ULM1 High-Precision UWB Positioning Module

UWB module for USB and UART integration

ULM1 is a DWM1000-based module that can act as an anchor or tag in a compatible HR-RTLS1 setup. The onboard display assists configuration checks, while USB-to-serial and TTL UART allow a host application or embedded controller to receive data. Verify pin assignments and electrical compatibility before connecting the TTL interface.

The user manual specifies 115200 baud, 8 data bits, no parity and 1 stop bit for its serial data output. Use the documented mc frame format and units for your firmware. Start by validating a complete received frame and device identities before building application logic around the measurements.

Match radio settings to the update requirement

The ULM1 manual distinguishes a 10 ms single-tag cycle at 6.8 Mbps from a 28 ms slot per configured tag at 110 kbps. Its four-slot 110 kbps example therefore has a 112 ms cycle. The number of configured slots matters even when some tags are absent. These cycle values are not an end-to-end latency guarantee.

For multi-anchor positioning, configure unique roles and IDs, install anchors in a suitable geometry and enter their coordinates consistently. The manual's maximum range is a line-of-sight specification, and a measured range is not the same as a position fix.

Read the manual below and the TWR, TDoA and PDoA comparison. Compare ULM3 when evaluating a DWM3000-based platform; select compatible tags and firmware as a system.