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December 29, 2021December 29, 2021 by Sponsored Post - 10 Comments

10,000 mAh Graphene power bank fully charges in 27 minutes (Sponsored)

Most power banks are made of Lithium batteries that charge in 3 to 4 hours and are good for around 500 charge cycles. But Elecjet Apollo Ultra is a different beast equipped with a 10,000 mAh Graphene battery that enables fast charging in just 27 minutes and offers a much longer lifespan with over 2,500 charge cycles. In other words that means Apollo Ultra power bank is 5x faster and lasts 5x longer than most lithium-based power banks. Another way to look at it is that this graphene-enhanced 10,000mAh power bank can gather enough power in just 7 minutes to fully charge your phone. It can fast-charge your phone up to three times, charge two devices at once, and passthrough charging lets you charge Apollo Ultra at the same time. Elecjet Apollo Ultra specifications: Battery Capacity – 10,000 mAh or 40 Wh Full Charge Time – 27 minutes USB ports […]

December 15, 2021September 14, 2022 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

RIDEN RD6012P USB and WiFi DC power supply connects to your PC or smartphone

Bench DC power supplies are usually adjusted with some buttons and rotary encoders, but RIDEN RD6012P DC power supply can be controlled from your PC via USB, and there’s RD6012P-W model that adds a WiFi module to adjust parameters from a smartphone running Android or iOS. Besides the “smart” functions, the bench power supply supports 0V to 60V voltage range and up to 12A current for a maximum of 720W output power and comes with an HD color display with 5 digits for each voltage, current, and power measurement, and a setup menu. RIDEN RD6012P(-W) power supply specifications: Display – 2.4-inch color HD display with adjustable brightness Host interface – Micro USB port and optional WiFi module (fitted to RD6012P-W model) Input voltage – 7 – 70.00V with 0.01V resolution, ±(1% + 5 digits) accuracy Output voltage – 0 – 60.000V with 0.001V resolution, ±(0.5‰ + 4 digits) accuracy Output […]

December 9, 2021December 13, 2021 by Jean-Luc Aufranc (CNXSoft) - 34 Comments

A deep dive into Raspberry Pi Zero 2 W’s power consumption

Raspberry Pi Zero 2 W Power Consumption measurements with Otii Arc

When I completed my review of Raspberry Pi Zero 2 W, I mentioned I would test the power consumption of the board later. It took a while, but I’ve finally come around it using Otii Arc from Qoitech and Otii software to provide some pretty power consumption charts, and even energy consumption. Since the Raspberry Pi Foundation recommends a 5V/2.5A power supply, I’ll first try to get as close as possible as 2.5A, then I’ll go through tricks to reduce idle power consumption to less than 75 mA / 375 mW, and finally check the energy consumption under various CPU core count and frequency. Raspberry Pi Zero 2 W Power consumption under load, with accessories I started with the latest Raspberry Pi OS Lite “Bullseye” image and connected my Raspberry Pi Zero 2 W board to Qoitech Otii Arc tools as shown below. It used to cost around $500, but […]

November 23, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

SONOFF releases HTTP API for SPM-Main power meter

SPM-Main is the main unit of Sonoff Smart Stackable Power Meter using RS485 to provide up to 128 relays. Besides support for the eWelink mobile app, we were promised an HTTP API at the time of the launch in September 2021. ITEAD kept its promises and has now released the HTTP API for the SPM-Main smart power meter to allow IoT home automation users and developers to control SONOFF devices via existing home automation open-source platform or local HTTP client. It’s the same REST API used for SONOFF MINI & R3 smart switches, but it adds support for power monitoring as well. The API allows you to switch between eWelink and DIY modes as needed, and provides the following functions: Device Status Broadcast – Returns the switch status of all channels with current, voltage, power, overload status, RS485 communication status, and more Get the List of Sub-device – List of […]

