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Minor documentation fix for the RelayBoard project.

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Dean Camera 2011-06-30 12:27:01 +00:00
parent 5a580c6854
commit b162540099
1 changed files with 2 additions and 2 deletions
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4
Projects/RelayBoard/RelayBoard.txt
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@ -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.
*