2 layers
Display arm101
Gordon-coder/Robotic-Arm-Fallen-2026
Robotic Arm project for Hack Club's Fallen Event 2026
31 parts
2 layers60 × 55 mm
Robotic Arm PCB MAIN
Gordon-coder/Robotic-Arm-Fallen-2026Robotic Arm project for Hack Club's Fallen Event 2026
- Size
- 60 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 62
- Pads
- 170
- Tracks, vias
- 160, 16
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Nov 2026
- Updated
- 7 Nov 2026
Overview
Robotic Arm PCB MAIN is an open-source printed circuit board by Gordon-coder, from the Gordon-coder/Robotic-Arm-Fallen-2026 repository on GitHub. It is a 2-layer board of 60 × 55 mm with 36 parts on 62 nets, routed with 160 tracks and 16 vias.
It is built around the ESP32-WROOM-32, PCA9685PW and AMS1117-3.3. Its parts include 16 resistors, 11 connectors, 3 ICs, 2 capacitors and 2 diodes. It belongs with the ESP32 boards of this library.
Main components
3
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
PCA9685PW
TSSOP-28-40℃~+85℃ 100kHz~1MHz 16 2.3V~5.5V 25mA 5.5V Built-in PWM TSSOP-28 LED Drivers ROHSNXP SemiconductorsLED Drivers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdRobotic Arm
This is the github repo for the Robotic Arm Project in Hack Club's Fallen 2026.
Hardware
We have decided to make seperate pcbs for the different parts of the robotic arm to increaase modularity and speed up development. the modules are connected either through a uart line or the ESP-NOW protocol.
PCB for the main arm
Schematic for the main arm
Team Members
- Gordon Peng
- Manvith
- Sarthak Vishwakarma
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 220Ω | PCM_JLCPCB:R_0603 | R9, R10, R11, R12, R13, R14, R15, R16 |
| 8 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2, J3, J4, J5, J6, J8, J9, J10 |
| 4 | 10kΩ | PCM_JLCPCB:R_0603 | R3, R4, R5, R6 |
| 2 | 1.1kΩ | PCM_JLCPCB:R_0603 | R7, R8 |
| 2 | 4.7kΩ | PCM_JLCPCB:R_0603 | R1, R2 |
| 2 | Red | PCM_JLCPCB:D_0603 | D1, D2 |
| 2 | Switch | Button_Switch_SMD:SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG | SW1, SW2 |
| 1 | 1000uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | 10uF | PCM_JLCPCB:C_0603 | C2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U1 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J11 |
| 1 | PCA9685PW | Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm | U2 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J7 |
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Questions
How big is the Robotic Arm PCB MAIN PCB?
It measures 60 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Robotic Arm PCB MAIN use?
36 parts, built around the ESP32-WROOM-32, PCA9685PW and AMS1117-3.3. 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 Robotic Arm PCB MAIN KiCad files?
From the Gordon-coder/Robotic-Arm-Fallen-2026 repository on GitHub, at the commit this page was made from: the board is Robotic-Arm/PCB/Robotic-Arm-PCB-MAIN/Robotic-Arm-PCB-MAIN.kicad_pcb and its schematic Modules/Controller/Display arm101/Display arm101.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Robotic Arm PCB MAIN design in my own project?
Its repository states no licence, so its author keeps all rights: ask Gordon-coder before reusing the design.