schimen/killer-robot3This repository contains firmware, hardware design and control software for Rupert, the killer robot. Rupert competes in the robot wars at Omega Verksted and other smaller robot war events.
Robot pcb is an open-source printed circuit board by schimen, from the schimen/killer-robot repository on GitHub. It is a 2-layer board of 61.6 × 47 mm with 51 parts on 39 nets, routed with 337 tracks and 35 vias.
It is built around the ESP32-WROOM-32 and LM1117-3.3. Its parts include 13 capacitors, 11 resistors, 9 connectors, 3 ICs and 3 switches. It belongs with the robots and motor control boards and the ESP32 boards of this library.
This is the PCB that controls Rupert. It consists of a ESP32 microcontroller that communicates over bluetooth. Motors are controlled via motor-driver and via pwm outputs.
Schematic:
<img pcb-schematic src=../images/robot-pcb.png>
PCB 3d render:
<img pcb-render src=../images/pcb-render.png>
| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | TestPoint | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP1, TP2, TP3, TP4, TP5, TP6 |
| 4 | 100 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R5, R6 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R8, R11 |
| 4 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J6, J7, J8, J9 |
| 3 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C5 |
| 2 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6, C11 |
| 2 | 68 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R10 |
| 2 | Conn_01x03_Male | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J4, J5 |
| 2 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D2 |
| 2 | SW_Push | robot-pcb_custom:wurth_tactile_sw | SW1, SW2 |
| 1 | 100u | Capacitor_SMD:CP_Elec_6.3x7.7 | C7 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 220n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
| 1 | 22n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 1 | 22u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 470n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12 |
| 1 | Conn_01x05_Female | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J2 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x03_P1.27mm_Vertical_SMD | J1 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J3 |
| 1 | DRV8935 | Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x5.4mm | U3 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U1 |
| 1 | LM1117-3.3 | Package_TO_SOT_SMD:SOT-223 | U2 |
| 1 | LOGO | robot-pcb_custom:rupert_bitmap_art | G*** |
| 1 | SW_DPST_x2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | SW3 |
The 48 most common of 51 parts.
It measures 61.6 × 47 mm and has 2 copper layers, 1.6 mm thick.
51 parts, built around the ESP32-WROOM-32 and LM1117-3.3. 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.
From the schimen/killer-robot repository on GitHub, at the commit this page was made from: the board is robot-pcb/robot-pcb.kicad_pcb and its schematic robot-pcb/robot-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask schimen before reusing the design.
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