It a video of making of Balancing Robot Electronic part on a single PCB. This robot is been made using Arduino pro mini, MPU 6050, Motor driver IC L298D, Voltage Regulator LM7805 and some other basic electronic components.


Internet of Things PCB considerations for Startups

Considering the fact that IoT appliances are so new, you would assume that getting an IoT printed circuit board (PCB) project off the ground starts by reinventing the wheel and suffering from a great deal of technical complications. This is far from the truth.
However it doesn’t imply IoT startups have a apparent path to stardom. Facing them is a number of design and manufacturing concerns which are unique to these small products. These things to consider need to be taken into consideration for the new IoT device to be successful.

On the plus side, it’s a consideration for IoT startups to know that the basic foundation for a successful cool product exists. What this means is experience and knowledge concerning the design, fabrication and assembly of these cutting-edge products are obtainable. Also, the best advice is for prudent IoT product business people and forerunners to follow the recommendations that skilled electronics manufacturing services or EMS companies provide. These companies and also their engineering employees have already completed this work with groundbreaking IoT corporations in Silicon Valley participating in the first stages of this rising industry.

The PCB of an IoT device is a special beast than the traditional one, which is much larger and flat. IoT devices, in comparison, are made up generally of either rigid-flex or flex circuit assemblies, which come with their own categories of design layout, fabrication and assembly things to consider and intricacies.


A top thing to consider is to search for skilled designers who have undertaken quite a lot of rigid-flex PCB designs. PCB space for an IoT device is tight. So you want the designer to have firsthand layout practical experience to correctly design key elements on that small space.

Besides that, most IoT gadgets are not stationary; they incur substantial movement and folding. Right here, the skilled designer plays a key role in working out bend ratios and lifecycle iterations as a important part of a design. Additional key design layout things to consider comprise signal trace thickness, number of rigid and flex circuit layers, copper weight and stiffener placement. Stiffeners are used on flex circuits to be certain that elements mounted on the flex circuit stay tightly in place to stop movement.

One additional aspect to consider is through-hole element placement in rigid-flex circuits. What makes that significant? A great deal of IoT devices are based on surface mount device placement. However , there can be through-hole elements, which are typically attached to either the rigid section or the flex portion of the board. Through-hole elements are in general useful to communicate input/output or I/O signals to the outer world. Like that, those signals can show up having an LCD or LED monitor. Through-hole element placement is a crucial thing to consider in an IoT device since when utilized on the flex part of the board, proper stiffeners ought to be designed and employed for appropriate assembly.

Then finally in the layout category, the high temperature that elements deliver is required to be deemed. IoT gadgets are increasingly challenging with rigid-flex and flex circuits featuring up to 12 to 14 layers. Several gadgets are digital. However , increasingly more analog systems are being utilized in IoT systems. Analog circuitry makes far more heat than digital ones. This suggests heat expansion and contraction rate should be considered. In tech lingo, it is known as the Coefficient of Thermal Expansion or CTE and the proper treatments for it.


Selecting the best fabricator is important and is linked to the EMS firm you have chosen. The fabricator you expect needs to have IoT PCB fabrication experience. Among key things to consider here are making sure robust adhesions in between layers on both rigid and flex circuit sides, understanding all the essential calculations and possessing a strong comprehension of when current moves from the rigid side to the flex side.

These fabricators also must get an in-depth know-how about tremendously tiny parts for instance 0201 and also 00105 device packages, package-on-package, and the use of fine-pitch ball-grid array or BGA packaged devices.

They also need to have knowledge of designing boards with fairly tight tolerances in terms of footprint for those types of BGA devices, in terms of up-to-date capabilities like laser direct imaging for putting the solder mask on the board. They need to have laser drills for via drilling with sizes of 5 mils or under since these IoT products could be so tiny that a common drill size of 5 to 8 mils may well not be all you need. They may require to go to a 3 mil, which means that you have to have an cutting-edge laser drilling capability on-site.

If you’re placing via-in-pad, it’s a easy way to take advantage of the small land which is available on the rigid-flex board, nevertheless , it produces difficulties for assembly. If vias are not fully planar or flat in shape, it will be hard through the assembly of those tiny BGA packaged devices. That’s because non-planar surfaces may threaten the integrity of solder joints.

At times via in pads leave bumps in cases where they’re not scoured properly after positioning the vias and gold finish at the top. When there are bumps, then the solder joints in the assembly for those tiny BGA balls in those IoT devices wouldn’t be an excellent joint. It could create spotty connections, which can be a larger issue to treat and remedy. It all boils down to which EMS firm you are using because they’re the ones who will pick the fabrication facility to make a successful IoT product for you.

PCB Assembly

It’s crucial to head off to skilled EMS companies that have effectively assembled IoT and wearable PCBs since they have specialized tooling and fixtures readily obtainable, which are essential for assembly to make sure components are placed appropriately, precisely and the printing is completed effectively.

Printing can be a problem for IoT systems. If it’s a rigid-flex board, then you can find a difference between thicknesses of the rigid and flex circuit portions, which means a special fixture is required to retain the complete rigid-flex board planar or absolutely flat to allow effective printing to be carried out.

Startups should be all set to choose the correct manufacturing partners and EMS companies. In this manner they can make sure they’ve ample experience upfront to get the multitude of design, fabrication and assembly details effectively performed since they are essential to a triumphant and timely IoT product release.