Charlie is a tool for quick and easy evaluation of our modules and resources, ideal for building a working proof of concept for your IoT device idea.
Charlie is compatible with the Arduino MKR form factor board, combining a low-power ARM® Cortex®-M0 32-bit SAMD21 microprocessor with our ME310 cellular module, which provides global cellular narrowband connectivity with a high-performance GNSS receiver.
The kit includes a Bosch Sensortec high-performance motion smart sensor chip and an embedded GNSS antenna, making Charlie a complete yet extremely compact IoT development platform.
Charlie can be used either alone or expanded with compatible shields. The Charlie kit provides the most commonly needed building blocks to develop, prototype and deploy IoT applications.
Designed for makers, programmers and developers.
Charlie Example Application: A Wearable Tracker
The example program leverages the hardware building blocks embedded in the Charlie board, namely:
The application is ideal as a demonstration of the board’s features and capabilities. Use it to start developing a wearable tracker with a step counter for older adults or an asset tracker with a user-activated alarm.
The application uses the following libraries:
The application performs the following tasks:
Once the peripherals are ready, the example application will cycle between the following two operations:
Before running the application, please ensure the following steps are completed:
SIM Card and Antenna Requirements
Destination Mobile Phone Number
What Differentiates Charlie from Our Traditional Evaluation Kit Offers?
Charlie is a low-cost evaluation kit designed for the rapid prototyping of IoT applications. It includes a standard Arduino-compatible microprocessor interfaced with our ME310G1 cellular module with a GNSS receiver, a GNSS antenna with a low-noise preamplifier and an ultralow current consumption digital motion sensor.
How Can I Develop My IoT Application Using Charlie?
You can program Charlie like any standard Arduino microprocessor board, with the advantage of onboard connectivity, GNSS receiver with antenna and a readily available motion sensor. Just add a few lines of code and the cellular antenna of your choice, and you are ready to go!
Additionally, Charlie mounts a separate standard USB connector to access the cellular module from an external CPU (i.e., for firmware updates, etc.).
What Hardware Components Do I Need before Building My IoT Application with Charlie?
Only and a 4G data-capable SIM card, preferably supporting LTE Cat M1 or NB-IoT services.
Does Charlie Include a Cellular Antenna?
Yes, a wide-band, high performance cellular antenna is included in the kit.
How Do I Power Up My Charlie Kit?
The board can be powered either by connecting the USB port to a powered USB port (hub or PC) or a battery pack (not included) through a dedicated battery connector or through VIN pin of the header connector. If the board intends to use the module with 2G connectivity, it is highly recommended to use an external 5 V dc power supply connected to VIN pin.
How Can I Recharge the Battery Pack Connected to Charlie?
The onboard power supply doubles as a battery charger. Simply connect the USB port to a PC, USB battery charger or powered USB hub to recharge your battery pack.
Is a Charlie Schematic Diagram Available?
Yes. It is available for download along with all other Charlie documentation.
Whom Can I Ask Any Technical Questions about Charlie?
Start evaluating and prototyping your next IoT connected device.