Oh, ok....Indeed the location of the PC104 is not specified in the LTM ICD as I thought it was. That's odd. But Bill just said that he updated the Blinky with its PC104 location. Are they the same? Which one did you really want? 73,
Burns Fisher, WB1FJ *AMSAT(R) Engineering -- Flight Software*
On Wed, Apr 17, 2024 at 1:30 PM Bob Stricklin via pacsat-dev < [email protected]> wrote:
Bill,
I have revised the drawing to include the connector location based on the hole locations in the PCB drill file.
I don’t think the LTC document provides an exact location for these holes. This board should match other AMSAT boards unless the connector was relocated. It is quite easy to accidentally select the connector in KiCAD and end up with it in a slightly different location.
It would be good to research the connector drawing and see what the pin spacings are. I thought they were 2 mm. The dimensions I show here are slightly less than 2 mm in the length dimension. Probably still work fine.
The dimensions in the LTC document are in metric and the dimensions used on the PCB layout are in mils. You can obtain more accurate placement with KiCad because of the way it handles rounding.
I will push a copy of this to the GitHub Hardware rev C board.
Bob
On Apr 17, 2024, at 9:19 AM, Bill Reed [email protected] wrote:
Your drawing does not show the position of the 102 pin connector.
Does the position of the 102 pin connector match the LTM document? On 4/16/2024 7:28 PM, Bob Stricklin wrote:
Bill,
Take a look at this ZIP file and you will find a mechanical drawing of the PCB.
https://github.com/AMSAT-NA/PacSatDocs/blob/main/Hardware/PCB/PacSat_Dev_Rev...
The 104 pin connector is not specified here but the hole locations for the connector are included in the drill file. I will take a look at the dimensions and revise the drawing to include three of the connector corner pins later.
These dimensions match the LTM document.
Bob
On Apr 16, 2024, at 11:24 AM, Bill Reed via pacsat-dev < [email protected]> wrote:
Do we have a document that specifies:
- Blinky overall dimensions
- Blinky mounting hole positions
- Blinky 104 pin connector position
Bill
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