alegoldstein/CycloSenseFirmware, PCB Files, 3D Models, and photos of CycloSense. This project is a bike computer with offline navigation, predictive maintenence, and metric tracking displayed to the user on a screen as well as on a website hosted by an ESP32.
EE327 - UI + GPS is an open-source printed circuit board by alegoldstein, from the alegoldstein/CycloSense repository on GitHub. It is a 4-layer board of 34.7 × 49 mm with 18 parts on 52 nets, routed with 245 tracks and 84 vias.
It is built around the ESP32-WROOM-32E-N4 and LDL1117S30R. Its parts include 5 connectors, 3 capacitors, 3 resistors, 3 diodes and 2 ICs. It belongs with the radio and wireless boards and the ESP32 boards of this library.
This repository contains the files for the firmware, PCB design, and 3D models used to create our bike computer named CycloSense. CycloSense was created to be a bike computer for the everyday bike user, affordable, easy to use, and includes predictive maintenance alerts and offline navigation.
Objective: Create a bike computer to provide local navigation, predict maintenence, and display metrics
Steps Taken:
Outcome: A bike computer prototype that successfully tracks speed and provides navigation while showcasing predictive maintenance using edge AI.
PCB Schematic
PCB Rendering
 Full system mounted to handlebar |
 Model of 3D printed enclosure |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | D_Schottky | EE327_Symbols:Schottky | D1, D2 |
| 2 | SW_Push | EE327_Symbols:pushbutton | SW1, SW2 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | 330R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | Conn_01x04_Socket | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x06_Pin | EE327_Symbols:1x6 JST | J3 |
| 1 | Conn_01x08_Socket | EE327_Symbols:CONN_B08B-PNDZS-1_JST | J5 |
| 1 | Conn_01x09_Socket | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J1 |
| 1 | Conn_01x14_Socket | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J2 |
| 1 | ESP32-WROOM-32E-N4 | EE327_Symbols:ESP32WROOM32E_EXP | U1 |
| 1 | LDL1117S30R | EE327_Symbols:Voltage Regulator | U3 |
| 1 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
alegoldstein/CycloSense
Firmware, PCB Files, 3D Models, and photos of CycloSense. This project is a bike computer with offline navigation, predictive maintenence, and metric tracking displayed to the user on a screen as well as on a website…
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It measures 34.7 × 49 mm and has 4 copper layers, 1.6 mm thick.
18 parts, built around the ESP32-WROOM-32E-N4 and LDL1117S30R. 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 alegoldstein/CycloSense repository on GitHub, at the commit this page was made from: the board is PCB/EE327 KiCAD Files/EE327 - UI + GPS/EE327 - UI + GPS.kicad_pcb and its schematic PCB/EE327 KiCAD Files/EE327 - Battery Management/EE327 - Battery Management.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 alegoldstein before reusing the design.