LED driver simplifies dimming control

A dual-channel step-down LED driver, the LT3964 from Linear Technology packs 40 V, 1.6 A power switches and an I2C interface for dimming control. [via]

Operating over an input voltage range of 4 V to 36 V, the driver integrates two independently controlled LED drivers that switch at up to 2 MHz. Synchronous operation results in efficiencies above 94% with both channels at full current load.

LED driver simplifies dimming control – [Link]

The Factors That Determine PCB Assembly Pricing

This is a sponsored post discussing about PCB assembly costs factors on Bittele Electronics.

Bittele Electronics has developed its pricing schedule based on various factors that determine PCB assembly costs. Some of our customers call us to better understand the factors involved assembly pricing. In general, the factors that cause pricing differences include PCB dimensions, part types and quantities, soldering methodology, type of inspections, etc.

Pricing changes often depend upon the quantity of parts to be assembled on a PCB as well as the type of parts. Component types and the technology selected by the customer also determine our final pricing. Other things that impact pricing include, through-hole components, SMDs, and fine pitch, leadless or BGA devices.

There are substantial price increases if you specify double-sided assembly. This is because the assembly process will need to be repeated to place parts on both sides of the board. The double-sided assembly process also includes extra solder stencil production, SMT equipment programming, etc., which can add costs to the average assembly charge. Nonetheless, Bittele attempts to charge reasonable prices along with lead-free assembly by considering all these factors in our prices.

Bittele offers lead-free assembly based upon the customer’s specifications. We possess two additional production lines dedicated to lead-free assembly. We employ RoHS-compliant, state-of-the-art soldering methods. Lead-free assembly may result in prices changes, however. You can obtain the actual costs by contacting one of our sales representatives.

The type and size of parts that you select will also determine the final PCB assembly cost. Charges may also change if you specify lead-less parts, such as BGA, QFN, etc. In addition, costs may vary with package sizes (e.g., 0201, 1206, etc.) as well as the inspection methods you specify.

Bittele has a variety of inspection methods, including in-circuit and functional tests, available to ensure high quality PCBs. We are capable of the following tests: visual inspection for basic quality verifications, x-ray testing for lead-less devices and blank PCBs, AOI inspections to test solder paste applications, missing components, and polarity. Our inspections are completed without additional charges.

Nevma: Gesture Control for the Masses

Nevma is a simple to build, program and utilize device that translates your hand gestures into keyboard and mouse input. Just plug it in your USB port and magically wave through your presentations, documents, pictures, songs and the like. by Dimitris Platis @ instructables.com

Working at Delphi (soon Aptiv) allows me the luxury of being immersed in a high-tech and innovative environment that provides constant inspiration for creating new and exciting gadgets. One day, some colleagues mentioned gesture control being one of the recent trends in automotive. This got me thinking of ways to bring gesture control to the broader audience in an affordable and easy to use package. And thus, Nevma was born.

Nevma: Gesture Control for the Masses – [Link]

ECE 4760 Designing with Microcontrollers – 2017 Final Projects

Students in Cornell ece4760 spend 5 weeks building a PIC32 project that they specify and design. This year projects included an automatic steak cooker, an ice cream topping machine, a beer-pong robot, various musical instruments and games, a braille reader, a Motor Dynamometer, and an LED strip clock. Youtube playlist here.

ECE 4760 Designing with Microcontrollers – 2017 Final Projects – [Link]

Module provides BLE connectivity between tablets and cloud

by Alice Matthews@ electronicspecifier.com discuss about MBN52832 a BLE module:

A Nordic-based BLE module has been released by Murata. The latest MBN52832 device consists of Nordic Semiconductor’s nRF52832 IC, a 32MHz crystal for timing, and an on-board antenna. Additionally, it contains pins for an off-board omni-directional antenna and a NFC antenna. The module provides a Serial Port Interface (SPI) and UART interface to Nordic’s nRF52832 ARM Cortex M4 processor.

