2 layers55 × 80 mm
Board esp32 v2
sudomesh/disaster-radio
A (paused) work-in-progress long-range, low-bandwidth wireless disaster recovery mesh network powered by the sun.
101 parts1.1k
2 layers50 × 50 mm
Encoder pcb
peterwallhead/slambot_encoder_pcb1The PCB to interface with the wheel encoders and run the SLAMBOT Encoder Publisher app.
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 41
- Pads
- 124
- Tracks, vias
- 139, 14
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 23 May 2025
- Updated
- 25 May 2025
Overview
Encoder pcb is an open-source printed circuit board by peterwallhead, from the peterwallhead/slambot_encoder_pcb repository on GitHub. It is a 2-layer board of 50 × 50 mm with 28 parts on 41 nets, routed with 139 tracks and 14 vias.
It is built around the ESP32-WROOM-32U and LT1117IST-3.3#PBF. Its parts include 7 connectors, 4 capacitors, 4 resistors, 3 diodes and 2 ICs. It belongs with the ESP32 boards of this library.
Main components
2
ESP32-WROOM-32U
SMD,19.2x18mm-40℃~+85℃ -97dBm 2.4GHz 20.5dBm 3V~3.6V Bluetooth4.2 ESP32-DOWD UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC、CAN SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LT1117IST-3.3#PBF
SOT-223-3-40℃~+125℃@(Ta) 1 1.2V@(800mA) 10mA 15V 3.3V 75dB@(120Hz) 800mA Fixed Over Current Protection Positive SOT-223-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAnalog DevicesVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 150 Ohms | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3, R4 |
| 2 | 10 uf | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I_Pad1.58x1.35mm_HandSolder | C3, C4 |
| 1 | 1 uf | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 1 | 10 Kohms | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | 100 uf | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | ESP32-WROOM-32U | RF_Module:ESP32-WROOM-32U | U1 |
| 1 | GREEN LEFT | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2 |
| 1 | GREEN RIGHT | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3 |
| 1 | LEFT ENCODER (HEADER) | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J6 |
| 1 | LEFT ENCODER (JST) | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J3 |
| 1 | LOGO | kicad-logos:ros-2-icon | G*** |
| 1 | LOGO | kicad-logos:micros-ros-icon | G*** |
| 1 | LT1117IST-3.3 | legacy:SOT230P700X180-4N | IC1 |
| 1 | POWER | digikey-footprints:Term_Block_1x2_P5.08MM | J1 |
| 1 | PROG | digikey-footprints:Switch_Tactile_THT_6x6mm | S2 |
| 1 | RED LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
| 1 | RIGHT ENCODER (HEADER) | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J7 |
| 1 | RIGHT ENCODER (JST) | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J4 |
| 1 | RST | digikey-footprints:Switch_Tactile_THT_6x6mm | S1 |
| 1 | TTL PROG (HEADER) | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | TTL PROG (JST) | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J2 |
Questions
How big is the Encoder pcb PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Encoder pcb use?
28 parts, built around the ESP32-WROOM-32U and LT1117IST-3.3#PBF. 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 Encoder pcb KiCad files?
From the peterwallhead/slambot_encoder_pcb repository on GitHub, at the commit this page was made from: the board is encoder_pcb.kicad_pcb and its schematic encoder_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Encoder pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask peterwallhead before reusing the design.
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