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REX Classic NEC bkw

bkw777·REX_Classic·PCB/REX_Classic_NEC_bkw.kicad_pcb

REX Classic NEC bkw PCB layout, top view — open source board by bkw777

About the REX Classic NEC bkw PCB

REX Classic NEC bkw is an open source PCB design by bkw777, published on GitHub under the Custom license license. It is a 2-layer board measuring 35.6 × 17.8 mm, with 11 components from 10 distinct parts.

Other key parts include the 122-1469, 1450-M29F800FB5AN6E2 and LP2980AIM5X-3.3/NOPB. By type, the board carries 3 ICs, 3 connectors, 3 capacitors, 1 test point and 1 resistor.

From the project

REX for TRS-80 Model 100, 102, 200

Ordering tips for the pcb & carrier: on PCBWAY manually change the min tracks/spaces to 6mil/6mil For gold contacts, select ENIG copper finish For the carrier select material Nylon, process SLS PCBWAY is more expensive, especially for ENIG, and they don't have the best print option for the carrier. Elecrow is cheaper for ENIG, and their "High Strength Nylon" option for 3d printing is actually black nylon printed by MJF, which is the nicest for this. It's just that on Elecrow you have to upload the gerber zip and carrier stl from releases, there is no pre-configured buy page.

REX Classic NEC bkw, from the project README
From the project README

Main components on the REX Classic NEC bkw

122-14691450-M29F800FB5AN6E2LP2980AIM5X-3.3/NOPB

REX Classic NEC bkw bill of materials (BOM)

11 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
122-1469
XCR3064-VQ44
U1
1
1450-M29F800FB5AN6E2
29F800BB
U2
1
LP2980AIM5X-3.3/NOPB
LP2980-3.3
U3
1
DIP28 legs 27C256
J1
1
JTAG
J2
1
PRG
J3
1
10129379-902002BLF
PINHD-1X1
TP1
1
399-8001-1
1u
C1
2
1u
C2, C3
1
47k
R1

REX Classic NEC bkw design files

The KiCad project lives in the bkw777/REX_Classic repository on GitHub; these links point at the commit this page was built from.

REX Classic NEC bkw: common questions

How big is the REX Classic NEC bkw PCB?

The REX Classic NEC bkw measures 35.6 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the REX Classic NEC bkw?

11 components, from 10 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the REX Classic NEC bkw design files?

From the bkw777/REX_Classic repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the REX Classic NEC bkw design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

More boards in REX_Classic