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Rpi automation Hat

8 months ago 174
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Description

This is an experimental Automation Hat for Raspberry Pi with an ESP32. It is work in progress I will try with the ESP32 to have the following functionalities: 2 Digital Inputs 24V 2 Digital Outputs managed by 5V Relays displays the results on an OLED display through i2C using the ADC of the ESP 32 to convert 4-20mA into voltages signal read by the ADC of the ESP32 using the DAC of the ESP 32 to convert voltages into 4-20mA signal on the output Modbus connected to the ESP32 Then to send the results from the ESP32 to a Raspberry Zero-W pi via i2c Zero-W pi will be controlled via VNC from a laptop

Documents

Sheet_1

Sheet_2

PCB_2020-08-18_13-48-32

BOM

ID Name Designator Footprint Quantity
1 300Ω R6,R4 1206 2
2 20mm_PCB_Fuse_Holder F1 20X5MM_FUSE_HOLDER_22MM_CENTRES 1
3 MAX485CPA U7 DIP-8 1
4 ESP WROOM 32 U4 ESP32 1
5 2.2K R1,R2 1210 2
6 HSMG-C150 LED1,LED2,LED3,LED4,LED5,LED6,LED7 LED1206-R-RD 7
7 1N4004 D1,D2 DO-41_BD2.4-L4.7-P8.70-D0.9-RD 2
8 PHOENIX J1,J2,J6,J4,J3,J5,J7 PHOENIX PKG 7
9 ALQ305 K1,K2 RELAY-TH_ALQ3XX 2
10 0.1uF C2 RAD-0.1 1
11 10uF C1 RAD-0.1 1
12 SSD1306-128x64-OLED-0.96 PCB1 SSD1306 1
13 DC-DC-STEP-DOWN-LM2596 2,1 DC-DC-STEP-DOWN-LM2596 2
14 200Ω R3,R5 1206 2
15 2.2K R17 R1206 1
16 120 R10 AXIAL-0.3 1
17 20k R11,R12 AXIAL-0.3 2
18 10k R13,R14,R15,R16 AXIAL-0.3 4
19 165 R7 RES-TH_BD1.9-L3.3-P7.30-D0.5 1
20 165 0.1% R8,R9 RES-TH_BD1.9-L3.3-P7.30-D0.5 2
21 TLP624-1 U1,U2,U3,U5 DIP-4_L6.4-W4.6-P2.54-LS7.6-BL 4
22 RASPBERRYPI-B+-GPIO JP1 2X20-SHROUDED 1
23 MCP6022-XP U6 PDIP8_300MC 1

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