prepare to send to jlcpcb

[hw/telelco] / Notebook

diff --git a/Notebook b/Notebook
index 0cc11283591154a580a4a2be10a5dead1c858039..f5bb8093455efe9d9589411529d589bbc7c3e9d6 100644 (file)
--- a/Notebook
+++ b/Notebook
@@ -16,3 +16,55 @@ less engineering margin than we usually like.
 
 Changing the circuit to be powered from v_lipo with the gpio hooked to shdn*
 and controlling a FET switch on the output might be smarter someday?
+
+2019.12.09
+- what gets through-hole soldered on to a v2.1 board (sans optics)
+
+       6-pin micromatch with locking ears
+       2 * 9-pin screw terminal strips
+       5x1 100mil straight header
+       beeper
+       LiPo connector
+       edge-launched SMA
+       2x1 100mil right-angle header
+
+2023.02.10
+- the LCD digits we've used, Lumex LCD-S101D14TR, are only available now if
+  we're willing to order 3150 pieces at !.85 each or $5,827.50.  That's just
+  not reasonable when we only need 3 per unit and a big build might be 35
+  units!
+
+- DK and Mouser both have the Varitronix VI-611-DP-FH-W in stock.  This is a
+  6-digit LCD display whose digits are 25.4 mm tall instead of 34.54.  This
+  LCD module would require the PCB width to grow an inch in width to 5.5 
+  inches.  A quick look at the FreeCAD file suggest this is manageable without
+  a complete re-design of the panel.  By using the panel to only expose 3 of
+  the digits, we could mimic the existing functionality.  At $16.27 for q5 
+  and above from Mouser, this seems like a credible way of making more TeleLCO
+  in 2023?
+
+2023.02.15
+- we should have 31 SOC left after TeleMega v6.0 build if all goes well, which
+  means we should target a batch size of 30 boards.
+
+- 1170NF in orange is hard to get.  The part number is 1170-001-150. 
+  mteagleent.com seem willing to sell me 30 pieces for $1,520.40 plus $15.00 
+  shipping.  Pounce on it?
+
+2024.02.17
+- Keith thinks we should move (back?) to USB mini B for TeleLCO, and suggests
+  we deliver:
+       https://www.mouser.com/ProductDetail/172-PX0446
+       https://www.mouser.com/ProductDetail/172-PX0441-2M00
+       https://www.mouser.com/ProductDetail/157-PX0484
+
+- Pelican 1170 orange is no longer available without foam.  Amazon has a good
+  price for modest quantities once you include shipping.  Set up tax-exemption
+  with Amazon in anticipation of using them for stuff like this, and ordered
+  one unit to package my proto board.
+
+- Avnet has the 12-click-per-rotation shaft encoders for a price at q30 that
+  DK and Mouser only offer on q100 of the 16-click-per-rotation units, but
+  they aren't stocked and have 16-18 week delivery times.  Since it's "only" 
+  about $100 total difference on 25 pieces, do we really care?
+