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February 11, 2016February 11, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

Henes Broon T870 is a Kids’ Electric Car Controlled by an Android Tablet

If you ever wanted to played around with an electric car that’s a bit better than an RC toy, but don’t quite have the cash for a full-size Tesla model, Henes has designed an electric card for you your younger kids that’s controlled by an Android tablet and allows both manual and remote driving. Henes Broon T870 specifications: Tablet – 7″ Android 4.4.2 tablet PC smart system with HD resolution display, micro SD, HDMI and audio output ARM Cortex-M3 based main control system Bluetooth remote control Built-in stereo speakers Functioning hood & doors 4 wheel drive with high density urethane tires Spring suspension & shock absorbers Leather bucket seat and seat belt Foot pedal accelerator Bright Headlight / Aux Light / Turn Signal Light / Tail/Brake/BackUp Lights Motors – Dual 24V driving motors Battery – Rechargeable 24V 7Ah battery pack for a little over 2 hours drive, or up to […]

February 1, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

BayLibre ACME Cape for BeagleBone Black Measures Power and Temperature with Sigrok

Sigrok open source signal analysis software suite had a major release last week-end with libsigrok 0.4.0, libsigrokdecode 0.4.0, sigrok-cli 0.6.0, and PulseView 0.3.0. The new version added numerous bug fixes for supported hardware such as UNI-T UT61E digital multimeter or USBee AX Pro logic analyzer, and added support for several logic analyzers, oscilloscopes, multimeters, programmable power supplies, an electronic load, an LCR meter, a scale, and one BeagleBone Black cape, namely BayLibre ACME. The ACME initiative was launched in order to get rid of the limitations of proprietary solutions, and provide an open source hardware and software multi-channel power and temperature measurements solution to the community. BayLibre ACME cape supports up to 8 probes to measure VBUS (0 to +36V), VSHUNT ( 2.5uV up to 81.92mV), CURRENT AND POWER. Three current / power probes have been developed with all featuring TI INA226 for the ADC conversion: ACME HE10 Power Probe […]

January 23, 2016January 26, 2016 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

ACS712 Module Measures Currents up to 30A for as Low as $1 Shipped

Usually, if I buy a high power electric appliance, I like to double check it power consumption either with a Kill-a-watt when possible, and when not, e.g. cable directly hooked to the device or current intensity is too high, I use a digital electric clamp meter. Both methods are quite convenient as you don’t need to cut any wire to measure the current and determine the power consumption, but they don’t allow for data gathering since they don’t connect to the network. Earlier this week, I’ve come across a projects using ESP8266 for a mains energy monitor for a solar panel setup, and measuring mains current, electric meter, and gas meter. They use a photosensor to measure power consumption on their electric meter, which works, but may be problematic if the meter is on the street, and iSnail current sensor, using hall effect just like clamp meter, but instead of […]

January 21, 2016January 22, 2016 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

USB Power Delivery Advantages Explained (Video)

USB 3.0 and greater specifications not only promise higher speeds, up to 10Gbps for USB 3.1, but also the ability to deliver up to 100W over USB to power your laptop, display, and printer via equipment, usually a USB hub, that supports USB Power Delivery, or USB PD, via a USB Type C connector. So far very few products appear to support it, and I could only find the Macbook and ChromeBook Pixel, and a few USB PD chargers on Amazon. So basically in the future, the need for power supplies should decrease sharply, simplifying connections, and decreasing the cost of products and shipping since devices will only need a USB port that’s compatible with USB PD, meaning your computer, printer, and display won’t need an extra power supply as long as they consume less than 100 watts combined. The reasons I’m writing about this today, is that completely forgot […]

January 11, 2016January 11, 2016 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Multi-function Power Banks Can Jump Start Your Car Beside Charging Your Phone

Many people carry a USB power bank with them to make sure their smartphone does not run out of battery, but based on my experience failing to start your car because of a depleted or dead battery will bring ever more anxiety. Interestingly/funnily enough, while this happened to my neighbors last week-end, today I was informed that TM08 multi-function power bank was designed to both charge your phone or laptop, and help start your car. TM08 specifications: Input – 12V/1A Output – 5V-2A via USB and 12V jump starter for car with 200A starting current, and 400A peak current Battery Capacity – 12000mah Charging Time – 3 to 4 hours Life cycle – Over 1,000 cycles Dimensions – 130x70x25 mm Weight – 311 grams Operating Temperature – -20℃-85℃ The kit comes with adapters to charge your phone or other devices, as well as cables to connect to your car’s battery. […]

December 17, 2015December 17, 2015 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Why Do UL and CE Certifications Matter For Anything That Connects to the Mains (110V/220V) ?

I’ve been featuring a few cheap automation appliances such as Orvibo Wiwo S20 WiFi smart socket or lately Sonoff & Slampher WiFi and RF switch and lightbulb adapter, and people mentioned that Wiwo S20 socket was unlikely to be compliant with CE up to 10A since it lacked the ground pin, and I was also informed that Sonoff & Slampher was probably not compliant with UL certifications. Why does not matter? The picture below may give a clue… UL and CE certifications are used to make sure the device complies with safety regulations, and in some case make also improve reliability, as in UL compliant power supplies will feature inexpensive TVS device to protect against thunder. And if you think you are covered because you have an house insurance, it’s quite likely it will be void if the on-site expert find a non-compliant device on the site of the fire. […]

October 22, 2015 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Compulab fit-Uptime is a 12V mini UPS for Intel NUCs, fit-PCs, and More

Power failures can cause loss of data, or if you are unlucky even brick your devices, and for business users there may be a maintenance cost. UPS (Uninterruptible Power Supplies) prevent those issues by providing power when the mains fail, and while they are relatively inexpensive, they are quite bulky. That’s probably Compulab designed fit-Uptime a mini UPS taking 12 to 19V input and outputting 12V to keep mini PCs such as the company’s fit-PCs or Intel NUCs for a couple of hours. fit-Uptime specifications: Capacity – 18 watt hour Input: DC 12V to 19V Output on battery – DC 12V / 5A Output when powered – 12V to 19V (same as input) / 5A Battery – Lithium polymer built-in non-replaceable (good for up to three hours) Dimensions – 6.8 cm (l) x 8 cm (w) x 3.2 cm (h); Power jack: 5.5mm x 2.5mm barrel Weight – 240g The […]

October 5, 2015October 5, 2015 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

ATT7039AU Micro-controller Features an Energy Meter Unit for Power Meters

About two years ago, I purchased Northwest T8 power meter, and it worked fine for about three months, but one day the top plastic broke as as unplugged it, rubber bands prolonged its life for a few more weeks, but eventually the display stopped working, and keep it in my drawer for long while, until today, when I decided to have a closer look at how it was done. The PCB is called CZ-7039-B2, and the top includes the display, 4 user buttons, as well as JTAG through holes (P2) and 2.54mm header (P1) with TDO, TMS, GND and 3.3V signals, as well as a pin called P1600, but I still haven’t found out what it might be for. I’ve also taken the board out completely, to find out everything is basically handled by a single 48-pin chip called ATT7039AU. After a Google search, I quickly found out the chip […]