A Programmable LED dimmer from Soldernerd:
Around one and a half years ago I’ve designed and built various LED dimmers for both white and RGB LEDs. Then late last year someone approached me asking if I could make an RGB dimmer for him, too. But my designs were really tailored to their specific applications and built with home-made, i.e. milled PCBs which are time-consuming to make. So I decided to make a more universal version based on a proper, etched board which could be built in a small series and used for all kind of applications, both white and RGB. The result is this versatile, programmable 4-channel dimmer.
Programmable LED dimmer – [Link]
This project aims to
Control the intensity of the dimmable lighting appliances via a trailing edge dimmer.
Provide the user , ability to control lightsindependently and wirelessly over the Wi-Fi network and the Internet!
Multichannel Wireless Light Dimmer – [Link]
Graham Prophet @ eedesignnewseurope.com discuss about a new IoT board to the market.
Distributor Arrow Electronics has extended its range of IoT development boards with the SmartEverything Panther. The Panther board enables users to add pattern recognition capabilities to their products to allow them to recognise gestures, sound and vibration patterns and then to link them to the cloud via Wi-Fi for monitoring and control purposes.
Development board targets IoT and is Arduino compatible – [Link]
by Michael Irving @ newatlas.com:
The next big breakthrough for electronics is likely to be quantum computers, which will increase digitized memory capacity exponentially and allow scientists to start tackling problems that our classical computers have no hope of handling right now. Companies like IBM are starting to make some headway, but there are still plenty of hurdles to jump before practical quantum computers become a reality. A team from Aalto University in Finland may have cleared one of those obstacles, developing a nanoscale refrigerator to help cool components down.
Nanoscale refrigerator helps quantum computers keep their cool – [Link]
A tiny 32-bit Arduino compatible light, sound, & motion controller you can program yourself!
The Firecricket is an Arduino compatible light, sound, and motion controller featuring a 48MHz 32-bit ARM Cortex M0+ microcontroller w/ 16K of RAM, a MicroSD slot so you can store sound effects, bitmaps, and configuration files, a 2.5W audio amplifier, and an N-MOSFET w/ flyback diode for driving high current inductive loads, like vibration motors or 3W LEDs.
Firecricket – Bring your toys and costume props to life! – [Link]
Raspberry Pi is one of the most helpful innovations in the hardware industry. It has helped beginners and children learn programming and allowed the makers to develop powerful and cheap DIY projects. “ZeroPhone” is a new DIY smartphone that is built based on Raspberry Pi and cost about only $50.
ZeroPhone is an open source, Linux-powered smartphone, that has no carrier locks, bloated apps, or data mining. It is user-friendly and will have the typical features of a phone, but with more advanced features. It also can be modified and repaired easily.
The phone is built using widely available components, and its open source hardware and software will give you as much control over your phone as possible.
ZeroPhone can be used for calling and SMS, SSH, pen testing, and experimenting in addition to all basic functions like calendar, phonebook, music player, and web browser. As it is a linux-based phone, you can run ARM compatible programs. SDK will be provided so you can then develop your own apps.
Features & Specifications
- Based on Raspberry Pi Zero, ESP8266 and Arduino
- Has Wi-Fi, HDMI, full-size USB and a 3.5 mm jack (Bluetooth as an option)
- 2G GSM connectivity (3G coming soon)
- 128 x 64 1.3” OLED screen
- GSM/Wi-Fi/microphone hardware switch option
- RGB LED and vibromotor
- Uses of Extension Ports:
- IR receiver/transmitter
- Additional displays and buttons
- 5 MP / 8 MP Pi Camera
- Extended batteries
- Various sensors, both analog and digital
- Wireless radios for IoT
- GPS, Ethernet and MicroSD expansion
- …and much more.
The OS of ZerPhone is Raspbian Linux, which is currently based on Debian Jessie. This is because it is suitable for all functions, and will still be upgradable in the future. The user interface (controlling screen and buttons) is written in Python.
Compared with other open-source phones, ZeroPhone, as the maker said, is the only one uses affordable parts which are available on eBay, and its software will be always updated if the phone’s development will stop.
To make your ZeroPhone you will need:
- Pi Zero
- SIM800 modules
- Two-layer PCBs (two 4x10cm boards, one 4x6cm board)
- LCD screen
- TP4056 battery charger
- Buttons for keypad
- 2.54 headers
Although the power supply design is specific to the Brushless Servo Drivers mainly for IPM Modules, the concepts and circuit design may be used for any power supply requires high voltage output up to 400V DC and 5 Amps. The power supply is an unregulated design with an option to allow connection to either 120V or 230V mains and also it can work with lower voltage for audio amplifiers by increasing capacitor value. The design uses fully integrated bridge rectifier, and multiple bus capacitors for low ripple, noise suppression, and provides high current reservoirs. Additionally the dc supply line have bleeder resistor R2 and R3 to drain the large reservoir capacitors PCB, mounted fuse holder provided for short circuit and over current protections, low ohm NTC used for inrush current at power start up, C1, C12, TX protects against turn on/off spikes and EMI noise reduction. This power supply can be used to drive Tesla Coils, Induction heaters, DC Motor drivers, Brushless DC motor driver.
400V – 5A Power Supply For Brushless Motor Drivers – [Link]
Boris Landoni @ open-electronics.org presents his 32bit Arduino Compatible board which has some nice features on board. He wrties:
Our prototyping board acquires a 32-bit processor and sets the bar high, towards demanding applications that may take full advantage of the WiFi support, of the RTC and of the SD-Card, that make Fishino stand out from the common Arduino UNO. Second installment.
A 32-BIT FISHINO board with WiFi, SD card, RTC, audio codec, LiPo and more – [Link]
Chip McClelland @ hackster.io published his solar li-po battery charger based on MCP73871 to manage the solar and DC charging of the LiPo battery, TPS63020 Buck-Boost Converter and Maxim 74043 LiPo Fuel Gauge. He writes:
I build connected sensor which are often deployed in local parks where there is no access to utility power. Over the past couple years, I have been refining and testing my solar power modules and have arrived at this compact integrated design. I have a number of these deployed and they have been in continuous service for up to two years. I wanted to share this design in case it might be helpful for your projects. I would also greatly appreciate any input or suggestions on this design so v3 will be even better.
Solar Power Module v2 – [Link]