October 25, 2021 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

Smart Power 3 – A $45 smart power analysis tool for embedded systems developers

Hardkernel has launched a number of popular Arm SBC’s with the ODROID family over the years, but the Smart Power 3 is a different type of product, as the ESP32-based smart power meter can help embedded systems engineers optimize their hardware and software power consumption and/or check for spurious power peaks during boot up or shutdowns. In the past, we’ve reviewed relatively expansive tools like Qoitech Otii Arc or gone the DIY route, but at $45, Hardkernel offers a power monitoring solution that’s both inexpensive and easy to use, albeit with fewer features than Qoitech’s device. Smart Power 3 specifications: MCU – ESP32 dual-core microcontroller via ESP32-WROOM-32E module Output Channels – 2x output channels (Max 50W + 50W) via 2x 4mm banana jacks each Output Voltage – 3V DC to input voltage – 1V Output Current – 3A max per channel Measurement Voltage, Current, Power Maximum sampling rate: 200Hz (5msec […]

October 7, 2021February 4, 2022 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

WattUp 1W active energy harvesting developer kit enables at-a-distance wireless charging

WattUp 1W Active Energy Harvesting Transmitter

Two years ago, we noted Energous’ WattUp hearables developer kit that would charge earbuds with the company’s WattUp near-field wireless charging technology. The company has now introduced the WattUP 1W active energy harvesting developer kit capable of charging multiple IoT devices with at-a-distance wireless charging. The kit is said to be “active” because there’s a 6-inch transmitter, let’s call it a power gateway, and several IoT devices that harvest energy from it. Traditional passive solutions will harvest ambient energy from the surrounding environment, and may not deliver enough power, and do so unpredictably. The developer kit comes with the transmitter, plus one or more receiver units, and relies on the following main chips: Transmitter Dialog Semiconductor DA14682 SmartBond Bluetooth 5.0 Cortex-M0 SoC Dialog Semiconductor DA4100 Wireless Power Transmitter SoC Dialog Semiconductor DA3210 1W Power Amplifier A discrete rectifier and a DA2210 WPT rectifier Receiver(s) Dialog Semiconductor DA14531 Cortex-M0+ BLE 5.1 […]

September 25, 2021September 29, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

SONOFF Smart Stackable Power Meter supports up to 128 20A relays

ITEAD has introduced many smart switches over the year under the SONOFF brand, and their latest SONOFF Smart Stackable Power Meter is DIN mountable and made for larger industrial applications with up to 128 devices. The solution is comprised of the “SPM-Main” WiFi connected main unit controlling up to 32 “SPM-4Relay” units with 4 relays each using RS485 daisy-chaining. SPM-Main specifications: Storage – MicroSD card slot up to 32GB to store up to 180 days of energy usage data Connectivity Ethernet 2.4 GHz 802.11b/g/n WiFi 4 RS485 master Power Input – 100-240V 50/60Hz up to 50mA max Dimensions – 142.5 x 90 x 66.5 mm (PC V0 material) SPM-4Relay specifications: Connectivity – RS485 Power Input – 100-240V 50/60Hz up to 20A per relay, 80A total Power Output – 100-240V 50/60Hz up to 20A per relay, 80A total Safety – Current, voltage, and power overload protection with delay function from 0 […]

August 1, 2021 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

SmartBug smart switch integrates neatly into in-wall sockets (Crowdfunding)

SmartBug is a smart switch based on ESP32 wireless SoC, equipped with several sensors to measure temperature, humidity, power usage, and listen to sounds. It is designed to fit neatly into most in-wall sockets found around the world. Each SmartBug relies on mesh networking to communicate with each other and extend the range, WiFi for Internet connection, and Bluetooth low energy (BLE) to control additional devices without the need for any additional hub. SmartBug’s key features: MCU – 32-bit dual-core microcontroller with WiFi, wireless mesh, Bluetooth LE Connectivity 2.4GHz WiFI 4 Wireless mesh to let SmartBug act as a signal repeater Bluetooth 4.0 and BLE to control home appliances Audio Digital microphone for voices commands, baby crying (only enable if the plugin is downloaded in the app). Buzzer On-Off Relay up to 2200W, both AC and DC. Sensors – Temperature & humidity sensor, built-in power meter (current, voltage, and power) […]