Mar
25
Mon

Shenzhen Mini Maker Faire

Renbotics will be at the Shenzhen Mini Maker Faire on the 6th of April.

Feb
24
Sun

NEW TinyQED and Tindie

The TinyQED is an ATTiny45 based widget that makes quadrature encoder counts available via I2C. The counts can easily be read from an Arduino or similar using the Wiring library.

After many years of procrastination, 2008, to 2010 to today, the TinyQED is finally available.

Since I do not do this full time, the time required to create the tools, documentation, and facilitate the knowledge transfer with third party manufacturers is simply too much. For the quantities that I sell I can manufacture the kits myself and ensure quality is to the standard I want. Thus I have decided to start selling on Tindie, with the TinyQED and Prototype Side Shield kits being trial products. Checkout the products on Tindie, more to come soon.

I sell on Tindie

Feb
17
Sun

FAQ beginnings

Customers regularly ask similar questions. To make it easy to get answers below are the initial entries for the new FAQ.

Testing was done using an Arduino Uno R3, Servo Shield 2, Hobby Wing 8A UBEC, Turnigy 4500mAh 2C Li-Po, 8 Hextronik HXT 900 servos, 6 Hextronik HX5010 servos and 2 RobotBase RB-421 servos. Measurements were preformed with an Agilent U1272A.

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Dec
21
Fri

Find the address of your Servo Shield 2

Cant find the address of your Servo Shield 2? Use the sketch below adopted from the i2c_scanner on the Arduino Playground.

Remember the PCA9685 used by the Servo Shield 2 has two reserved addresses, 80 and 112.

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Dec
9
Sun

Fritzing Component

Fritzing is an excellent tool for prototyping, documentation, etc. To make all these activities easier for the Servo Shield we created a Fritzing component. Over the next several weeks all blog entries will be updated to use the new Fritzing graphics and Servo Shield Rev 2. Download the Fritzing component from GitHub.

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Nov
26
Mon

NEW Servo Shield 2

The Servo Shield 2 based on the PCA9685, is now available. The new shield uses only two pins via I2C to provide 16 free-running servo outputs. Up to 62 shields can be used to control 992 servos from a single Arduino. The new shield uses none of the hosts timers, less RAM, and makes it easier to connect 16 servos than before. Now available from SeeedStudio and Sedonia Technologies.

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Jan
9
Sun

GIT

The latest versions of all Libraries, Hardware designs and Documents are now hosted at GitHub. https://github.com/renbotics

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Jun
13
Sun

Robotic Arm Inverse Kinematics with Arduino and Servo Shield

Circuits@Home replaced the control system of a Lynxmotion AL5D robotic arm with an Arduino and a Servo Shield. More information at Circuits@Home

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Featured Product:

Renbotics Servo Shield 2

Features:
  • 16 Servo Channels
  • Convenient screw terminal for servo power supply
  • 196 Point breadboard style prototyping area
  • Compatible with Arduino Duemilanove, UNO, Leonardo and Arduino Mega 2560
  • Dip switch to easily set and/or change address
  • 50Hz or 60Hz mode
  • Easy to use API
Applications:
  • Robotics
  • Animatronics
  • Mechatronic Art