I do like the idea of each drive unit being a neat 9-pin connector.
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Farthest out of my wheelhouse: rest of the wire harness for peripheral and payload function. There are 8 GPIO pins I can make good use of, but the bus options (CAN, UART, SP1, I2C) are black-magic to me. Where might a camera go?
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I’ll admit the thought crossed my mind since D-subs are the only kind I’ve actually soldered in my brief, unglamorous grad school career in hardware circa 1998. Bulky so easy to solder.
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Replying to @vgr
If you’re proposing a DB9 connector I have to leave.
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For the Gen-Z usb-c kids who’ve never seen this kind of cabling...
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Forking off a subthread on learning to use the Beaglebone Blue, which I suspect will take over this main thread if I let it. Will post main rover shit on this thread, BBBlue-specific stuff on this side thread.
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Off to an inauspicious start with the Beaglebone Blue. The network drivers won’t install on MacOS Catalina. Apparently the packages, HoRNDIS and EnergiaFTDIDrivers (no idea what they do… ELI5?) do shady shit at system level so Catalina sez no.
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Reprinted the ABTF test rig chassis with taller standoffs and now the battery fits and the short cable even reaches the board. But ordered an extension cable too.. this is too awkward.
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As you can see, I had to add like 15mm because I initially planned on flat pouch battery but switched to this cylindrical one. Switch from red to white is because I got a 2 for 1 deal on white PLA on prime day and am saving my red PLA for main rover.
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Half-assed hack of drive and passive wheel struts… measure the wheel/motor subassembly, capture dimensions on rough whiteboard sketch, CAD it up, print… hope to have mechanical assembly for this weekend.
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Can already tell wire harness will be a bitch to manage. Those 6 motor wires are kinda stiff and with wheel pivoting at contact point, wires will swing quite a bit. Enough slack for strain relief, not so much the wires snag.
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Replying to
I'll have that if I butt solder the 6 wires individually to the connector cables at the board end, in which case they'll act as a somewhat flexible point... is that what you mean? Was thinking of cable-to-cable connectors actually for easy disassembly.
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that shouldn't be a problem... the mobile end connects to the motor via a connector, but is otherwise not going to contact anything... we'll see
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