Normal (Magic-Psi Transparency): No such thing as a Spell-to-Power Erudite; you're limited to creating Psionic Items, which are pretty good, but probably not as good as Magic Items. T1 but below regular Artificer.
Just wanted to point out that under normal Transparency rules, you're not limited to creating Psionic items. Magic Item Compendium buffs the Craft Psionic Arms and Armor and Craft Universal Item feats to allow the creation of otherwise Magic items. While you're not allowed to use UMD to mimic spells, you are allowed to use UPD to mimic powers. Conveniently, "If an item includes a spell prerequisite, but the effect of the item does not directly implement that spell, then a psionic power of similar flavor can be substituted."
You still lose out because there's more Spells than Powers that exist in the game, and you can't create scrolls or wands of those effects. But as long as you can find a Power that fits the vague "flavor" of a certain spell, you can fudge the prereqs enough to make an item.
That's true so far as it goes, but I feel like spells and caster-emulation in general is the more powerful strategy.
For example: the
Wand Surge feat + the
unfettered heroism spell. That's one free use of any staff or wand each round, for the price of a 5th level slot. That means one
wish per caster level for free. If your staff has both
unfettered heroism and
wish at a cost of 1 charge each, then you can cast
wish all day for free -- just make sure you have a reusable way to kick start the process each day, maybe some schemas of
unfettered heroism or a Dragonmark + that feat which lets you burn an SLA for an action point.
Casters can do exactly the same thing, of course, but they're generally not given Craft Staff for free, nor do they have guaranteed access to
wish and all other spells -- but not merely guaranteed, the Artificer also gets access
early (and then list-sniping to get some spells
double-early).
(Eventually you'll just break down and take
Wand Surge + Use Psionic Device on a staff of
wish and
unfettered heroism, which you bought off a REAL Artificer. You pay full retail price for the staff, just like a mere Wizard. This brings shame upon your clancestors. Your father commits seifuku.)