Kevinbot Core Docs
The Kevinbot Core is a Parallax Propeller 2 Edge Breakout Board catered for robotics use. Originally designed only for use in Kevinbot v3, the board can be used for any P2-based robotics project.
Revision Comparisons
| Feature | RevA | RevB |
|---|---|---|
| MCU | Parallax P2 | Parallax P2 |
| Input Voltage | 5V | 6V ~ 40V |
| I/O Pins | 32 (Accessory), 20 (Expansion) | 32 (Accessory) |
| Servo Ports | 32 (Up to 6V power) | 16 (Up to 24V power) |
| Interfaces | UART, I2C, One-Wire | RS-422 (or UART), I2C, One-Wire |
| Serial Interface | ✅ UART | ✅ RS-422 (or UART) |
| I2C Interface | ✅ 4 Ports | ✅ 1 Port with Active Pullup |
| One-Wire Interface | ✅ 4 Ports | ✅ 1 Port with Active Pullup |
| Programming | PropPlug Interface | USB-C or External |
| Inbuilt Sensors | DS18B20 Thermo | DS18B20 Thermo |
| Voltmeters | 2x Up to 33v | 2x Up to 60v + Input meter (Up to 40v) |
| Error Buzzer | ✅ | ✅ |
| NeoPixel Output | ✅ | ✅ |
| Status Light Output | ✅ | ✅ |
| Reset Button and Header | ✅ | ✅ |
Specifications
- Compatible with standard P2 Edge (will not work with the 32 MB option)
- USB-C FTDI Programming Interface
- 16 Servo Outputs
- One-Wire with Active Pullup
- I2C with Active Pullup
- RS-422
- Status Light Port
- Internal Input Voltmeter (1v ~ 40v) + Two External Voltmeters (1v ~ 60v)
- Level-Shifted Addressable LED port
- Four 2x6 P2 accessory headers
- Internal and External Error Buzzer
- Reset Button and External Reset button port
- Internal DS18b20 thermometer
- Fully Open Source Design
License
All hardware is licensed under the CERN-OHL-S-2.0 license. Documentation and media (images) are licensed under a CC-BY-SA-4.0 license.
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