Severson-Group · mohamed-dek1 · Jan 29, 2026 · Jan 30, 2026 · Jan 30, 2026 · Jan 30, 2026
@@ -1,6 +1,6 @@
-# AMDS Daisy Chain Board
+# AMDS Daisy Chain Adapter Board
 
-The daisy chain board is an accessory to the AMDS REVD with the goal of providing the AMDS the ability to daisy chain multiple times.
+This subfolder houses all the design files for the daisy chain adapter board used to operate the AMDS in a daisy-chained configuration.
 
 ## Documentation
 

@@ -0,0 +1,39 @@
+# Daisy Chain Adapter REV20260129A
+
+This folder contains the compiled design outputs for the Daisy Chain Adapter. This includes the schematics, images of the PCB layout, the bill of materials (BOM), and the files needed to order fully populated boards from an online vendor.
+
+## Board Parameters
+
+| Question                  | Answer           |
+|---------------------------|----------------- |
+| Board Size                | 2.17" x 2.80"    |
+| Number of Layers          | 4 Layers         |
+| Double Sided              | Yes              |
+| Surface Finish            | Tin lead         |
+| Silkscreen                | White            |
+| Material                  | FR-4, TG150      |
+| Board Thickness           | 1.6 mm           |
+| Min Trace Spacing         | 0.127 mm (5 mil) |
+| Min Hole Size             | 0.36 mm (14 mil) |
+| Number of Holes           | 78               |
+| Solder Mask               | Black            |
+| HASL or ENIG              | No               |
+| Finished Copper           | 1 oz             |
+
+## Assembly Details
+
+| Question                          | Answer           |
+|-----------------------------------|------------------|
+| Unique Part Count[^1]             | 14               |
+| Number of Total Parts[^1]         | 29               |
+| Total SMT Part Count              | 26               |
+| Total Through-hole Part Count     | 3                |
+| Total Mechanical Screws           | 4                |
+| Total Mechanical Standoffs        | 4                |
+| BGA / QFN                         | No               |
+
+## Bill of Materials
+
+The [Bill of Materials (BOM)](daisy-chain-bom.csv) contains components for 1 board. If users of this repo discover that any components are unavailable, please maintain an `alternate-components.md` file in this folder that lists approved alternates.
+
+[^1]: This number does not include screws or standoffs. With screws and standoffs included, the unique part count is 16 and total parts is 37. Users are advised to not have their assembly vendor place screws and standoffs.
@@ -0,0 +1,17 @@
+Quantity,Designator,Description,Value,Footprint,Supplier Part Number,Manufacturer Part Number,Supplier,Manufacturer
+"4","C1, C2, C3, C4","CAP CER 0.1UF 50V Y5V 0603","0.1uF","0603-CAP","311-1343-1-ND","CC0603ZRY5V9BB104","Digi-Key","YAGEO"
+"1","C5","CAP CER 10UF 25V X5R 0805","10uF","0603-CAP","490-10748-6-ND","GRM21BR61E106MA73L","Digi-Key","Murata Electronics"
+"2","C6, C7","CAP CER 6.8UF 50V JB 1206","6.8uF","CAP-1206","445-11734-1-ND","C3216JB1H685K160AB","Digi-Key","TDK"
+"2","CON1, CON2","CONN DSUB HD RCPT 15POS R/A SLDR","","ICD15S","609-2801-ND","ICD15S13E6GX00LF","Digi-Key","Amphenol ICC (FCI)"
+"1","CON3","TERM BLK 2POS SIDE ENTRY 5MM PCB","","1935161","277-1667-ND","1935161","Digi-Key","Phoenix Contact"
+"1","L1","SMD Common Mode Line Filter WE-SL5 HC, L = 9.00 µH","","WE-SL5","732-2215-6-ND","744273801","Digi-Key","Wurth Electronics"
+"1","LED1","LED RED CLEAR SMD","","0603-LED","160-1447-1-ND","LTST-C191KRKT","Digi-Key","Lite-On Inc."
+"2","R1, R6","RES SMD 0 OHM JUMPER 1/10W 0603","DNP","0603-RES","P0.0GDKR-ND","ERJ-3GEY0R00V","Digi-Key","Panasonic Electronic Components"
+"4","R2, R3, R4, R5","RES 120 OHM 1% 1/10W 0603","120","0603-RES","311-120HRCT-ND","RC0603FR-07120RL","Digi-Key","YAGEO"
+"1","R7","RES 10K OHM 1% 1/8W 0603","10k","0603-RES","RNCP0603FTD10K0CT-ND","RNCP0603FTD10K0","Digi-Key","Stackpole Electronics"
+"1","R8","RES 470 OHM 1% 1/10W 0603","470","0603-RES","RMCF0603FT470RCT-ND","RMCF0603FT470R","Digi-Key","Stackpole Electronics"
+"4","SCREW1, SCREW2, SCREW3, SCREW4","MACH SCREW PAN PHILLIPS #4-40","","","KEY1046-ND","9900","Digi-Key","Keystone Electronics"
+"4","STANDOFF1, STANDOFF2, STANDOFF3, STANDOFF4","HEX STANDOFF #4-40 BRASS 1/2""","","","36-1656-ND","1656","Digi-Key","Keystone Electronics"
+"6","TP1, TP2, TP3, TP4, TP5, TP6","PC TEST POINT NATURAL","","RCU-0C","A106145CT-ND","RCU-0C","Digi-Key","TE Connectivity AMP Connectors"
+"2","U1, U2","DG ISO 2.5KV RS422/RS485 16SOIC","","SOIC127P1030X265-16N","296-43594-1-ND","ISO3086TDWR","Digi-Key","Texas Instruments"
+"1","U3","Recom RS6","","RS6 DCDC","945-2985-ND","RS6-2405S","Digi-Key","Recom"
@@ -0,0 +1,19 @@
+----------------------------------------------------------------------------------------------------------------------------------
+NCDrill File Report For: pcb-daisy-chain.PcbDoc   1/30/2026  11:21:58 AM
+----------------------------------------------------------------------------------------------------------------------------------
+
+Layer Pair : Top Layer to Bottom Layer
+ASCII RoundHoles File : pcb-daisy-chain.TXT
+
+Tool       Hole Size               Hole Tolerance               Hole Type       Hole Count   Plated         Tool Travel
+----------------------------------------------------------------------------------------------------------------------------------
+T1      0.356mm (14mil)                                           Round             31        PTH        170.27mm (6.70inch)
+T2      0.9mm (35mil)                                             Round             30        PTH        92.89mm (3.66inch)
+T3      1mm (39mil)                                               Round             7         PTH        17.78mm (0.70inch)
+T4      1.3mm (51mil)                                             Round             2         PTH        5.00mm (0.20inch)
+T5      3.2mm (126mil)                                            Round             4         PTH        89.25mm (3.51inch)
+T6      3.3mm (130mil)                                            Round             4         PTH        176.86mm (6.96inch)
+----------------------------------------------------------------------------------------------------------------------------------
+Totals                                                                              78
+
+Total Processing Time (hh:mm:ss) : 00:00:01