Robot Project 2021 Notes: Difference between revisions
From HacDC Wiki
Ubuntourist (talk | contribs) No edit summary |
Ubuntourist (talk | contribs) No edit summary |
||
Line 41: | Line 41: | ||
STOP RUN | STOP RUN | ||
MOTORS MOTORS</pre> | MOTORS MOTORS</pre> | ||
----- | |||
== Wheel Motor Assembly == | |||
* Geez! They weren’t kidding! Getting the front motor mounts over the big motors was a PITA! Ultimately, brute forcing it with my hand rather than pliers proved the most successful. | |||
* The rear motor mounts were only slightly better. | |||
* Mounting the assemblage to the bottom chassis, I was sure I was going to snap something in two or tear out a wire. | |||
* The motor I’ve mounted on the right side has a black wire whose solder point looks suspect… | |||
----- | |||
== Line folowing sensors == | |||
* The pins should be sticking out on the smooth side of the “bottom” mount. | |||
* By contrast, this slipped together so easily that I worry it might be too loose, though it will undoubtedly tighten up when mounted to the chassis. | |||
* This tutorial seems to be a thinly disguised advertisment for electrical tape… | |||
----- | |||
== Chassis == | |||
* 10-year-olds my ass. This required a hell of a lot of strength to snap the chassis together without snapping. | |||
* Don’t forget: there are '''eight''' snap points: Four at the corners and two above the wheels. I got the outer four, and didn’t notice the wheel ones until after the fact. It took forever to get those to snap into place. | |||
----- | ----- |
Revision as of 14:11, 9 February 2021
Sparkfun Red Hat Co.Lab Robot
(BBC micro:bit + Sparkfun moto:bit)
Sparkfun moto:bit Carrier Board
The moto:bit - micro:bit Carrier Board (Qwiic) uses a Qwiic interface? and offers pins for:
- six 3-pin sensors,
- two 3-pin servo motors
- two 2-pin “big” motors
and an I2C bus (as well as a Qwiic “port” and power switch)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ micro:bit CONNECTOR BUS ANALOG DIGITAL DIGITAL ONLY | | +-+----+-------+ +------+------+-+ | | | | | | SCL ☐ P0 • • P1 P2 • • P8 P12 • • P14 P15 • • P16 SDA ☐ 3V3 • • 3V3 3V3 • • 3V3 3V3 • • 3V3 VCC • • VCC 3V3 ☐ GND • • GND GND • • GND GND • • GND GND • • GND GND ☐ SENSOR SENSOR SENSOR SERVO I2C BUS BLACK • LEFT RIGHT • RED RED • MOTOR MOTOR • BLACK POWER IN INPUT RANGE VCC: 3 - 11V QWIIC STOP RUN MOTORS MOTORS
Wheel Motor Assembly
- Geez! They weren’t kidding! Getting the front motor mounts over the big motors was a PITA! Ultimately, brute forcing it with my hand rather than pliers proved the most successful.
- The rear motor mounts were only slightly better.
- Mounting the assemblage to the bottom chassis, I was sure I was going to snap something in two or tear out a wire.
- The motor I’ve mounted on the right side has a black wire whose solder point looks suspect…
Line folowing sensors
- The pins should be sticking out on the smooth side of the “bottom” mount.
- By contrast, this slipped together so easily that I worry it might be too loose, though it will undoubtedly tighten up when mounted to the chassis.
- This tutorial seems to be a thinly disguised advertisment for electrical tape…
Chassis
- 10-year-olds my ass. This required a hell of a lot of strength to snap the chassis together without snapping.
- Don’t forget: there are eight snap points: Four at the corners and two above the wheels. I got the outer four, and didn’t notice the wheel ones until after the fact. It took forever to get those to snap into place.