Renoir's RepRap Heater Board

thingiverse

This Arduino breakout board boosts the 5V signal to a high-power 12V, ideal for running heaters, fans, and heated beds on RepRap printers. The IDC plugs into your Arduino Mega Shield (http://www.thingiverse.com/thing:3308) with a power socket designed to accept standard PC disk drive plugs. A MOSFET (http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1228327), FDB8880, is used for amplification and can handle 54A - more than sufficient for the board's needs and what a PC power supply can provide. There are eight separate outputs on the board, ensuring multiple redundancy for peace of mind. The board is simple, making it an excellent starting point for SMD soldering practice, as each output is distinct, allowing you to rectify mistakes without compromising other circuits. It's also suitable for single-sided etching at home using the laserprinter method. LED locations are duplicated for flexibility in choosing between standard and SMD indicator LEDs (http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1576629). The resistors are 1206 SMD 1kOhm (http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1177877), and 4-way 5mm terminal blocks (http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1298785) or 2-way terminal blocks with correct spacing are recommended for connectivity. The board follows the same 10-pin IDC header design as RepRap stepper boards (v2.3) (http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1298785). Version 0.6 now includes current limiting resistors and pull-down resistors to ensure the board shuts off when disconnected.