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Re: regulators
¿ªÔÆÌåÓýThe LM1086IT-3.3/NOPB
datasheet shows the tab as Vout:
John W1JDS On 2/11/2019 12:03 PM, k7da wrote: what am i missing?? the data sheet shows the tab as ground. |
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Re: Which size display will fit the blue box
The BuyDisplay.com site has detailed specs on the display, including its dimensions. The size is measured like a TV: on diagonal. As a result, a 5" display is actually about 3.25" tall. Check before you decide on a case. Jack, W8TEE
On Sunday, February 10, 2019, 11:09:48 AM EST, Lee <mr.olson@...> wrote:
I bought a 270 x 140 x 210 mm blue box from eBay? .?? Lay it on the side, take the handle off and my 7" display fits in what was the top.? Mounted close to the left edge there is still room for the knobs, switches and jacks. ?--
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Re: Display question?
We're not sure why this happens. You should be able to move one "out of the way". Jack, W8TEE
On Sunday, February 10, 2019, 10:54:32 PM EST, Guy <sgbridge@...> wrote:
Thanks for the clarification. The reason I was confused was when I printed the Assembly Docs out some of the images got superimposed on one another and the Display figure was barely showing.? Guy WB7SZI |
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Re: Which size display will fit the blue box
I bought a 270 x 140 x 210 mm blue box from eBay? .?? Lay it on the side, take the handle off and my 7" display fits in what was the top.? Mounted close to the left edge there is still room for the knobs, switches and jacks.
?--
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Re: SPI speed set to 10 MHz
The SPI speed will have no noticeable impact on the performance of the system. However, this is Open Source so if you want to change it, go ahead and do so, Jack, W8TEE
On Saturday, February 9, 2019, 3:01:10 PM EST, Gary Anderson <gary.ag5tx@...> wrote:
Is there a reason why SPI speed to the RA8875 is set to 10 MHz on JackAl? or is this something that should be explored for better system performance? This could be a simple oversight in library modification, since it is buried one directory level below and would not affect functionality. I don't have hardware built to test, but I verified through adding a pragma message that in the lib RA8875\_settings\RA8875UserSettings.h that?SPI_HAS_TRANSACTION is defined. MK20 case sets MAXSPISPEED = 22000000UL MK66 should be able to do the same (pending wire-up limitations, etc) Currently not defined and it falls through to default. Might make things a little snappier.? Might be a place to tune out possible harmonic issues. Speed might be limited to wire length and routing. Might be a total don't care. Might be that I am out to lunch figuratively, because I am literally. Thought I would pass along the observation before I forget, and if this is an area for improvement, that others don't wait until I get around to building. Also same if/else type statement in "_utility", but that doesn't appear to be used in the JackAl code. Rgds, Gary AG5TX |
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Re: Display question?
Look in section 2 Jack, W8TEE
On Saturday, February 9, 2019, 7:17:09 PM EST, Guy <sgbridge@...> wrote:
Could someone please post a pic of the 5 inch display¡¯s edge connectors with the correct pin-outs that we¡¯ll be using or direct me to the proper doc that shows this. ?Thanks- Guy WB7SZI? |
George Baumann
jjpurdum
Guy
Lee