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2 layers99 × 74 mm8bots, the printed circuit board in 3D
Size
99 × 74 mm
Copper layers
2
Thickness
1.6 mm
Parts
41
Nets
66
Pads
164
Tracks, vias
359, 20
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
4 Dec 2021
Updated
11 Mar 2025

Overview

8bots is an open-source printed circuit board by YuseiIto, from the YuseiIto/eightbots repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 99 × 74 mm with 41 parts on 66 nets, routed with 359 tracks and 20 vias.

It is built around the CH340E and ESP32-WROOM-32. Its parts include 10 capacitors, 8 resistors, 5 ICs, 5 connectors and 4 diodes. It belongs with the ESP32 boards of this library.

Main components

2

README

README.md

8-puzzle-bots

Parts

41
QtyValueFootprintReferences
70.1uFCapacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mmC1, C2, C3, C6, C7, C8, C9
510kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_HorizontalR3, R4, R9, R10, R11
31kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_HorizontalR6, R7, R8
2LEDLED_THT:LED_D3.0mmD2, D3
1100uFCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC10
110uFCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC4
122uFCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC5
19V INConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ1
1AZ1084-3.3Package_TO_SOT_SMD:TO-252-3_TabPin2U2
1BuzzerBuzzer_Beeper:Buzzer_12x9.5RM7.6BZ1
1CH340EPackage_DIP:DIP-10_W7.62mm_LongPadsU4
1DDiode_THT:D_A-405_P10.16mm_HorizontalD4
1DRV8833 ModuleDRV8833_Module:DRV8833_ModuleU5
1ESP32-WROOM-32ESP32:ESP-32SBoardU1
1GY-521GY-521:GY-521_Part_side_upU3
1LED_RABGLED_THT:LED_D5.0mm-4_RGBD1
1Motor BATConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ5
1Motor LConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ4
1Motor RConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ3
1RotaryEncoder_SwitchRotary_Encoder:RotaryEncoder_Alps_EC12E-Switch_Vertical_H20mmSW1
1SSD1306SSD1306:128x64OLEDBrd1
1SW_SPDTAKI_Toggle_SW:SPDT_With_Mounting_HoleSW3
1SW_SPDTButton_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2QSW4
1USB_B_MicromicroUSB-board:MicroUSBBoardJ2

The 37 most common of 41 parts.

Questions

How big is the 8bots PCB?

It measures 99 × 74 mm and has 2 copper layers, 1.6 mm thick.

What parts does the 8bots use?

41 parts, built around the CH340E and ESP32-WROOM-32. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the 8bots KiCad files?

From the YuseiIto/eightbots repository on GitHub, at the commit this page was made from: the board is board/electronics/8bots.kicad_pcb and its schematic board/electronics/8bots.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the 8bots design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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