Open Source Turtle Robot Kit Teaches Beginners & Creates Beautiful Art

 writes on the Tindie blog about this robotics kit from The Maker’s Box:


Open Source Turtle Robot Kit Teaches Beginners & Creates Beautiful Art

The Open Source Turtle Robot (OSTR) was created as the basis for a two-day workshop where high school students could gain hands-on experience with engineering concepts. The finished robot even creates interesting pieces of art via pen plotting with Turtle graphics.


The project is Arduino compatible for ease of programming and powered by 4 AA batteries to make it cost effective. Stepper motors were chosen for accurate motion, and the parts were 3D printed for easy customization.

Open Source Turtle Robot Kit Teaches Beginners & Creates Beautiful Art

Tindie seller: Renier van der Lee & Vinduino

From  on the Tindie blog:

Seller Feature: Renier van der Lee & Vinduino LLC

Renier van der Lee is the father of three kids, a technology enthusiast, and a self-proclaimed “gentleman farmer,” which sounds incredibly official on its own. He is also a Tindie seller who created the award-winning Vinduino sensor, which has seen massive growth and sales both on Tindie and beyond since its inception.

Join us as we explore the history and proliferation of this unique and endlessly useful device that has a huge impact on water conservation and savings for growers.

renier-van-der-lee (1).png

What is Vinduino, and How Does it Work?

Vinduino is a water-saving irrigation project for vineyards, but it has applications for all types of growers who live in drought-ridden countries. Vinduino utilizes a gypsum soil moisture sensor to accurately measure the moisture present around the roots of a plant.

It was originally designed for use in vineyards, where it can be connected to several long-range RF LoRA modules and charged by solar power. All of this is connected to the irrigation system. When the sensor detects a drop in moisture, the sprinklers turn on, and not a moment before.


The concept won the Best Product award during the 2015 Hackaday Prize, which aims to find projects that have potential as a product people would want. Vinduino was also selected for residency in the SupplyFrame Design lab.

Renier first tested his VInduino installation on his own vineyard. Prior to the creation of Vinduino, he was spending over $4,300 each year on a vineyard management company to ensure his vines were watered.

Once he switched over to Vinduino, he didn’t need their assistance anymore. Over the course of a single year, he managed to save 430,000 gallons of water, which equates to $1,925 in cost savings. The entire installation costs $635. It offers a great return on the investment almost immediately and represents a viable solution for the ongoing water shortages in California and across the world.

Tindie seller: Renier van der Lee & Vinduino

New Laser Time of Flight Breakout Board

From  on the Tindie blog:


New Laser Time of Flight Breakout Board Brings Out The Best in VL53L1 Long-Range Sensors

Watching your robotic creation take flight is an incredible feeling, but watching it collide with something or crash can make your stomach turn. One common sensor you may reach for in a case like this is the VL53L0. But it only provides ranging to a distance of 2 meters. For many of us, this is just shy of a range we would be comfortable with.


Thankfully, a new sensor has appeared which doubles the range. The VL53L1 extends the accurate distance detection to 4 meters. It also uses a patented ranging technology that harnesses time-of-flight from a 940 nm laser.

This results in estimation independent of surface reflectivity and high accuracy in a variety of weather and environmental conditions. This breakout board sold by Pesky Products is designed to bring out all the best capabilities of the VL53L1 from ST Microelectronics.


New Laser Time of Flight Breakout Board

TritiLED Flashes for 20 Years on a Single Coin Cell

From  on Tindie blog:


TritiLED Flashes for 20 Years on a Single Coin Cell

Ted Yapo had a small problem. As an amateur atronomer and astrophotographer, he needed a way to mark his expensive equipment so that he wouldn’t trip over it in the dark. Glow-in-the-dark materials were out because of they only glow for a short time, and glow sticks were also less than ideal because of their single-use nature. Tritium light sources would be perfect, barring the small details that they’re radioactive, expensive, and in the US only a few uses are allowed, most are prohibited by law.


So Yapo instead came up with an LED light that can run for not 20 hours, or even 20 days, but 20 yearson a single CR2032 coin cell battery!

TritiLED Flashes for 20 Years on a Single Coin Cell