Module provides BLE connectivity between tablets and cloud – [Link]

NanoEVB & PicoEVB – Xilinx Artix Developemtn kits

The Xilinx Artix dev kits that fit in your laptop. A convenient, affordable way to explore Xilinx PCIe IP. The project is already funded on crowdsupply.com

PicoEVB is an affordable, open source, development board which can be used to evaluate and prototype PCI Express designs using a Xilinx Artix 7 FPGA on Windows or Linux hosts. The boards are designed around the Artix 7 (XC7A50T).

NanoEVB & PicoEVB – Xilinx Artix Developemtn kits – [Link]

Photoelectric Defuse Sensor using S8119

This is an industrial grade defuse photoelectric sensor module which is based on Optical IC S8119 from HAMAMATSU. A diffuse reflection sensor is used for the direct detection of an object. The defuse reflective sensor project consists of an Infra-RED LED and receiver. The IC also provides output pulses to the IR LED which emits IR- light which is reflected by the object to be detected and seen by the S8119 IC. Both the emitter LED and receiver sensor are placed on same PCB and are configured for light to be reflected back to the sensor.

Photoelectric Defuse Sensor using S8119 – [Link]

Sculpto+, An Affordable User-Friendly Wireless 3D Printer

Two years ago, the Sculpto 3D printer appeared to make 3D printing more affordable and user-friendly for everyone. Recently, the new version Sculpto+ came with more useful features, making it a unique printer with the same printing area and price range.

The Sculpto+ printer is a compact printer for beginners, kids and adults to start with 3D printing in a simple way. In addition to small size and lightweight, it provides a high printing performance with very low noise while working. It’s also connected wirelessly with a very easy-to-use app which makes the printing process simple and fast. We got the chance to try the printer in our lab and share our thoughts and experiences with you. The first thought we had while unboxed it is that the printer is compact enough to fit our desk and the construction quality was amazing. The design is solid and precise at the same time. (more…)

liteSOM – ARM Cortex A7 System On Module

liteSOM is an extremely low-power, state-of-the-art module based on ARM Cortex-A7 Core i.MX 6UltraLite processor. SO-DIMM form factor makes it easy to embed to your device without any technical issues. The module is designed to operate with all major OS. It is preconfigured for Linux. With a rich set of peripherals the module is designed to cater for a wide range of applications.

Further documentation is available on the datasheet here.

Specifications:

  • Processor: i.MX 6UltraLite, 528 MHz, ARM® Cortex®-A7 Core
  • RAM: up to 512MB
  • eMMC: 2GB
  • Power supply: Single 3.3V DC
  • Size: 67.6mm x 26.5mm x 3mm
  • Temperature range: 0˚C to 70 ˚C or -40 ˚C to 85 ˚C
  • OS support: Linux, Brillo
  • Graphics: Parallel LCD Display up to WXGA (1366×768)
  • Interfaces: 2x 10/100Ethernet, 2x USB2.0 OTG, 2x CAN, 8x UART,4x SPI, 4x I2C, 3x I2S
  • Camera interface: 8/10/16/24-bit Parallel Camera Sensor Interface
  • Security: Crypto Engine (AES with DPA, TDES/SHA/RSA), Tamper Monitor, Secure Boot, SIMV2/EVMSIM X 2, OTF DRAM Encryption

ESP32-PICO-KIT Development Board

ESP32-PICO-KIT V3 is a mini development board based on the ESP32-PICO-D4 SIP module produced by Espressif. All the IO signals and system power on ESP32-PICO-D4 are led out through two standard 20 pin x 0.1″ pitch headers on both sides for easy interfacing. The development board integrates a USB-UART Bridge circuit, allowing the developers to connect the development board to a PC’s USB port for downloads and debugging. The board is available for $10 here.

Features:

  • 3.3V power regulator – AMS1117-3.3V
  • USB-TTL serial Bridge – CP2102
  • Auto reset circuit, arduino IDE compatible.
  • On Board ESP32 PICO IC and antenna
  • EN and Boot buttons, on board power indicator LED.