The past week has been about doing enough detailed design to get long lead time components on order.

The parts kit from STMicroelectronics and TE Connectivity came in and I have been looking through the datasheets.

Some parts I ordered have also come in and I've been designing a 3D printed nozzle to test the feasibility of the printing concept, so I can blog about the tangible parts.

Here is a video which explains what arrived plus some initial thoughts on the project:


Here is the pinout of the TE Connectivity load cell - you can see what I mean about the silk screen being partly obscured by the gasket:

V- and V+ are excitation supply pads. O- and O+ are output signal pads.

The pin pads in the image look black although the actual pads look solderable in person.


Now that we have the sizes of all the sensors, the next order of business is to get the custom PCBs designed so they can be ordered.


Relevant Links

Sixth Sense Design Challenge: About This Challenge

Sixth Sense Design Challenge: Technical Documents

Sixth Sense Design Challenge


GraffitiBot Project Blogs

Sixth Sense GraffitiBot - blog 1

Sixth Sense - Kit Unboxing and Other Parts - GraffitiBot blog 2

Sixth Sense - Sensor Circuits - GraffitiBot blog 3

Sixth Sense - Interfaces - GraffitiBot blog 4

Sixth Sense GraffitiBot - System Interconnect - blog 5

Sixth Sense GraffitiBot - Wheels & Motors - blog 6

Sixth Sense GraffitiBot - ST Sensor Tile App - blog 7

Sixth Sense - Load Cell PCB - GraffitiBot blog 8

Sixth Sense - Magnetic Angle Sensor - GraffitiBot - Blog 9

Sixth Sense - LCD Interface - GraffitiBot - blog 10

Sixth Sense - Pump Controller - GraffitiBot Blog 11

Sixth Sense Main Drive Motor - GraffitiBot - blog 12

Sixth Sense Motor Controller Mods - GraffitiBot blog 13

Sixth Sense - RTD - GraffitiBot Blog 14

Sixth Sense Mechanical Design - GraffitiBot Blog 15

Sixth Sense GraffitiBot Motor Wiring - Blog 16

Sixthe Sense GarffitiBot - First Dry Run - Blog17

Sixth Sense GraffitiBot Hydraulics - Blog 18

Sixth Sense GraffitiBot Printing Graffiti - Blog 19

Sixth Sense GraffitiBot - Summary - Blog 20