There are many boards for IoT projects, and no single choice fits every job. This article compares the boards on the TMRX product pages in broad terms to help match one to the work you have in mind.
Summary in 3 lines
For small jobs where size and simplicity matter, consider the ESP32, Pico W or XIAO ESP32C3. For Wi-Fi 6 with Zigbee/Thread, consider the XIAO ESP32C6; for camera and audio work, consider the XIAO ESP32S3 Sense. For heavy processing or a gateway role, consider the Raspberry Pi 5.
Small boards for general sensor work
All details come from the specifications on the TMRX product pages (as of 29 October 2026). ESP32 Dev Board (TMRX-Ready) uses the ESP32-WROOM-32 module with Wi-Fi and Bluetooth, 4MB flash and a built-in USB-to-serial interface. It suits getting started and general jobs that need Wi-Fi. Raspberry Pi Pico W uses the RP2040 dual-core Cortex-M0+ at 133 MHz, with 2.4GHz Wi-Fi, BLE 5.2, 264KB SRAM and 2MB flash. It measures 21×51 mm, accepts 1.8–5.5V and runs MicroPython. XIAO ESP32C3 uses an ESP32-C3 RISC-V at 160 MHz, with 2.4GHz Wi-Fi, BLE 5.0, 4MB flash and 400KB SRAM. At only 21×17.5 mm with USB-C, it fits where space inside a device is tight. In general, these microcontroller boards suit measure-and-report jobs that do not need a full operating system.
When you need Wi-Fi 6 or Zigbee/Thread
XIAO ESP32C6 uses an ESP32-C6 RISC-V and supports Wi-Fi 6 (802.11ax) on 2.4GHz, BLE 5.0 and 802.15.4 (Zigbee). It is listed as Matter/Thread-ready and has USB-C. It suits work that has to talk to smart-home devices or networks built on Zigbee or Thread.
When you need camera and audio
XIAO ESP32S3 Sense uses an ESP32-S3R8 dual-core at 240 MHz, with 2.4GHz Wi-Fi, BLE 5.0, 8MB flash and 8MB PSRAM. It adds an OV2640 camera (1600×1200), a PDM digital microphone and a microSD slot, which makes it a fit for capturing images or sound and storing data on a card.
When you need heavy processing or a gateway
Raspberry Pi 5 (4GB) uses the BCM2712 quad-core Cortex-A76 at 2.4 GHz with 4GB LPDDR4X RAM. It has Wi-Fi 5, BT 5.0/BLE, Gigabit Ethernet, two USB 3.0 and two USB 2.0 ports, two micro HDMI ports, PCIe 2.0 x1 and a microSD slot, in an 85×56 mm board. It suits heavier software, or acting as a hub that collects data from other devices. The trade-off is that it is larger than the microcontroller boards above and better suited to fixed installations.
How this relates to TMRX
All the boards above are described on the TMRX product pages and are available by pre-order, with an estimated wait of about 7–14 days. TMRX also lists XIAO relay modules, in 1-channel and 6-channel Wi-Fi versions, for jobs that need to switch equipment on and off. If you are unsure which board to start with, you can contact the TMRX team to talk through your project before ordering.
Sources
TMRX product pages — https://techmorrow.co/products — 29 October 2026
