2 layers116.8 × 30 mm
Type d
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
14 parts3kApache-2.0
2 layers42 × 27 mm
GEOFF board v1
greenpanda111/GEOFF_RDACFiles relating to my 3rd year robotics design and construction module.
- Size
- 42 × 27 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 10
- Pads
- 34
- Tracks, vias
- 43, 3
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Oct 2024
- Updated
- 28 Jan 2025
Overview
GEOFF board v1 is an open-source printed circuit board by greenpanda111, from the greenpanda111/GEOFF_RDAC repository on GitHub. It is a 2-layer board of 42 × 27 mm with 14 parts on 10 nets, routed with 43 tracks and 3 vias.
Its parts include 4 resistors, 4 connectors, 2 capacitors and 2 transistors. It belongs with the robots and motor control boards of this library.
README
README.mdGEOFF
3rd Year Engineering Module
GEOFF is a 2 wheeled skid steered maze solving robot consisting of: 2 motors with an ecoder each The encoders are wired to the ARB board using the expected pins as well as spare GPIO for the ultrasonics.
4 IR sensors Two on the front for wall alignment using triganometry to calculate the angle to turn and for a wider field of view. One on either side of the robot for measuring the distance to the left and right of the robot.
2 Ultrasonic sensors These are not currently utilised but my CAD design allows for them to be freely rotated so could be added for improved mapping capabilities in future.
4 LED NeoPixel panels These form a 16x16 LED matrix to display live mapping of obstacles and route travelled along with current location and heading. The graphics library (All three NeoPixel libraries are created by Adafruit) used can allow for easy debugging. For example: writing the current angle onto the screen to test if it is being updated correctly as the robot turns.
The Neopixel matrix can be controlled with one 5V signal pin. To achieve this, I had to design a level shifter to control it with the arduinos 3V3 signal
2 Microswitches attached to the front corners of the robot to create a front bumper These prevent the robot from crashing into obstacles that the front IRs did not detect or catching on corners
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4 |
| 2 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2 |
| 2 | C | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C1, C2 |
| 2 | TestPoint | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP1, TP2 |
| 1 | Arduino Pins | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | Bumper Switch Pins | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | Output | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | inputs | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
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Questions
How big is the GEOFF board v1 PCB?
It measures 42 × 27 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GEOFF board v1 use?
14 parts. 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 GEOFF board v1 KiCad files?
From the greenpanda111/GEOFF_RDAC repository on GitHub, at the commit this page was made from: the board is GEOFF board v1/GEOFF board v1.kicad_pcb and its schematic GEOFF board v1/GEOFF board v1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GEOFF board v1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask greenpanda111 before reusing the design.