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iliasam / Laser_tape_reverse_engineering

Alternative firmware for a cheap X-40 laser tape measure
https://habrahabr.ru/post/327642
MIT License
121 stars 46 forks source link

Looking for Laser ranger's alternative wiring/circuit layout. #3

Closed pcbtborges closed 4 years ago

pcbtborges commented 4 years ago

Hi, I have acquired the module on the link below. Can it be used? Have you got the wiring diagram for this model? Thanks in advance Paulo

https://pt.aliexpress.com/item/4000410794896.html?spm=a2g0o.detail.1000014.1.120b73f7wVKQES&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.13338.170520.0&scm_id=1007.13338.170520.0&scm-url=1007.13338.170520.0&pvid=afaae825-5213-47db-b141-89255d4e7e8f&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.13338.170520.0,pvid:afaae825-5213-47db-b141-89255d4e7e8f,tpp_buckets:668%230%23169576%232_668%23808%235965%23504_668%23888%233325%2317_668%232846%238107%2351_668%232717%237558%23137

iliasam commented 4 years ago

Hello. If it is really 703A module, it could be used. I had added pinout: https://github.com/iliasam/Laser_tape_reverse_engineering/blob/master/PCB_photos/module_703A_pinout.png

pcbtborges commented 4 years ago

Hi, thanks. How about the rest of the parameters, serial speed and board pin-out, is everything the same? Also, can you please confirm VCC for that board? Online information is so erratic. I acquired the module as is and not as a ready to use Range Finder, will there be a need to change firmware? Thanks in advance Paulo

iliasam commented 4 years ago

Yes, all other parameters should be same. 703A module is designed for battery powering, so it need 3V for working. But 3.3V is suitable too.

The module by your link is declared to have a special firmware from the factory, that is supports communication with PC.