Sanguish
Release status: experimental
| Description | All in one electronics with toshiba drivers
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Important Note: As of July 10 2012, the TB6560 version of Gen7T has been put on hold due to difficulties routing a single sided board with these chips. The Gen7T designs files are currently being reworked for a Sanguinololu compatible double sided design. I intend to get back to Gen7T eventually, likely using the THB7128 chip as it looks to be much more friendly to single sided design. But don't let my intentions lull you into complacency. I'm a slow developer, so if you want a single sided version sooner than the next six months or so feel free to work one up yourself. You can even take the Gen7T page if you like. Just drop me a line.
Gen7T is a branch of the Gen7 electronics platform with through hole toshiba TB6560AHQ drivers substituted for the pololu driver daughter boards. The main advantage is cost savings, as the toshiba drivers are much less expensive than the pololu boards. In addition it is likely that the toshiba drivers will allow higher current motors to be used. The HZip form factor will be much easier to heatsink, and the drivers will handle more current before requiring a heatsink than the pololu drivers will. Unfortunately the pinout makes it difficult to do large traces for power carrying lines on a single sided board so this board will likely have a limit of about 2A or so.
Note: The enable line is inverted from the way it works on the pololu drivers so this MUST be changed in firmware before powering on the 12V to the drivers, otherwise the smoke will escape.
Contents
How to get it
PCBs
I have one working board that I am doing testing on. Everything seems to be fine so far, but my testing time is limited, so if you are feeling adventurous, you can try the initial release. Otherwise you might want to wait till I've tested more thoroughly. File:Gen7t 0.1.2.zip The release only includes the initial GEDA development files. It is left to the enterprising beta user to convert to toner transfer or milling patterns.
Note: Minor update; there was a missing trace that has been fixed in the file above, so if you downloaded 0.1beta you should use the one above instead. Also there was a problem with the toshiba package that caused GEDA to report shorts on all the toshiba pins. Traumflug made a corrected footprint and it's fixed now.
Components
Here is the preliminary Mouser project. It should have everything in it needed to build the basic board. No external parts are included. So cabling, endstops, etc. are left to the user to source. You can of course use the Gen7_Endstop_1.3.1 or use mechanical endstops.
BOM comming soon(ish)
