Acorn BBC Master Compact expansion board

Ongoing

STD Acorn BBC Master Compact expansion board

Digital

Home_Electronics

License: MIT License

Mode:

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Update time： 2024-01-24 14:46:08

Creation time： 2021-12-27 22:40:54

Description

## This is a project still under development. The firmware needs to be written and the hardware connections need to be debugged. The following is the public GitHub repository where I am developing the firmware: [acorn\_bbc\_master\_compact\_expansion\_cartridge](https://github.com/DanCasterIt/acorn_bbc_master_compact_expansion_cartridge) ## Some pictures of the board ![Board only](//image.easyeda.com/pullimage/RE1AfQHexI66Yt3rFmW48f3hWKxQeVULdOHXHTct.jpeg) ![Board and PC](//image.easyeda.com/pullimage/oQFBvcyygHe79HVA1VzJqzv9zTnuTbl6KramaP7s.jpeg)

Design Drawing

schematic diagram

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PCB_Acorn_BBC_Master_Compact_expansion_board
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PCB

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new_PCB_Acorn_BBC_Master_Compact_expansion_board copy
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity	BOM_Supplier	BOM_Manufacturer	BOM_Manufacturer Part	BOM_Supplier Part
1	10uF	C1,C2	CAP-SMD_BD4.0-L4.3-W4.3-FD	2	LCSC	Rubycon	16SGV10M4X6.1	C88850
2	1uF	C3	CAP-SMD_BD4.0-L4.3-W4.3-FD	1	LCSC	PANASONIC	EEE1HA010NR	C401606
3	100nF	C4	C0603	1	LCSC	SAMSUNG	CL10B104JB8NNNC	C24452
4	ACORN_BBC_MASTER_COMPACT_EXPANSION_PORT	CN1	IDC-TH_300S-50P	1	LCSC	Ckmtw	300S-50P	C146633
5	1N4004F	D1,D2	SMAF_L3.5-W2.6-LS4.7-RD	2	LCSC	SK	1N4004F	C122842
6	1N4148	D3	SOD-123F_L2.7-W1.6-LS3.8-RD	1	LCSC	SEMTECH	1N4148W	C81598
7	ICSP_HEADER	H1	HDR-TH_5P-P2.54-V-M	1	LCSC	Ckmtw	210S-1*5P L=11.6MMGold-plated black	C124379
8	SERIAL_HEADER	H2	HDR-TH_5P-P2.54-V-M	1	LCSC	Ckmtw	210S-1*5P L=11.6MMGold-plated black	C124379
9	+5V_OUT	H6	HDR-TH_2P-P2.54-V-F	1	LCSC	GEPU(歌普)	GP25-2521WV-2P	C2681743
10	PIC_PIN_ROW_4	P1	HDR-TH_20P-P2.54-V-F	1	LCSC	BOOMELE	2.54mm 1*20P Female header	C50984
11	PIC_PIN_ROW_3	P2	HDR-TH_20P-P2.54-V-F	1	LCSC	BOOMELE	2.54mm 1*20P Female header	C50984
12	PIC_PIN_ROW_1	P3	HDR-TH_20P-P2.54-V-F	1	LCSC	BOOMELE	2.54mm 1*20P Female header	C50984
13	PIC_PIN_ROW_2	P4	HDR-TH_20P-P2.54-V-F	1	LCSC	BOOMELE	2.54mm 1*20P Female header	C50984
14	ADDRESS_BUS	P7	HDR-TH_16P-P2.54-V-F-1	1	LCSC	BOOMELE	Female header1*16P pitch 2.54mm	C66987
15	DATA_BUS	P8	HDR-TH_8P-P2.54-V-F-1	1	LCSC	BOOMELE	Female headerHDR1X8-2.54	C27438
16	CONTROL_BUS	P9	HDR-TH_16P-P2.54-V-F-1	1	LCSC	BOOMELE	Female header1*16P pitch 2.54mm	C66987
17	390	R1	R0805	1	LCSC	ResistorToday	PTFR0805B390RN9	C351572
18	240	R2	R0805	1	LCSC	ResistorToday	PTFR0805B240RN9	C351590
19	1K	R3,R4	R0805	2	LCSC	ResistorToday	PTFR0805B1K00N9	C328437
20	5V_PWR_SEL	SW1	SW-TH_SS-13D07-X-X	1	LCSC	XKB Enterprise	SS-13D07-L4-B	C480348
21	2-1437565-7	SW2	KEY-SMD_4P-L6.0-W6.0-P4.50-LS10.0	1	LCSC	TE Connectivity	2-1437565-7	C266206
22	ICSP_PWR_SW	SW3	SW-TH_SS-12F44-G5	1	LCSC	Rectangular Connectors - Contacts	SS-12F44-G5	C136718
23	ON/OFF_SWITCH	SW4	SW-TH_SS-12F44-G5	1	LCSC	Rectangular Connectors - Contacts	SS-12F44-G5	C136718
24	RST_SEL_SW	SW5	SW-TH_SS-12F44-G5	1	LCSC	Rectangular Connectors - Contacts	SS-12F44-G5	C136718
25	SSGM740101	SW6	SW-SMD_8P-L11.9-W6.8-P2.54-LS10.7-TL	1	LCSC	ALPS Electric	SSGM740101	C470387
26	PIC18F87J50-I/PT	U1	TQFP-80_L12.0-W12.0-P0.50-LS14.0-TL	1	LCSC	MICROCHIP(美国微芯)	PIC18F87J50-I/PT	C635588
27	SN74LVC00ANSR	U2,U4	SOIC-14_L10.0-W5.5-P1.27-LS7.8-BL	2	LCSC	Texas Instruments	SN74LVC00ANSR	C78488
28	LM317D2T-TR	U3	TO-263-2_L10.0-W9.1-P5.08-LS15.2-TL	1	LCSC	STMicroelectronics	LM317D2T-TR	C91673
29	USB_PLUG	USB1	USB-B-TH_USB-B10-BRW	1	LCSC	XUNPU	USB-B10-BRW	C720549