Some years ago the story went around that the laser from the Neato XV-11 would become available as an open source LRF/LIDAR: http://www.hizook.com/blog/2009/12/20/ultra-low-cost-laser-rangefinders-actualized-neato-robotics . For some reason this didn't happen and subsequently many hacks have been pre…

Has anyone had any luck making this work? I tried using unix_guru's code but I am having trouble. I can't get the correct values. I am not sure if it's because I am using an Arduino Uno instead of the Arduino FIO. Does anyone know if that will make a difference? Thank you in advance

Some more progress on the manual for the OSLRF-01 can be found here: http://lightware.co.za/shop/en/index.php?controller=attachment&id_attachment=7 This update includes some instructions on how to assemble the OSLRF-01 KIT. Several people are contributing open source software including unix_guru …

Great work on the range finder! Is there a shorter focal length lens on the receiver which could be substituted to make the minimum distance less than .5M? I am looking for measuring ranges of 5cm to 500cm with <1 cm error rate. Thanks

Thanks MarkJ :slight_smile: I can't say for certain that the OSLRF-01 will meet your requirements but it's these kinds of unusual applications that make this open source product such an exciting platform to run experiments on. There's nothing that prevents different lens combinations from being use…

Hello, Using simple rising signals threshold method I get 10-50cm measurement errors (closer-larger). So I badly want to try this CFD algorithm and have few questions about using it: How do You choose to set a threshold for return signal ? If dark/light/close/far objects return amplitude varies …

Hi ig-x. I'm delighted to see your questions on this forum. You are asking about some of the critical issues that face LRF designers and you can probably imagine how much harder these issues would be to resolve if the signals were all running at the speed of light. There are many different strat…

Thank You Laser Developer ! maybe You can share some details/examples about Convert signal usage? How it can be used to help do ADC conversions? At the moment everything is a little bit fuzzy for me. If I get stable readings at some distances i.e. 3m and 4m, than instead of 1 meter I get 1,5 meter…

"Convert" is a clock that runs at a fixed frequency of 31.772kHz. It can be used as an interrupt to trigger successive ADC conversions, rather than letting the ADC convert the data at some random speed. The frequency of the Convert signal gives an ADC conversion rate that results in a perfect digita…

OK, finally I'm getting close to the usable data from this sensor. What about OSLRF-01 parameters consistency from one unit to other ? I wrote a program with empirical corrections to get correct data. Do I have to recalibrate everything on other OSLRF unit ? Or they all are equal ? I'm asking becau…

Well done! The basic errors are the same for any given design, so the slope and offset will be similar. However, delays inside the detector and amplifiers are subtly different from one unit to the next because the stray capacitance and silicon delays depend on how the PCB is assembled and how the s…

Open source, TOF laser rangefinder

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Open source, TOF laser rangefinder

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