The Alpha Geek – Geeking Out

DonLuc

Technology Experience -Single-Board Microcontrollers (PIC, Arduino, Raspberry Pi, Espressif, etc...) -Robotics -Research & Development (R & D) -Desktop Applications (Windows, OSX, Linux, Multi-OS, Multi-Tier, etc...) -Mobile Applications (Android, iOS, Blackberry, Windows Mobile, Windows CE, etc...) -Web Applications (LAMP, Scripting, Java, ASP, ASP.NET, RoR, Wakanda, etc...) -Social Media Programming & Integration (Facebook, Twitter, YouTube, Pinterest, etc...) -Content Management Systems (Wordpress, Drupal, Joomla, Moodle, etc...) -Bulletin Boards (phpBB, SMF, Vanilla, jobberBase, etc...) -eCommerce (WooCommerce, OSCommerce, ZenCart, PayPal Shopping Cart, etc...) Instructor -PIC Microcontrollers -Arduino -Raspberry Pi -Espressif -Robotics -DOS, Windows, OSX, Linux, iOS, Android, Multi-OS -Linux-Apache-PHP-MySQL Follow Us J. Luc Paquin – Curriculum Vitae http://www.donluc.com/DLE/LucPaquinCVEngMk2021a.pdf Web: http://www.donluc.com/ Web: http://www.jlpconsultants.com/ Web: http://www.donluc.com/DLE/ Web: http://www.donluc.com/DLHackster/ Web: https://www.hackster.io/neosteam-labs Patreon: https://www.patreon.com/DonLucElectronics Facebook: https://www.facebook.com/neosteam.labs.9/ YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA Twitter: https://twitter.com/labs_steam Pinterest: https://www.pinterest.com/NeoSteamLabs/ Instagram: https://www.instagram.com/neosteamlabs/ Don Luc

SparkFun – Electrolytic Decoupling Capacitors – 100uF/25V

SparkFun COM-00096 Mk01

SparkFun COM-00096 Mk02

SparkFun COM-00096 Mk03

SparkFun: COM-00096

Description: Electrolytic decoupling capacitors 100uF/25V. These capacitors are great transient/surge suppressors. Attach one between the power and ground of your project to ensure smooth power delivery. High quality radial electrolytic capacitors.

Don Luc

SparkFun – Electrolytic Decoupling Capacitors – 10uF/25V

SparkFun COM-00523 Mk01

SparkFun COM-00523 Mk02

SparkFun COM-00523 Mk03

SparkFun: COM-00523

Description: Low-profile electrolytic decoupling capacitors 10uF/25V. These capacitors are great transient/surge suppressors and work well as charge pump caps for MAX232 circuits. High quality radial electrolytic capacitors.

Don Luc

SparkFun – ProtoBoard – Rectangle Wired 3″

SparkFun PRT-08812 Mk01

SparkFun PRT-08812 Mk02

SparkFun PRT-08812 Mk03

SparkFun: PRT-08812

Description: This is a different kind of perf board. 3″ long and 2″ wide, the holes are plated through and PCB is double sided like you would expect. All holes are routed together on both sides. The really neat thing about this board is every pad has a 20mil width trace connecting to every other pad. Every pad is shorted together! This actually speeds up prototyping because instead of having to wire from one point to another, you simply cut the traces to isolate the route or pad you want to use. Your board will look a lot better and be more robust without lots of point to point wires to interfere. Standard 0.1″ spacing with a 4-40 (3mm) holes for mounting. Great for quickly prototyping stackable circuits.

Don Luc

SparkFun – Resettable Fuse PTC

SparkFun COM-08357 Mk01

SparkFun COM-08357 Mk02

SparkFun COM-08357 Mk03

SparkFun: COM-08357

Description: This is a handy little device that can save your system from smoking. A resettable fuse (also known as a PTC) is a resistor that has very unique properties.

For this model, if your circuit tries to draw more than 250mA of current (if you have a bad short for instance) the PTC would ‘trip’ (by heating up). The increased resistance (trip state) would break the circuit and allow only a small leakage current.

The leakage current may still be enough to hurt some electronics but it’s much less than the 3A that the short may have allowed. Removing the short, the PTC ‘resets’ and allows current up to 250mA to flow again. It’s a resettable fuse that protects your system! Good for use on battery powered devices that need to protect again high-current accidental discharges.

The thermal pictures to the right do a great job of showing what happens when the PTC is tripped. The first thermal picture shows a voltage regulating circuit in its normal state. In the second picture the circuit is shorted, notice how hot the PTC gets (213 °F!) as it limits the amount of damaging current going through the circuit. Major thanks to Joshua Weaver for the great thermal shots!

Don Luc

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