REX Classic bkw flats

bkw777·REX_Classic·PCB/REX_Classic_bkw_flats.kicad_pcb

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

About the REX Classic bkw flats PCB

REX Classic bkw flats is an open source PCB design by bkw777, published on GitHub under the Custom license license. It is a 2-layer board measuring 38 × 16.6 mm, with 13 components from 11 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, 2 test points 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 bkw flats, from the project README — From the project README

Main components on the REX Classic bkw flats

122-14691450-M29F800FB5AN6E2LP2980AIM5X-3.3/NOPB

REX Classic bkw flats bill of materials (BOM)

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

Qty	Part	Footprint	Refs
1	122-1469 XCR3064XL-VQ44	VQFP44	U1
1	1450-M29F800FB5AN6E2 29F800BB	TSOP-48	U2
1	LP2980AIM5X-3.3/NOPB LP2980-3.3	SOT-23-5	U3
1	Tandy_100_102_200_option_rom	Molex78802_PCB_28_REX_slots	J1
1	JTAG	1x6_pcb_socket	J2
1	PRG	1x4_pcb_socket	J3
1	Molex78802_PCB_28 Carrier	Housing_Molex78802_PCB_28	N1
2	10129379-902002BLF PINHD-1X1	1x1_pin_h	TP1, TP2
1	399-8001-1 1u	C_0805	C1
2	1u	C_0805	C2, C3
1	100k	R_0805	R1

REX Classic bkw flats 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 bkw flats: common questions

How big is the REX Classic bkw flats PCB?

The REX Classic bkw flats measures 38 × 16.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the REX Classic bkw flats?

13 components, from 11 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 bkw flats design files?

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

Can I use the REX Classic bkw flats 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