VFD Modular Clock IV-18 SMT edition is a special solder-free kit version of the original VFD Modular Clock . The firmware is mbed based and is freely available at http://developer.mbed.org/teams/Akafugu/code/vfd_modular_clock_mbed/
- IV-18 8-digit Russian VFD Display Tube
- Open source mbed based firmware
- LPC1347 ARM Cortex-M3 64kb microcontroller
- GPS (option)
- Four Letter Word
- Easy to update firmware with no special drivers required (LPC1347 usb bootloader)
VFD Modular Clock IV-18 SMT – [Link]
EEVblog #684 – Ness SMT Manufacturing & Assembly Factory Tour – [Link]
With a height of only 4.5 mm are new terminal blocks able to connect LED modules and LED panels aesthetically and with a maximal reliability.
There are numerous SMT connectors on the market, which are suitable for usage on LED panels but even in other applications. That´s why it´s a logic question – why just Wago 2060?
Firstly it is because of a sophisticated construction of a terminal block with a globally known and million times proven screwless spring clamp CageClampS. This clamp has an optimum pressure on a wire ideally responding to a wire diameter, i.e. the thicker wire, the bigger pressure. Also thanks to this is the max. allowed current up to 9A (!). Further, it´s possible to install solid and ferruled wires even without tools. By a simple pressing to a terminal block (for example by a screwdriver), it´s possible to insert even fine stranded flexible leads and by similar way also to disengage. Features of a clamp don´t get worse neither after multiple disengaging of a connection and they remain stable even after a long period of operation.
From other positives it´s necessary to mention a “balcony” construction of an input portion, which makes installation of wires easier and faster. Sufficiently big flat area ensures a reliable application on assembly machines (pick-n-place). And finally – an aesthetic curved shape and a white/cream color cause, that connectors are inconspicuous and they don´t disturb on a PCB.
Terminal blocks are available in 1,2 and 3-pole version. You needn´t be in doubt that you missed development and you still don´t know a circuit operating on 1 pole – naturally the single-pole version is intended for connecting of several modules into series. A big plus is also availability of interconnecting both-sided pins enabling easy and aesthetic creation of a row (string) of several modules.
Pin spacing is 4mm and there´s also available a version with 8mm pin spacing with operating voltage of up to 600V. Connector casing is made of an advanced material (glass fibre reinforced PPA) with a very wide range of operating temperatures.
Novelty is also a newer version – Wago 2061 with up to 12A max. current. Detailed information will provide you the Wago 2060 brochure.
Wago 2060 terminal blocks don’t overtop LEDs – [Link]
by Graham Prophet @ edn.com:
STMicroelectronics has announced limited production of its EnFilm advanced rechargeable batteries that are less than 0.25 mm thick. These paper-thin batteries free designers from the constraints of standard battery sizes for personal technology and Internet of Things (IoT) devices.
At 220µm thick and measuring 25.7 x 25.7 mm, ST’s EFL700A39 EnFilm solid-state lithium thin-film battery is suited for use in ultra-low-profile devices. Surface-mount terminals allow direct attachment to the circuit board, which simplifies assembly and eliminates wires and connectors. Optional tape-and-reel packaging allows high-speed automated placement.
EnFilm – rechargeable solid state lithium thin film battery – [Link]
Just a short video to show how I hand solder a ceramic leadless chip carrier (CLCC) package to a circuit board, in this case, a Si570. Typical surface mount soldering techniques, including the use of flux, fine gauge solder, and a fine tipped iron.
How to solder a leadless ceramic surface mount package – [Link]
by Dave Young
Anyone who has learned a layout package like EAGLE and sent a board off to a fab knows the trepidation felt when submitting the final gerbers. It doesn’t matter if the order is for 3 PCBs or 3,000 PCBs. The time lost from an error can ruin a project’s momentum, especially if it is a boneheaded error.
There is a better way to check all of the footprints with a layout: Paper PCB Protos. This low-tech technique only takes an hour, but can provide 100% confidence in the footprints checked. Thanks to proper scaling of the PCB, it is possible to create a PDF and print out an exact representation of the board. The designer can then place parts on the paper to quickly determine if a component’s footprint will be suitable, at least for a pilot production build.
Using Paper Protos to Check Footprints with EAGLE – [Link]
Instructions for Soldering and Desoldering SMDs featuring up-close shots of fine-pitch soldering.
Surface Mount Soldering 101 – [Link]
An Arduino-compatible smart outlet designed to instantly turn your toaster oven into a reflow soldering station.
Advances in technology continue to shrink the size of components. Hobbyists, who have traditionally worked with through-hole parts, are finding these parts harder and harder to come by as more parts become unavailable in through-hole variants.
Soldering surface mount components with a soldering iron, while possible, can be a rather tedious task. In particular, when you’re working with densely packed pins like those of a microcontroller, hand soldering a board quickly becomes a daunting task.
Reflowster – Soldering Controller for Surface Mount PCBs – [Link]
This is a walk-through for making cheap high quality SMD metal stencils at home, using commonly available materials.
DIY home-made SMT metal stencil – [Link]
Don´t let yourself get confused by miniature dimensions – small SMT LEDs produce surprisingly strong light.
SMT LEDs enjoy a big popularity because of their size but also thanks to a fast and simple assembly to PCB on automatic machines. In comparison to wire-leaded types, a vast majority of SMT LEDs doesn´t contain optics, thus radiating in a wide beam angle. That´s why is their light visible even from wide viewing angles and at the same time it enables to easily reach a uniform backlight of panels, displays, …
From the smallest SMT LEDs you can find in our store sizes „0603“ (KP-1608) and „0805“ (KP2012) from company Kingbright. Particularly in the Kingbright. Particularly in the KP-2012 series can be found several types with a luminous intensity in the order of hundreds mCd. A novelty in the Kingbright portfolio are series SR-J4 (640 nm – red) and series ZGK (525 nm – green) comprising LEDs of various dimensions. For example the new type KP-2012SRC-J4 (640 nm) has a luminous intensity of up to 600 mCd (@20mA).
In general, all KP series LEDs are low-profile (thin), but at extreme space requirements, the solution exists in an ultra-thin version KPT (only 0.75 mm height – KPT2012).
Naturally, it´s not always necessary to have a high light output (for example at indoor usage), that´s why at several types can be found a version with a higher and also with a lower luminous intensity, what is usually also reflected in a price of a given type. In stock we keep the most requested types suitable for majority of applications. Should you have interest in types which we don´t keep in stock, please don´t hesitate to contact us at email@example.com.
Small but powerful LED series KP- 2012 – [Link]