Large-Board LED Screen Printer from ESE — Printing Small PCB



ESE high-precision LED screen printers are specially designed to handle large board sizes up to 1500 x 700 mm (59.05 x 27.56 in).

The printers can also handle PCBs as small as 100 x 100 mm (3.93 x 3.93 in).

All major components of ESE screen printers — including the printing table, camera and squeegee — are controlled by high-precision servo motors instead of stepping motors and belts, for consistently higher accuracy.

The ESE printing table is supported by four ball screws and three LM guides. This design allows uniform squeegee pressure across the entire width of the table, and a printing accuracy of 12.5 microns.

The ESE printing-table conveyor system does not have a fixed rail as with conventional printers.

Instead, adjustable front and rear rails position the PCB directly over the center of the table, allowing consistent, high-precision printing for components down to 0201 (0603 metric) and pitches to 0.012 in. (0.3 mm).

A Cognex vision system features an up-down CCD camera and four LED rings — three for the PCB and one for the stencil — for fast, accurate recognition of PCB and stencil fiducial marks.

Automatic 2-D paste inspection is standard.

A closed-loop feedback option allows automatic adjustment of printing registration by a downstream SPI (solder-paste inspection) system.

The ESE under-stencil cleaning system features programmable wet, dry, vacuum and air-blow modes, for fast, thorough cleaning. A programmable paper saver reduces paper costs.

ESE screen printers are exclusively distributed in the Americas by Equipment Services LLC.

https://www.eslsmt.com/ese-screen-printers/led-screen-printers

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Low Cost Platform Allows for Prototyping Wearables with more confidence

Wearable technologies are acquiring inroads into vertical markets such as health related, industrial, and vehicle sectors.

Wearable technologies are seeking out inroads into vertical markets for example healthcare, industrial, and vehicle sectors. For instance, special vehicle-health applications that check fuel efficiency, vehicle speed, and the heart rhythm of a fatigue driver are being created by Nissan, BMW, and Mercedes vehicle producers. The buying price of wearable products development boards varies from low priced to extremely highly-priced. Adafruit has generated a great value wearable platform named the Flora(https://www.adafruit.com/product/659) were special electronic modules have been manufactured to work together with the microcontroller-based maker board. In this posting, I’ll visit the Flora’s system framework utilizing block, circuit schematic diagrams, and its PCB design. Aside from that, to underscore the advantage in prototyping wearable device concepts, I’ll present you with a mini how-to guideline on electrical wiring and testing a GPS (Global Positioning System) module with the Flora.

In checking out the Adafruit Flora I found the wearable device to be made from a handful of subcircuits wired to an 8-bit microcontroller attached to a compact circular PCB (Printed Circuit Board). An Atmel ATMEGA32 microcontroller provides the processing power for the Flora, supplying 6 digital pins, two communication pins, and also two serial control lines. All of these digital pins and control lines are open to producers, developers, and engineers by half circle solder pads that revolve around the Flora’s boundary. What’s more, a reset key, mini USB, dual regulated power source (3.3V/5Volt supplies), and three LEDs (transmit, receive, and power supply standing) complete the Flora’s system architecture.

Adafruit presents all of the Eagle Cad circuit schematic diagrams and PCB layout drawings for engineers, designers, and also producers eager about trying out the mechanical packaging and electronic designs of the Flora on their own github web page.

Gather more information
https://www.designnews.com/electronics-test/low-cost-platform-allows-prototyping-wearables-ease/71517114347228

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