Tommy Yu

Open drivers and a verified UART protocol reference for ERDI 905 nm laser rangefinder modules. Notes on what datasheets leave out.

Joined on Oct 8, 2026

Tommy Yu

Oct 26

Three 1535 nm rangefinders, three ranges: the sentence that makes them comparable

#lidar #hardware #datasheet #optics

2 min read

Tommy Yu

Oct 26

A rangefinder dataset you can diff: 59 models, with the test condition attached

#lidar #hardware #datasheet #opensource

2 min read

Tommy Yu

Oct 26

What a first article inspection for a rangefinder actually contains

#hardware #manufacturing #embedded #codequality

3 min read

Tommy Yu

Oct 25

Why "eye safe" is a wavelength argument, not a marketing claim

#hardware #embedded #robotics #safety

3 min read

Tommy Yu

Oct 25

Five things in a rangefinder protocol document that cost two weeks each

#embedded #arduino #hardware #c

3 min read

Tommy Yu

Oct 25

Your lidar says 40 m and reaches 9 m: the four numbers that decide a real range

#hardware #embedded #iot #arduino

3 min read

Tommy Yu

Oct 22

What a laser rangefinder module actually costs: 59 published prices

#hardware #embedded #robotics #opensource

5 min read

Tommy Yu

Oct 8

What a 905 nm rangefinder datasheet does not tell you

#hardware #iot #arduino #embedded

7 min read

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Tommy Yu

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Writing Debut

Three 1535 nm rangefinders, three ranges: the sentence that makes them comparable

A rangefinder dataset you can diff: 59 models, with the test condition attached

What a first article inspection for a rangefinder actually contains

Why "eye safe" is a wavelength argument, not a marketing claim

Five things in a rangefinder protocol document that cost two weeks each

Your lidar says 40 m and reaches 9 m: the four numbers that decide a real range

What a laser rangefinder module actually costs: 59 published prices

What a 905 nm rangefinder datasheet does not tell you