Page 188 - Programming the Photon Getting Started With the Internet of Things

SeeedStudio is based in Shenzhen, China, and the United States. Having access to the
Far East market makes them a prime supplier for all hardware components. Not only does
Seeed have a wide range of electrical components at very low cost; they also offer a wide

range of services, from manufacturing to 3D printing to laser cutting and more. Check out
their website for further information (www.seeedstudio.com).

The sections that follow list components by type along with some sources and order
codes to make it easier for you to purchase your components.

Components

The tables for each project list appendix codes for each component that is used. This
section lists all the parts and offers some sources as to where they can be purchased.

Resistors

Resistors are low-cost components—almost less than one cent each; often suppliers will
sell them in packs of 50 or 100. There are common resistors that get used a lot, such as

220R, 270R, 1-K, and 10-K values, so it can be useful to keep several of these values on
hand.

Code Description Source

M1 Photon board Particle

SeeedStudio: 114990286

SparkFun

M2 Ultrasonic sensor SeeedStudio: 101990004

M3 Particle relay shield Particle

M4 Photon Grove Kit SeeedStudio: 110060123

Table A.1 Photon Kits and Modules