The launch of the Walter modem by DPTechnics in Belgium marks a significant advancement for Internet of Things (IoT) projects requiring cellular connectivity. With the decline of universally available 2G networks, the need for affordable and efficient connectivity options has become increasingly relevant. The Walter module, showcased in a video titled “You’ve Never Seen Cellular Like This” by Data Slayer, offers a compelling solution for developers seeking reliable cellular connections.
This open-source module integrates an ESP32-S3 chip for WiFi and Bluetooth Low Energy (BLE) along with a Sequans Monarch chip for GSM and Global Navigation Satellite System (GNSS) connectivity. While the Walter does not support the high speeds of 5G, it operates on LTE-M and NB-IoT, making it ideal for low-power applications where speed in kilobits per second is sufficient.
Reviving Project Opportunities
For developers familiar with the now-obsolete GPy module from PyCom, Walter serves as a direct replacement. This is particularly beneficial for those who have faced challenges due to the GPy’s end-of-life status. Although LTE-M does not support Voice over LTE (VoLTE), the Walter modem can be a useful tool for IoT applications, especially in areas with strong cellular coverage.
The energy efficiency of the Walter is particularly noteworthy. It consumes just 9.8 μA during deep sleep mode, making it suitable for battery-powered devices. Additionally, the module has already received certifications from CE, FCC, IC, RCM, and UKCA. These certifications streamline the transition from prototype to product, reducing bureaucratic hurdles for developers.
Potential Applications and Future Impact
The Walter modem’s potential as a GPS tracker has garnered attention, with Data Slayer highlighting its capabilities. As more projects seek reliable cellular connectivity, the introduction of this modem could invigorate the market for IoT solutions.
Developers looking for alternatives to LoRa technology may find the Walter to be a valuable asset, especially in urban environments or locations near cellular towers. The combination of its low energy consumption and robust connectivity options positions it as a noteworthy contender in the evolving landscape of IoT technology.
In conclusion, the arrival of the Walter modem by DPTechnics signals a renewed interest in cellular connectivity for IoT projects. With its open-source design, low power usage, and essential certifications, it stands to benefit many developers aiming to innovate in this space.