Battery powered MEGO Portable Power Supply fits into Breadboards

MEGO Portable Power Supply Breadboard

Breadboard power supplies like MB102 have been around for years, and some  even designed a variable power supply for breadboards, but EVO-IN-MOTION MEGO looks much neater as a fully enclosed power supply, 4 to 24V output, fitted with a LiPo battery, and a display to show current voltage. MEGO enabled on-the-go breadboard projects without any cables for the power supply. Just connect the power supply, and you’re good to go with power delivered from the built-in battery. MEGO power supply specifications: Output Voltage – 4-24V DC Maximum Power – 6W Safety – Overload protection; short circuit protection Typical Power Efficiency – 88% Voltage Display Accuracy – <1% Ripple Voltage – <1% Load Regulation – 270mV Battery – 7.4Whs (2,000 mAh @ 3.7V) Misc – Power button;, adjust knob for output voltage; low battery and charging LEDs Dimensions – 73 x 59 x 32 mm Weight – 100 grams Temperature Range – Operating: -15 to 45 °C; storage: -20 to 50 …

SainSmart DS213 Review – A Portable Mini Digital Storage Oscilloscope

DS213 Square Wave

Hey Karl here with another oscilloscope review. We are going to look at the DSO213 (aka DS213 mini DSO). It is a new handheld oscilloscope in the DSO line. I recently reviewed an oscilloscope that was a tethered USB oscilloscope and will use it as a comparison. The DSO213 is a compact, battery powered, oscilloscope that increases some specs over previous version the DSO203. DS213 Oscilloscope Unboxing and Teardown Pictures . I thought this was an interesting design choice. Pogo type pins connect this board. This series of scopes has been reviewed quite a bit and they have been well received and for a hobbyist they seem to be adequate. Model DSO213 DSO203 MCU STM32F103VE STM32F103VE ADC HWD9288 AD9288 Channels 2 analog, 2 digital 2 analog, 2 digital Analog Bandwidth 15MHz 8MHz Max Sample Rate 100MSa/s 72MSa/s Maximum Memory Depth 4K 4K Horizontal Sensitivity 100nS/Div~1S/Div(1-2-5sequence step) 0.1uS/Div~1S/Div(1-2-5sequence step) Vertical Sensitivity 10mv/Div~10V/Div(1-2-5sequence step) 50mv/Div~10V/Div(1-2-5sequence step) Input Resistance 1MΩ 1MΩ Coupling DC …

Gaokede Building in HuaQiangBei Electronics Market Closed, Scheduled for Destruction

Huaqiangbei gaokede building closed

HuaQiangBei electronics market is one of the most popular places for makers in Shenzhen, as you can purchase any kind of components in shops spread across several multi-story buildings. If you can’t find something over there, you’re unlikely to find it anywhere else. So this morning when I read an article entitled “Vendors protest eviction from Shenzhen’s historic Huaqiangbei electronics market” with photos like the one above I was shocked initially thinking the complete market would potentially close. I can still clearly remember SEG building along the main street when I lived in China many years ago. This building is still up and running, and instead Technode reports about the closure of the eight-story Gaokede building which was planned since the end of 2018, and the owner cut off electricity and water supplies yesterday. Even if you are a regular visitor, you’d be forgiven if you forgot where Gaokede is located exactly. It’s building 2 on the map above, while …

This $4 PWM Signal Generator Outputs Pulses up to 150 KHz

XY-PWM1 Signal Generator

When I think about signals generators, I usually think about equipment that costs several hundred dollars, but depending on your needs you could also use much cheaper solutions like PSLab electronics lab board ($65), or an Arduino board to generate a signal. Another option is to get an ultra-cheap signal generator such as XY-PWM1 which I found on ICStation for just $4.19.Its function is limited to PWM pulses from 1Hz to 150KHz, with a voltage range between 3.3V and 30V.  XY-PWM1 specifications: LCD display showing frequency and duty cycle Voltage Range – DC 3.3V-30V Frequency range Normal mode: 1Hz~150KHz Precise mode: 1Hz~15KHz Frequency accuracy: 2% Duty cycle accuracy 1% in Normal mode 0.1% in Precise mode Duty cycle range – 0.00%-100% Output Current – About 5-30mA Dimensions – 79x43x37mm Temperature Range – -40℃~85℃ Humidity – 0%~95% RH There’s no obvious button to select mode, but apparently, you’d just need to use a combination of short and long press to select the …

