever Battery” puts a long distance wireless power receiver into an AA battery format. The technology can receive up to 4W from a nearby RF transmitter (Cota transmitter), and includes a data link. [via]
Forever Battery bridges the gap between the battery-wire age and the wireless power era,” said Mario Obeidat, CEO of Ossia. “When people see how Cota Real Wireless Power can be implemented in a AA battery, they will start to see the vision of Cota everywhere. The Forever Battery will create awareness of Cota and provide confidence that devices will be powered when it matters.
Read about epitaxial ultrafast diodes in thia app note from IXYS. (PDF)
During the last 10 years, power supply topology has undergone a basic change. Power supplies of all kinds are now constructed so that heavy and bulky 50/60 Hz mains transformers are no longer necessary. These transformers represented the major part of volume and weight of a traditional power supply.
Characteristics and applications of fast recovery epitaxial diodes – [Link]
SYZYGY Brain-1 is an open source, modular ARM + FPGA development platform featuring the new SYZYGY standard for high-performance peripherals. This new development board bridges the gap between Pmods and FMCs allowing high performance peripherals to be used with ease. The author claims it’s the first realization of a carrier board supporting SYZYGY that can be used in various high performance applications. The development board is live on crowdsupply.com and has 50 days to go.
- Data Acquisition
- Machine Vision
- Digital Communications
- Software Defined Radio (SDR)
- Video Output
- Multi-channel I/O
Features and Specifications
- Xilinx Zynq 7012S Single-core ARM + FPGA (dual-core 7015 optional)
- 667 MHz ARM Cortex-A9
- 55,000 programmable logic cells
- 2.5 Mb block memory on FPGA
- 120 DSP slices
- Open source hardware – Schematics and PCB artwork will be available for free.
- Open source software – Linux board support package sources will be available for free.
- Compact form factor: 110 mm x 75 mm
- Wide input power supply: +5 V to +18 V
- 3 x SYZYGY standard ports
- 28 I/O each
- 2 x clock pairs each (could also be used as I/O)
- 1 x SYZYGY transceiver port
- 18 I/O
- 2 x GTP receive pairs (up to 3.75 Gb/s)
- 2 x GTP transmit pairs (up to 3.75 Gb/s)
- 1 x transceiver reference clock pair
- 1 GB DDR3 memory
- 1 x Gigabit Ethernet (via RJ-45)
- 1 x USB Type-C OTG
- 1 x USB (serial console for ARM)
- SYZYGY SmartVIO support with two groups
- microSD card slot
- 8 x LEDs
- 2 x User I/O pushbuttons
- 1 x Reset pushbutton
The Universal Op-Amp Development board is a general purpose blank circuit board that simplify prototyping circuits for a variety of Op-Amp circuits. The evaluation module board design allows many different circuits to be constructed easily and quickly. This board supports single SOT23-5 package. Universal single Operational Amplifier (Op-Amp) board is designed to aid in the evaluation and testing of the low voltage/low power and some precision operational amplifiers.
Universal OpAmp Evaluation Board Using LMV321 – [Link]
Arduino Nano to PIC40/28 PIN development shield is an extension for Arduino Nano. This project is useful to create many projects using PIC40/28PIN shield published on electronics-lab.com, refer to schematic and connection diagram to use this shield. Two on board regulators are provided which outputs 5V DC and 3.3V DC, this dual supply helps many projects which need dual supply. Jumper J1 is for supply selection VCC To 3.3V or 5V, diode provided at input of regulator for reverse supply protection. Not populated J4, Close J3 to supply 5V to Nano.
Arduino Nano to PIC40/28 Pin Shield – [Link]