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Raspberry Pi IoT shield offers 1-wire, Grove, PMOD, and more

Apr 1, 2016 — by Eric Brown 2,213 views

Pi 2 Design’s 502IoT Shield for the RPi Pi B+ 2 and 3 offers sensor expansion via 1-Wire, Grove, and PMOD I/O connectors, plus WiFi, Ethernet, M.2, USB, and more.

Pi 2 Design, a Rhode Island based Raspberry Pi accessory spinoff of Cogent Computers, recently shipped a Kickstarter funded, Cogent-manufactured CSB502SSD multifunction SSD shield for the Linux-oriented Pi SBC. Now it’s counterpunching with an Internet of Things shield that it has manufactured on its own.

The 502IoT Shield is also referred to as the Pi2Embedded 502IoT Shield. Pi2Embedded is the embedded division of Pi 2 Design. In addition to launching the 502IoT Shield, the company is relaunching the “Zero Shield” from its failed Indiegogo campaign as a 504SSD shield. The 504SSD offers up to 256GB storage, WiFi, USB ports, and more for the Raspberry Pi Zero (see farther below).

502IoT Shield, front and back
(click images to enlarge)

The 502IoT Shield supports the B+ version of the Raspberry Pi 2 and 64-bit, WiFi-enabled Raspberry Pi 3. It also supports any device with a Pi-compatible, 40-pin connector, including Hardkernel’s Odroid C1+ and Odroid-C2.


The $79 and up 502IoT Shield supports sensor-driven IoT gateway applications including home and building automation, HVAC, and security. Other applications are said to include transportation, agricultural automation, factory automation, and process control.

502IoT Shield detail view, with Raspberry Pi board functions shown in green
(click image to enlarge)

The 502IoT Shield adds to the Pi with I/O including SPI, I2C, analog, and digital/PWM via a buffered 1-Wire bus, as well as Grove and PMOD I/O expansion connectors. The shield also provides a second 10/100 Ethernet port, two more USB ports, and an M.2 SSD storage socket.

The built-in WiFi module will be welcome to owners of the wireless-bereft Pi 2 and Odroid boards. Other features include audio out, an RTC, and a 1-Wire based onboard temperature sensor.

502IoT Shield (left) and block diagram
(click images to enlarge)

Specifications listed for the 502IoT Shield include:

(advertise here)

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