X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/a8b66f318dda3cc18dfcedaa3af3d01ab68b82e8..9ab445518a01e9b10b5d3e1c99f45d81d874278b:/Projects/RelayBoard/RelayBoard.txt diff --git a/Projects/RelayBoard/RelayBoard.txt b/Projects/RelayBoard/RelayBoard.txt index 1becfbb9f..e1f27c3e9 100644 --- a/Projects/RelayBoard/RelayBoard.txt +++ b/Projects/RelayBoard/RelayBoard.txt @@ -10,7 +10,7 @@ * * The following list indicates what microcontrollers are compatible with this project. * - * - AT90USB1286 + * \li AT90USB1286 * * \section Sec_Info USB Information: * @@ -34,7 +34,7 @@ * USB Standards * * - * Usable Speeds: + * Supported USB Speeds: * Low Speed Mode, Full Speed Mode * * @@ -50,8 +50,8 @@ * * Relays 1 to 4 are respectively wired to pins C4, C5, C6 and C7 of the Teensy++ V2, * which are the PORTC bits 4 to 7 of the AT90USB1286. The relays MUST be wired through - * a transistor, and a diode must be added on the relay's contact pins to protect - * the transistor from back EMF generated from the relay when the coil is turned off. + * a transistor, and a diode must be added in antiparallel on the relay's coil pins to + * protect the transistor from back EMF generated from the relay when the coil is turned off. * The transistor base pin is wired to the Teensy data port through a 10K resistor. A * LED may be also be added as a relay status indicator on each channel. *