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STD HARD kart one-ESP32 board

License: Public Domain

Mode: Editors' pick

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Update time: 2022-07-17 14:48:04
Creation time: 2022-03-10 09:53:16
Description

this 1 ESP32 will have to do everything:

steering motor control,

pedal emulation (throttle control),

speed measurement (~4 rotary encoders),

communication with selfdriving PC,

?optical flow sensor?,

?some accel/gyro(s)?

 

then it'll probably need a double-checked pinout and maybe even a custom PCB.

This PCB will sit somewhere near the dashboard OR somewhere near the flow sensor (depending on whether 1Mhz I2C or 2Mhz SPI is more sensitive to long cables, and of course the placement of the optical flow sensor).

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 3.3v C1 CAP-D6.3XF2.5 1
2 5v C2 CAP-D6.3XF2.5 1
3 optional_cap C3 CAP-D6.3XF2.5 1
4 1N4007 D1 DO-41_BD2.4-L4.7-P8.70-D0.9-RD 1
5 SS14 D2 SMA_L4.4-W2.8-LS5.4-RD 1
6 Mini360 DC1,DC4 MINI360 2
7 3.3V regulator DC2,DC5 HDR-TH_3P-P2.54-V 2
8 AMS1117 DC3,DC6 SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR 2
9 Header-Female-2.54_1x15 H1,H2 DIP-1X15P2.54 2
10 Header-Female-2.54_1x13 H3 HDR-13X1/2.54 1
11 DT9 male H4,H5 DSUB-TH_DT1012X-H4WX-XF 2
12 (LITE) 13 pin switch J1 HDR-M-2.54_1X3 1
13 (LITE) EN pin switch J2 HDR-M-2.54_1X3 1
14 PC_comm serial jumper J3 HDR-M-2.54_1X3 1
15 5V from ESC jumper J4 HDR-M-2.54_1X2 1
16 ESC speed jumper J5 HDR-M-2.54_1X3 1
17 3.3V reg Vin J13 HDR-M-2.54_1X3 1
18 unknown connector, looks like PC ATX GPU-power JST1 IDC-TH_6P-P2.54_C11214 1
19 SMD LED LED1,LED3,LED5 LED-0805 3
20 LED-3MM LED2,LED4,LED6 LED-3MM/2.54 3
21 any transistor Q1,Q2 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-TR 2
22 pullup R1 0603 1
23 BOOT R2 0603 1
24 ADJ/short R3,R5 0603 2
25 ADJ_R1 R4,R6 0603 2
26 56K R7 0603 1
27 30K R8 0603 1
28 LED series-res R9,R12,R14 0603 3
29 LED series-res R10,R11,R13 AXIAL-0.4 3
30 68K R15,R20 AXIAL-0.4 2
31 34.8K R16 AXIAL-0.4 1
32 1.5K SDA pullup R17,R18,R25,R26 AXIAL-0.4 4
33 39K R19 AXIAL-0.4 1
34 22K? R21 AXIAL-0.4 1
35 2.7K? R22,R23 AXIAL-0.4 2
36 47K? R24 AXIAL-0.4 1
37 2Kish R27,R28 AXIAL-0.4 2
38 1.5K GPIO2 pulldown R29 AXIAL-0.4 1
39 SHORT SH1,SH3 SHORT_BOWTIE 2
40 RESET_SW SW1 KEY-TH_4P-L6.0-W6.0-P4.50-LS6.5 1
41 BOOT_SW SW2 KEY-TH_4P-L6.0-W6.0-P4.50-LS6.5 1
42 5v RELAY?, REPLACE ME! SW3 SW-TH_SK-12D02VG3 1
43 ESP32-WROOM-32_BOTTOMLESS U1 WIFIM-SMD_ESP-32S_BOTTOMLESS 1
44 LMV321IDBVR U3 SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR 1
45 ADS1015IDGSR U5 VSSOP-10_L3.0-W3.0-P0.50-LS4.9-BL 1
46 MCP6004-IP U4 DIP14 1

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