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Table of Contents
Summary of Contents for Sparkfun Electronics TOL-11296
- Page 1 12V/5V Power Supply Hookup Guide Introduction The 12V/5V (2A) power supply is great for powering a microcontroller and an LEDs. In this tutorial, we will replace the power supply’s molex connector with two male barrel jacks adapters. Power Supply ‐ 12V/5V (2A) TOL‐11296 ...
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Page 2: Required Materials
Wishlist for 12V/5V Power Supply Hookup Guide SparkFun Wish List Product Power Supply - 12V/5V (2A) TOL-11296 Power Cable - 7A IEC C13 TOL-11299 DC Barrel Jack Adapter - Male PRT-10287 DC Barrel Jack Adapter - Female PRT-10288 ... - Page 3 Tools You will need a soldering iron, solder, general soldering accessories, and the following tools. Digital Multimeter ‐ Basic Hook‐Up Wire ‐ Assortment (Solid Core, 22 AWG) T O L ‐ 1 2 9 6 6 P R T ‐ 1 1 3 6 7 ...
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Page 4: Hardware Overview
Hardware Overview The power supply’s pinout is shown below. The connector’s molding will have numbers associated with the output to help identify the connection. You will also notice that the connector is polarized with the two chamfered corners. Pinout Table Warning! Depending on the manufacturer, the colors of the wires inside the sheath may vary. -
Page 5: Hardware Hookup
Hardware Hookup Cut the cable about 1-2 inches from the molex connector. Cut into sheath with the flush cutter. Pull it back just enough so that you have enough room to work with the wires. Be careful not to cut yourself! - Page 6 Strip the power supply’s three wires. The wires are stranded so feel free to tin the wires by adding solder to the tips. Then cut and strip a piece of hookup wire. Solder it to the ground wire.
- Page 7 Braid the wire and insert into a barrel jack connector. Secure the wires in the screw terminal with a Phillips head. Feel free to add some heat shrink or electrical tape to the connection at this point. Note: Using screw terminals is one method of modifying the 12V/5V power supply. For a more secure connection, try splicing the wires to a polarized connector and adding heat shrink to your connection.
- Page 8 Label the Output Using a Sharpie, clearly label the barrel jack connector’s voltage relative to the output. Feel free to add an additional barrel jack when not in use. Power Your Circuit! Connect the power supply to your circuit and power it up! I personally use the power supply as a tool for basic testing.
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Page 9: Troubleshooting
Troubleshooting Certain power supplies have a lot of noise. While 12V/5V power supply works great with a microcontroller and a LED strip, it may not work as well when you attach a capacitive touch sensor to the system. The power supply lacks proper filtering and causes the potentiometer to have a lot of latency. - Page 10 Need some inspiration for your next project? Check out some of these related tutorials that uses the 12V/5V (2A) power supply. RGB Panel Hookup Guide Make bright, colorful displays using the 32x16, 32x32, and 32x64 RGB LED matrix panels. This hookup guide shows how to hook up these panels and control them with an Arduino. Large Digit Driver Hookup Guide ...
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