Raspberry PI

Ongoing

STD Raspberry PI

License: null

Mode:

Editors' pick

2.5k
2
1
10

Update time： 2022-11-02 06:55:18

Creation time： 2019-07-23 10:35:28

Description

This project is basically a shield for the Raspberry PI and adds following features:

* Buffer for IOs: it utilizes the SN74HC244NSR (which is a Octal Buffers and Line Drivers With 3-State Outputs chip)
* MCP3008T-ISL: 2.7V (4-Channel/) 8-Channel 10-Bit A/D Converters with SPI Serial Interface

The Buffer for IOs is used due to the fact, that the inputs on the Raspberry PI are sensitive and are not protected. So the SN74HC244 is doing the job here.

The ADC IC MCP3008T-ISL is an 8-Channel 10-Bit ADC which adds an ADC functionality to the Raspberry PI.

Design Drawing

schematic diagram

（ 1 / ）

RASPI_IO_AUTOMATION_SCH
Open in Editor

PCB

（ 1 / ）

RASPI_IO_AUTOMATION_PCB
Open in Editor

The preview image was not generated, please save it again in the editor.

BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	FODM124R2	U3,U5,U6,U7	MINI-FLAT-4	4
2	277-7676-ND	U8,U9	PTSA0.5/8-2.5-Z	2
3	1984989	T1,T2,T3,T4,T5,T6	1984989	6
4	1k	R12,R11,R14,R16,R19,R20,R1,R2,R5,R6,R7,R8,R9,R10,R13,R15,R17,R18	R0603	18
5	MCP3008T-ISL	U4	SOIC16N	1
6	15n	C26,C24,C22,C21,C18,C19	C0603	6
7	4.7n	C1,C3,C5,C8,C9,C12,C14,C16	C0603	8
8	10k	R3,R4	R0603	2
9	100n	C23,C2,C4,C6,C7	C0603	5
10	CONN_20X2_RASPI	P1	HDR-TH_40PIN-V-ROW2-COL20-FEMALE-PITCH2.54	1
11	BAT854SW	D1,D2,D4,D3,D5,D6	SOT323	6
12	SN74HC244NSR	U10	SOIC-20_L13.3-W5.5-P1.27-LS7.8-BL	1
13	47u	C13	CAP-D4.0XF1.5	1