📬❄️📦Adafruit Holiday Shipping Deadlines 2019:
Attention all domestic customers! Please place UPS Ground and USPS First Class & Priority orders by 11am ET Monday December 9, 2019
Attention all international customers! Please place all UPS WORLDWIDE EXPRESS; SAVER, and DHL EXPRESS WORLDWIDE orders by 11am ET Monday December 9, 2019
12V Switched-mode Power Supply Reverse-Engineered, Modified for 5-15V Variable Output with Voltmeter Display
This video – and accompanying blog post – by Lindsay Wilson is impressive. In it he shows and explains the steps for modifying a SMPS to deliver variable voltage, with an extensive analysis of the power supply circuit, along with reverse-engineering the PCB, removing native components, adding a new feedback divider, fitting a voltmeter display onto the supply chassis, and more.
I’ve taken a 12V 33A power supply and modified the feedback network to provide a fully adjustable 5-15V. I’ve also traced out the entire schematic. A full description of operation and details of the modification are available on my website at the link below.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.