Summary of BEAT THE STREETS WITH THIS TEXT SPRAYING ROBOT
The Strettexter is a portable robot designed to spray text onto streets for climate change awareness. It mounts eight spray cans on a skateboard, controlled by an Arduino Uno and servo motors to create 5×8 bit font characters. Powered by an 8000mAh battery, the device uses an encoder to track distance and requires manual activation by pulling the board. The creator warns that shorter words may be less legible due to spacing issues and advises users to exercise discretion regarding vandalism laws.
Parts used in the Strettexter:
- Spray cans (8 units)
- Wooden box with ledge
- Skateboard
- PWN/Servo shield
- Arduino Uno
- TowerPro SG90 servo motors (8 units)
- Power bank (8000mAh)
- Safety switch
- Encoder for horizontal distance measurement
In the midst of striking for climate change awareness, you may need some extra hands. That’s what [Anred Zynch] thought when they built Strettexter, the text-spraying writing robot that sprays onto streets.
The machine is loaded with 8 spray cans placed into a wooden box (a stop line with a wooden ledge to prevent the cans from falling out) and is fixed on top of a skateboard. It uses a PWN/Servo shield soldered onto an Arduino Uno connected to 8 servo motors (TowerPro SG90s) to control each of the spray bottles. A table converts every character into 5×8 bit fonts to fit the size of the spraying module. The device also includes a safety switch, as well as an encoder for measuring the horizontal distance traveled.
The Strettexter is activated by pulling on the skateboard once it’s been set up and connected to power (for portability, it uses a 8000mAh power bank). In its current configuration, the words stretch out pretty long, but some additional testing will probably lead to better results depending on the constraints of your canvas. The shorter the words, the more difficult it is for the white text to be legible, since there is significant spacing between printed bits.
We don’t condone public vandalism, so use this hack at your own discretion.
Source: BEAT THE STREETS WITH THIS TEXT SPRAYING ROBOT
- What is the primary purpose of the Strettexter?
The machine is built to spray text onto streets for climate change awareness. - How does the device control the spray bottles?
It uses a PWN/Servo shield connected to an Arduino Uno and eight TowerPro SG90 servo motors. - What powers the Strettexter for portability?
The device runs on an 8000mAh power bank. - How is the horizontal distance measured during operation?
An encoder is included to measure the horizontal distance traveled. - How do you activate the robot once it is set up?
You activate the Strettexter by pulling on the skateboard after connecting it to power. - What character format does the table convert input into?
The table converts every character into 5×8 bit fonts to fit the spraying module size. - Why might shorter words be difficult to read with this device?
Shorter words are harder to make legible because there is significant spacing between printed bits. - Does the creator condone using this device for public vandalism?
No, the creators do not condone public vandalism and advise using the hack at your own discretion.
