Hi, I recently set up various probing systems(Renishaw, Heidenhain, Mahrpos) with linuxcnc, and of course I could not resist reverse engineering the protocol. All systems I observed had the following in common: - sometimes the optical box is only the analog fronted, and the conversion happens in another box. sometimes it is all in one. - The IR does not have modulation, so you cannot use tsop type receiver. - the signal is fast, you need a photodiode and TIA with a bandwidth of at least 300khz - the receiver is usually extremely overengineered, i.e Heidenhain uses a spartan FPGA in the unit….
The most difficult part is figuring out how to turn the probe on. Then you have to build a TIA which reliably decodes the signal. Figuring out which bits are for probe and battery is relatively easy. I can provide dumps of OMM, OMI, Mahrpos and Heidenhain turn-on codes if anyone is interested. Rene > On 12 Aug 2016, at 15:22, Florian Rist <fr...@fs.tum.de> wrote: > > Hi Sarah > >> i had the same problem with a Renishaw ir probe , so i reverse >> engineered the ir protocol > > Oh, and did you publish your findings somewhere, or could you post them > here? > > I'd be really interested, because I have a Renishaw probe but I don't > have the receiver (OMI). Well actually I have two Renishaw probes, but > only one receiver and reverse engineering the protocol is on my list of > things to do, but it will take long before I can find the time, to work > on it. > > Did you work on the old (OMI receiver) or the new (OMI-2 receiver) > protocol? > > See you > Flo > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. http://sdm.link/zohodev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