QC-MINI QC 2.0/3.0 USB fast charging board sells for $2

QC-MINI USB Fast Charging Board

QC-MINI is a USB fast charging board that can take 6V to 32V DC input from a power source such as solar panel, and outputs 3 to 12V via a USB port using QC 2.0/3.0 and other fast charging standards. The board can be useful to implement fast charging in any project, and it won’t break the bank as I’ve just come accross the module on IC Station for just $1.99. QC-MINI key features and specifications: Input voltage – 6.0V to 32V DC Output 5V DC up to 3.4A by default Fast Charging QC 2.0, QC 3.0 with 9V @ 2.5A and 12V @ 2A support BC1.2 protocol Apple protocol Samsung protocol MTK PE1.1/PE2.0 Huawei Fast Charge Protocol FCP, does not support mate9 (SCP) Spreadtrum Fast Charge Protocol SFCP Safety – Overvoltage protection, undervoltage protection, overcurrent protection, short circuit protection, over temperature protection. Misc – LED load indicator with brightness increasing with load Dimensions – 38x20x10 mm Temperature Range – …

XinaBox’s xChips Enable Modular Electronics for Makers & STEM Education

Xinabox xCHIPS ESP8266 UV Index Monitor

So today, I decided to have a look a 96Boards website to see if there was anything new from the community, and I came accross “X in a Box B901“, an “☒CHIP is designed to interface with the 96 Boards, such as the Dragonboard 410c. This provides an interface to support the ☒CHIP ecosystem, adding support for many additional sensors etc…” I had no idea what it was all about, so obviously I had to investigate. Xinabox (X in a Box) is an ecosystem of modular electronics boards used for developing, making products and learning. There are now over 70 modular xChip” with cores/CPUs, sensors, power, communication, output, and storage. They are interconnected together without wires, soldering, breadboards, and adapters are provided for Raspberry Pi, 96Boards, and other development boards. xChips can be sorted into 8 categories: Cores – MCU/CPI cores based on Microchip ATMega328P, SAMD21, ESP8266, or ESP32 with or without a LoRa radio Bridges – Used to connect …

PSLab Electronics Lab Board is Now Available for $65

PSLab Electronics Lab

Pocket Science Lab (PSLab) is an open source hardware USB board that aims to bring electronics labs to the masses, as it can act as an oscilloscope, voltmeter, programmable voltage and current source, logic analyzer, or signal generator when connected to a PC or mobile phone. This is not professional equipment, and instead designed for STEM education. When we first covered the board in August, it was still in development, but I’ve just found it is now listed and in stock on Seeed Studio for $64.90. FOSSASIA and OpnTec are the organization behind the board’s development. Here’s a reminder of PSLab board main specifications: MCU – Microchip PIC24EP256GP204 16-bit microcontroller @ up to 70 MHz with 32KB SRAM, 256KB flash Wireless Connectivity Footprint for ESP8266 module (ESP-12E) for 802.11 b/g/n WiFi (on bottom of board) Bluetooth extension slot 4-Channel, up to 2MSPS Oscilloscope 12-bit Voltmeter. Programmable gain. Input ranges from +/-10mV to +/-16V 3x 12-bit Programmable voltage sources: +/-3.3V,+/-5V,0-3V 12-bit …

FOSDEM 2019 Open Source Developers Meeting Schedule

FOSDEM 2019

FOSDEM – which stands for Free and Open Source Software Developers’ European Meeting – is a free-to-participate event where developers meet on the first week-end of February to discuss open source software & hardware projects. FOSDEM 2019 will take place on February 2 & 3, and the schedule has already been published with 671 speakers scheduled to speak in 711 events themselves sorted in 62 tracks. Like every year, I’ll create a virtual schedule based on some of the sessions most relevant to this blog in tracks such as  open hardware, open media, RISC-V, and hardware enablement tracks. February 2 10:30 – 10:55 – VkRunner: a Vulkan shader test tool by Neil Roberts A presentation of VkRunner which is a tool to help test the compiler in your Vulkan driver using simple high-level scripts. Perhaps the largest part of developing a modern graphics driver revolves around getting the compiler to generate the correct code. In order to achieve this, extensive …