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Walid Issa

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  1. Hi, I would like to share with you my project Pika Power Board. It is a power supply but it saves you from a lot of headahce, cheaper than multi power supplies and breadboard compatible. You will find it on Crowd Supply now: https://www.crowdsupply.com/tikstation/pika-power-board https://youtu.be/eHCbHEMIN-c Features The board accepts various input choices: USB-C (5-20V), Standard USB (5V), Li-ion Battery (3.7V and higher), Lead Acid Battery (6V to 24V) It provides multiple outputs at the same time with different polarity as (3.3V, 5V, +12V, -12V and adjustable) You can get two adjustable outputs It can supply loads with a high current reaching 1.5A It provides short circuit protection and overheating protection It ensures uniform thermal distribution for less heating and prolonged life Wide input range 3.3V-25V from USB charger, Power Banks, Batteries or other power supplies Wide output range 1.2V – 25V Compatible with breadboard It has a separate LED indicator for each output More than one input can be connected at the same time without a problem. The priority will be given to the highest input For What Can I Use it? Useful for Home and Online Learning for Electrical and Electronic Courses Students\Learners, Colleges and Universities Useful for Electronics for Kids Courses and Geeks Useful for STEM Clubs and Schools Design and Technology Activities Useful as a Portable Power Supply Powered by a Power Bank Useful as a Battery Charger Useful for various Arduino/Microcontroller Projects including Robotics, Control, Communication and Power Motivations During the Corona Pandemic, all learners have to stay at home and use online resources to gain knowledge, but this limited their practical skills and hands-on. The available affordable power supplies are not cheap, not portable and offer one output The available mini kits in the market can’t provide high currents or multiple outputs simultaneously Kids can’t use complex or Mains-powered power supplies at schools or STEM clubs Limited availability of negative voltages with decent currents Designed for outstanding user experience It has TWO options for output boarding Supplies High Current to Different Loads Simultaneously Practical Testing for all output voltages at various currents from 0.1A to 1.5A I used an electronic load for this test Each table shows below the source of power for the board Red blocks indicate that the voltage dropped more than 10% of the nominal value The best result as shown below is when the board is supplied with a USB Type C charger Practical Testing Results in Tables https://youtu.be/4fZa4WqW4W8 Practical Testing Results in Tables Output Voltage Ripple Assessment Each output has been probed using Ground Spring method at each output capacitor. The voltage ripple measurements are shown below at different loads: Test 1 at No load and Test 2 at 0.5A from each rail. The load is a Programmable DC Electronic Load. The board was supplied by the USB-C Charger. Ripple might be less if the board is supplied by a battery. Thermal assessment at the highest current The board has been tested under the highest current of 1.5A and a thermal top and side view are shown below. The board can be considered warm where the temperature is not exceeding 53°C. Interested in This Project? https://www.crowdsupply.com/tikstation/pika-power-board You can sign up to be notified when this campaign launches, and to get any other useful updates, right at the top of this page. We work hard to only send out useful information and you can unsubscribe at any time. https://www.crowdsupply.com/tikstation/pika-power-board Pika Power Board.docx
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