darkglove 3 Posted October 19, 2015 in 232 Communication I would like to attach a comms cable (232) to my UMO+ so that I can monitor it's status and maybe trigger commands. This (I believe) is essentially the same as the USB connection, but I am wondering if some of the spare pins on the motherboard can be used as a Tx and Rx... Has anyone done this or have any idea if it's possible? 1 Share this post Link to post Share on other sites
neotko 1,354 Posted October 19, 2015 in 232 Communication Please if you find out how to do that, share Share this post Link to post Share on other sites
darkglove 3 Posted October 19, 2015 in 232 Communication Certainly will. Serial 3 looks like my ticket, 2, 3 + 4 is all that's needed. Can you post the full image for me, can't seem to find it... Share this post Link to post Share on other sites
neotko 1,354 Posted October 19, 2015 in 232 Communication All the info it's on the board diagram https://github.com/Ultimaker/Ultimaker-Original-Plus Link to the board Share this post Link to post Share on other sites
darkglove 3 Posted October 20, 2015 in 232 Communication Perfect, thanks. Might not be able to have a bash at this for a couple of days but will update with anything I manage to do. 1 Share this post Link to post Share on other sites
darkglove 3 Posted October 20, 2015 in 232 Communication I had a little success with this today. I used the J22 connectors to connect a 232 cable to my processor (Crestron) I had to edit Configuration.h slightly #define SERIAL_PORT 2 \\was #define SERIAL_PORT 0 and #define BAUDRATE 115200 \\was #define BAUDRATE 250000 I only had to change the baud rate as my processor doesn't support 250000 When I power up the board I get a reasuring barrage of start up data... start echo:Marlin1.0.0 echo: Last Updated: Oct 20 2015 17:12:59 | Author: (David Braam) Compiled: Oct 20 2015 echo: Free Memory: 3840 PlannerBufferBytes: 1232 echo:Hardcoded Default Settings Loaded echo:Steps per unit: echo: M92 X78.74 Y78.74 Z200.00 E836.00 echo:Maximum feedrates (mm/s): echo: M203 X500.00 Y500.00 Z30.00 E25.00 echo:Maximum Acceleration (mm/s2): echo: M201 X9000 Y9000 Z100 E10000 echo:Acceleration: S=acceleration, T=retract acceleration echo: M204 S4000.00 T3000.00 echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s) echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00 echo:Home offset (mm): echo: M206 X0.00 Y0.00 Z0.00 echo:PID settings: echo: M301 P22.20 I1.08 D114.00 Using tool 0. echo:SD card ok This tells me that I am definitely connected, the tx and rx are the right way round and the baud rates match on both devices. Once this happens I then get echo:Unknown command: "" every few seconds. It seems like it is monitoring for commands and if it gets nothing then it gets upset. I'm not too bothered about that yet, what I really need to work out is why it doesn't respond when I do send commands. I'm also not sure yet what commands I can send to get information I need or to control the printer. (have tried some G and M codes but none of them seem to work) I think I may have to enable serial 2 to accept and handle control commands somehow... But serial communication is a good start. 1 Share this post Link to post Share on other sites