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Your First Altium Project (view source)
Revision as of 02:38, 22 November 2017
, 02:38, 22 November 2017no edit summary
We're now going to add three new sheet entries with Place → Add Sheet Entry {{altium-shortcut|p → a}}. After you start placing, hit {{altium-shortcut|tab}} to bring up the options menu. The two fields to look at are again "Name" and "I/O Type." We're going to add for sheet entries for pins 1, 3, and 5. Add three new sheet entries, making sure their names are "1," "3," and "5," and their I/O types are all set to "bidirectional."
We're now going to add three new sheet entries with Place → Add Sheet Entry {{altium-shortcut|p → a}}. After you start placing, hit {{altium-shortcut|tab}} to bring up the options menu. The two fields to look at are again "Name" and "I/O Type." We're going to add for sheet entries for pins 1, 3, and 5. Add three new sheet entries, making sure their names are "1," "3," and "5," and their I/O types are all set to "bidirectional."
====Place Power Ports====
[[File:Power Ports.png|thumb|200px|right|What you should have after placing the first two power ports and connecting them to the sheet symbol]]
Power ports are special symbols that represent power "rails" - specific voltages that are distributed across a PCB. These are commonly used for ground and power voltages. Power ports connect by name - meaning that all power ports named "GND" will connect to each other.
We're going to add two power ports - one for ground and one for 3.3 volts, by clicking Place → Power Port {{altium-shortcut|p → o}}. Hit {{altium-shortcut|tab}} to bring up the options menu, which has two important fields: "Net," which is the name of the power port, and "Style," which controls its appearance. Set the net to "GND" and set the style to "Bar." It's a standard in SSI PCBs to use bar symbols for ground, with the bar facing down. Hit okay on the options menu and place the power port near the GND sheet entry. Rotate it with {{altium-shortcut|space}} to make the bar face down.
After placing, hit {{altium-shortcut|tab}} again to bring up the options menu, and change the net to "+3.3V" and the style to "GOST Arrow." The SSI standard for supply voltages is a GOST arrow facing upwards (except when the voltage is negative, which should face down). Hit ok and place the new power port near the +3.3V sheet entry, rotating the arrow to point up.
====Place Wires====
Wires are the dark blue lines that electrically connect ports, sheet entries, and pins in your schematic.
Place wires with Place → Wire {{altium-shortcut|p → w}}. Draw a wire from the GND sheet entry to the pin of the GND power port, and another wire from the +3.3V sheet entry to the +3.3V power port. You'll now have something looking like the picture at right.
[[Category:Getting started]]
[[Category:Getting started]]
[[Category:Altium]]
[[Category:Altium]]