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btw @me-no-dev i think that using ESPs for feeding 3D printers is quite a killer app
Me No Dev
@me-no-dev
yeah, I'm looking for a good cheap kit to buy. Wanna see how much could I atually do with ESP32
probonopd
@probonopd
ESP32 is not interesting for me, at that price point i'll go with a tiny linux system
Me No Dev
@me-no-dev
maybe attach the ATMEGA differently and only move axes and control outputs through it
yeah... I want to do the actuall printing on the ESP32 if that makes sense
not use it as SD->UART
probonopd
@probonopd
my approach is to connect to any existing 3d printer. with ESP32 you could make the printer with it
i see
Me No Dev
@me-no-dev
your idea is great
coupled with websocket and nice js gui, you could do anything
you do need async for that
and I can probably help with some async-like serial
so while the serial is transitting and waiting for response, the network is running
probonopd
@probonopd
do you know a bit about how 3d printing works?
Me No Dev
@me-no-dev
I own a 3D printer
though mine is 32bit
probonopd
@probonopd
wow @me-no-dev that is exactly what we need then :-)
know Cura?
Me No Dev
@me-no-dev
I do byt use S3D
probonopd
@probonopd
they have this wireless printing for the Ultimaker 3
press print, done
i have this running with arbitrary printers + an esp
Me No Dev
@me-no-dev
I have FF Dreamer which is WiFi and USB (not serial) and yes I've done quite a bit of playing with it
probonopd
@probonopd
will look into slicr next
s3d, is it worth it?
Me No Dev
@me-no-dev
oh yes
evry penny
probonopd
@probonopd
can it do wifi printing directly?
Me No Dev
@me-no-dev
not sure
I have nothing but issues with my WiFi module
so I have been using usb
and this WiFi is SPI, so not that easy to hack
Mehrdad K
@mkeyno
hi guys , somethings strange , I easily can upload sketch data files , but can't upload the sketch , has somebody experienced such phenomena ? does my module broke ?
Me No Dev
@me-no-dev
your sketch too big?
Akash Ashok
@thehellmaker
Hi Guys,,,
I have been facing some problem with the esp8266 chip
with random restarts
after a while
it says ,"resetReason":"External System","resetInfo":"Fatal exception:0 flag:6 (EXT_SYS_RST) epc1:0x00000000 epc2:0x00000000 epc3:0x00000000 excvaddr:0x00000000 depc:0x00000000"
not quite able to figure out where the issue is
i am not providing any external reset
and my reset pin is set to high
do u guys know of any other reason why this could happen ?
Akash Ashok
@thehellmaker
another reason i am seeing is "resetReason":"Hardware Watchdog","resetInfo":"Fatal exception:4 flag:1 (WDT) epc1:0x401031e8 epc2:0x00000000 epc3:0x00000000 excvaddr:0x00000000 depc:0x00000000"
Mehrdad K
@mkeyno
no , it is just empty sketch with only serial print
sticilface
@sticilface

Is anyone aware of a way to switch the channel of the ESP8266 AP without causing clients to become disconnected?
even using the raw sdk API I still get a disconnect. I'm asking as i'm trying to design a smooth experience of connecting to the AP, setting WiFi credentials, and then connecting to the wifi network. At the moment if the AP is on a different channel to the prospective network it must change first, only the client then drops the connection and reconnects to the main network. this requires you to reconnect manually back to the ESP to continue the setup. its just a bit clunky... not particularly professional.
I use this code

                            bool result = false; 
                            struct softap_config * _currentconfig = new softap_config; 
                            if (_currentconfig && wifi_softap_get_config(_currentconfig)) {
                                _currentconfig->channel = channel; 
                                result = wifi_softap_set_config_current(_currentconfig); 
                            }

maybe @igrr can enquire internally. an SDK function to switch wifi channel would be good.

Me No Dev
@me-no-dev
? @sticilface how do you exactly imagine that to happen?
you are changing the frequency, so unless the clients know that it will be switched (and they don't) they will get dosconnected
sticilface
@sticilface
This is a very good point. just from experience when my home router changes channel it seems to be a lot smoother. I was thinking there might be something in the wifi protocol that can advertise a channel change before it happens....