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
![enter image title here enter image description here](https://ksr-ugc.imgix.net/assets/035/010/366/b71a93b34467b6c51d466ecf17436004_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1632607310&auto=format&gif-q=50&q=92&s=a1abb5c72460b62be3fde79829c30679)
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 Pendamic, 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
![enter image title here TikStation Breakdown](https://ksr-ugc.imgix.net/assets/035/010/381/69af8c5a8d7c04d5552ed415b3c7446f_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1632607434&auto=format&gif-q=50&q=92&s=7a96ff9f1aa4cb2ac08fc09664eb75d0)
It has TWO options for output boarding
![enter image title here](https://ksr-ugc.imgix.net/assets/035/010/327/284ccabda8df514eba7e545c4a8e0756_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1632606939&auto=format&gif-q=50&q=92&s=edf7d6d4c4d32bb7b16c62870ddd9335)
![enter image title here](https://ksr-ugc.imgix.net/assets/035/010/371/c0a7c8bf0db467e0d54758d6522d4543_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1632607360&auto=format&gif-q=50&q=92&s=09b8b90ec8f738aa004bf6f1e4446b30)
Supplies High Current to Different Loads Simultaneously
![enter image title here](https://ksr-ugc.imgix.net/assets/035/108/479/25d665cc6d5f91738277040863fc074d_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1633331690&auto=format&gif-q=50&q=92&s=6b1f7ebb88e42bc2b9970f24b5581473)
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
Testing demonstration:
Practical Testing Results in Tables
![](https://ksr-ugc.imgix.net/assets/035/097/948/7b91a54d9e4e6a573099293c5089dc32_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1633221100&auto=format&gif-q=50&q=92&s=c831b5d0b1290500d59b5c2bb003675c)
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.
![](https://ksr-ugc.imgix.net/assets/036/012/214/8fc106287857f6def1c4751ffe507fc3_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1641603160&auto=format&gif-q=50&q=92&s=cb4fd1a4c0bb38b541768bc9aa0fc616)
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.
![](https://ksr-ugc.imgix.net/assets/035/108/210/646543ebbac459e8f26dea48b7614f6b_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1633328595&auto=format&gif-q=50&q=92&s=9f090622447ced48b82cc656a29240e7)
The package includes the Mainboard Plus: Output Extension Board X 1PCS; Adjust Screwdriver X 1PCS;
![enter image title here](https://ksr-ugc.imgix.net/assets/035/694/773/17a72cd389322053d89637ba132c7e5b_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1637922906&auto=format&gif-q=50&q=92&s=5f2aa15c1dd334c9508f93429b31d6ee)
![enter image title here](https://ksr-ugc.imgix.net/assets/035/108/135/96bf6523ab58addef356583b16bc3da8_original.jpg?ixlib=rb-4.0.2&w=680&fit=max&v=1633327788&auto=format&gif-q=50&q=92&s=e89909050bbc39860c86c526bfab4a42)