FINAL PROJECT
CONTENTS
Click on any of the links below to see further details about the final project.
- Project management: Checklist of the project's gradual development.
- Concept: General draft of the first conceived idea.
- 2D/3D design: Summary and steps of the design process.
- Electronic production and design: Details, design and production of the main board for the project.
- 3D printing, laser cutting and prototyping: Further details about the production of the robot's parts.
- Embedded, application and interface programming: Networking, motor control and web interface.
- Final project summary: Video demonstration, bill of materials, files of the final robot and general summary.
WATCHOBOT v0.2
VIDEO DEMONSTRATION OF WATCHOBOT v0.1 PROTOTYPE
DETAILS
Watchobot is an AtMega328p/Arduino compatible expandable learning platform or general purpose robot.
Watchobot is in development and it aims to be a track driven, low cost robot fully fabricated in the fablab.
Fab-Academy techniques used to fabricate the robot:
- 3D-Design: Design of prototypes.
- 3d-printing: Sprockets and tank tracks.
- Computer controlled cutting: Laser cutting of body.
- Electronics design and production: design of jc-watchobot family of boards.
- Mechanical design: From scratch design of 3d-printer friendly tank-tracks.
- Embedded programming and output devices: Stepper motor control.
- Input devices: Camera
- Output devices: stepper motors and servo motors.
- Neworking and communication: wifi-module and i2c communication.
- Interface and application programming: Website control of robot.
BILL OF MATERIALS - BOARD
Part Value Device Package Description MF MPN OC_FARNELL OC_NEWARK SUPPLIER TOLERANCE VALUE VOLTAGERATING ------------ ------------- ----------------- --------------- ----------------- ----------------- --------- ---------- -------- --------- ----- ------------- C1 22pF 0612ZC225MAT2A CAPC3216X178N Capacitor 1206 0612ZC225MAT2A - 12N3209 AVX ±20% 2.2µF 10V C2 22pF 0612ZC225MAT2A CAPC3216X178N Capacitor 1206 0612ZC225MAT2A - 12N3209 AVX ±20% 2.2µF 10V C3 10uF CAP1206 1206 Capacitor C4 1uF CAP1206 1206 Capacitor C5 100nF CAP1206 1206 Capacitor C6 100nF CAP1206 1206 Capacitor C7 47uF MCGPR50V107M8X11 MCGPR50V107M8X11 C8 100n CAP1206 1206 Capacitor C11 47uF MCGPR50V107M8X11 MCGPR50V107M8X11 C12 100n CAP1206 1206 Capacitor CRYSTAL 16Mhz CSM-7X-DU CSM-7X-DU SMD CRYSTAL unknown unknown EXTRA_PINS01 M02 02P AMP QUICK CONNECTOR unknown unknown EXTRA_PINS02 M01PTH M01PTH 1X01 Header 1 EXTRA_PINS03 M01PTH M01PTH 1X01 Header 1 FTDI M05 05P AMP QUICK CONNECTOR unknown unknown GND_PINS M04 04P AMP QUICK CONNECTOR unknown unknown GND_PINS1 M04 04P AMP QUICK CONNECTOR unknown unknown ICSP M06 06P AMP QUICK CONNECTOR unknown unknown LED_GREEN LED1206 1206 MICRO ATMEGA328P-AU ATMEGA48/88/168-AU TQFP32-08 MOTORA M04 04P AMP QUICK CONNECTOR unknown unknown MOTORA_CARRIER A4988BREAKOUT A4988BREAKOUT A4988BREAKOUT MOTORB M04 04P AMP QUICK CONNECTOR unknown unknown MOTORB_CARRIER A4988BREAKOUT A4988BREAKOUT A4988BREAKOUT MS3B1 M02 02P AMP QUICK CONNECTOR unknown unknown MS3B2 M02 02P AMP QUICK CONNECTOR unknown unknown R0 0 RESISTOR1206 1206 Resistor R1 10k RESISTOR1206 1206 Resistor R2 499 RESISTOR1206 1206 Resistor R3 0 RESISTOR1206 1206 Resistor RST1 M01PTH M01PTH 1X01 Header 1 SCL_PINS M04 04P AMP QUICK CONNECTOR unknown unknown SDA_PINS M04 04P AMP QUICK CONNECTOR unknown unknown SWITCH 6MM_SWITCH6MM_SWITCH 6MM_SWITCH OMRON SWITCH VCC_PINS M04 04P AMP QUICK CONNECTOR unknown unknown VCC_PINS1 M04 04P AMP QUICK CONNECTOR unknown unknown
BILL OF MATERIALS - OTHERS
|------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | PART | QUANTITY | PRICE P/UNIT | TOTAL PRICE | AVAILABLE AT: | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | Pololu Nema 14 | 2 | 12.95USD | 25.90USD | https://www.pololu.com/product/1208 | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | Pololu A4988 stepper motor carrier | 2 | 5.95USD | 11.90USD | https://www.pololu.com/product/1182 | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | PLA coil black | | 37.95EUR | approx. 13EUR | https://www.innofil3d.com/product/pla-black-2-85mm-750gr/ | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | CMU5 pixy cam | 1 | 49.99EUR | 49.99EUR | ebay.com | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | 1000mAh 3S lipo battery | 1 | 6.35USD | 6.35USD | https://hobbyking.com/ | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | 9V battery | 2 | 1.25EUR | 2.50EUR | https://www.reichelt.de/ | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | 3mm mdf | 1 | VARIES | NA | http://www.holzland-guetges.de/ | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------| | 4mm acrylic | 1 | VARIES | NA | https://www.stegplatten.com/ | |------------------------------------+----------+--------------+---------------+-----------------------------------------------------------|
ASSEMBLY
Assembly details of watchobot v.0.1 can be found here.
FILES
Track - tank treads v2.0 - print 22
Track - sprockets - print 4
Nema14 3mm MDF frame design - (for v.0.1) laser cut 1
Top frame 4mm thickness camera mount - (for v.0.1) laser cut 1
Sprocket mounting hub - print 4
jc-watchobot-v3.0 board eagle files
jc-watchobot v3.0 inner - mill 1
Pan and tilt frame - print 1
watchobot v.0.2 3d printed body - (optional for v.0.2) print 1