Changes between Initial Version and Version 1 of SpringleafUSBControl


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Timestamp:
Nov 8, 2013, 10:17:53 AM (7 years ago)
Author:
hazen
Comment:

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  • SpringleafUSBControl

    v1 v1  
     1This page describes a USB battery discharge controller for Springleaf.
     2
     3== Project Description ==
     4
     5(from Greg Ekchian at Springleaf)
     6
     7I would like to quote a project for making a printed circuit board and containing box with the following criteria.
     8 
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     13
     14== Further Details ==
     15
     16He would like two assembled boxes and one spare assembled PC board.
     17He has a USB-6210 we can borrow.
     18
     19He would like us to order both sizes of box proposed below and we should use the smaller size
     20if the USB-6210 fits.
     21
     22An additional connector should be provided for an alternative application where
     23no relay is required, i.e. a connector across the relay contacts.
     24
     25
     26== Parts Chosen ==
     27
     28* USB-6210 from National Instruments – [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203223 Web Page] • [http://ohm.bu.edu/~hazen/Springleaf/USB_Box/ Photos]
     29* Preferred box:  Hammond 1590EBK
     30* Alternate box:  Hammond 1590EEBK
     31* Banana jack black:  Pomona 1581-0
     32* Banana jack red: Pomona 1581-2
     33* Banana jack yellow:  Pomona 1581-4
     34* Relay:  Coto 9007-05-40 (DigiKey 306-1251-ND)
     35
     36The USB-6210 is to be mounted inside the box with an opening cut to allow entry of the USB cable.
     37One digital output from the USB-6210 drives the coil of the relay.  The N.O. relay contacts
     38are connected in series with the battery and 60 ohm resistor.
     39
     40Proposed layout is an ExpressPCB mini-board mounted below the lid of the box on short spacers.
     41The banana plugs would be mounted in the PCB, projecting through the lid.
     42The relay, resistor and a two-pin connector for the USB-6210 are mounted on the bottom of the board.
     43
     44== Design Files ==
     45* [http://ohm.bu.edu/~hazen/Springleaf/USB_Box/files/Automated%20Rdc%20System%20Box.PDF Front Panel Drawing]
     46* Schematic [http://edf.bu.edu/~cjlawlor/SpringLeaf/USBControl/USBControl.sch USBControl.sch] • [http://ohm.bu.edu/~cjlawlor/SpringLeaf/USBControl/USBControl_sch.pdf PDF]
     47* Layout [http://edf.bu.edu/~cjlawlor/SpringLeaf/USBControl/USBControl.pcb USBControl.pcb] • [http://ohm.bu.edu/~hazen/Springleaf/USB_Box/files/USBControl_pcb.pdf PDF]
     48* Mechanical Drawing [http://edf.bu.edu/~cjlawlor/SpringLeaf/USBControl/USBControl.dxf USBControl.dxf]
     49