Overview
At the heart of the enclosure is an additional PCB with an integrated voltage regulator (soldering required) and prototyping area.
This PCB comes with slots for the Arduino MKR or Portenta H7 board, an MKR Shield and an additional MKR Ethernet shield. It fits in a 6 module DIN rail enclosure.
Note: Assembly and soldering required, please refer to the assembly instructions.
Features:
- Milled 6 module DIN rail enclosure
- Transparent or grey lid in the top for displays
- PCB with slots to plug a Arduino MKR Zero / 1000 / 1200 / 1300 / 1400 / 1500 module or Portenta H7
- Slot for additional MKR Shields (e.g. MKR RS485, MKR CAN, MKR THERM...)
- Exclusive slot for the MKR ETH Ethernet shield
- Integrated voltage regulator (input voltage 9-35V via 2-way terminal block)
- Protoboard for own circuits
- All GPIO pins are marked and placed beside the breadboard area
- 2x 3 way terminal blocks to connect external components to the breadboard
*The boards and shields in the pictures are not included.
Get Inspired
As Jallson Suryo discusses in his project, adding voice controls to our appliances typically involves an internet connection and a smart assistant device such as Amazon Alexa or Google Assistant. This means extra latency, security concerns, and increased expenses due to the additional hardware and bandwidth requirements. This is why he created a prototype based on an Arduino Nicla Voice that can provide power for up to four outlets using just a voice command. Suryo gathered a dataset by repeating the words “one," “two," “three," “four," “on," and “off” into his phone and then uploaded the recordings to an Edge Impulse project. From here, he split the files into individual words before rebalancing his dataset to ensure each label was equally represented. The classifier model was trained for keyword spotting and used Syntiant NDP120-optimal settings for voice to yield an accuracy of around 80%. Apart from the Nicla Voice, Suryo incorporated a Pro Micro board to handle switching the bank of relays on or off. When the Nicla Voice detects the relay number, such as “one” or “three," it then waits until the follow-up “on” or “off” keyword is detected. With both the number and state now known, it sends an I2C transmission to the accompanying Pro Micro which decodes the command and switches the correct relay. To see more about this voice-controlled power strip, be sure to check out Suryo’s Edge Impulse tutorial.