@felmue Thank you very much!

@felmue said in ACSSR I2c control:

Hello @ajb2k3

first of all make sure when the ACSSR powers on the internal RGB LED blinks red (=I2C mode). If not, follow the instructions here to change mode. (Section Usage/Communication protocol)

Then use something like below to first scan the I2C bus, set the proper slave address, read the version and then toggle the ACSSR every second.
Note: I used an M5Atom for this example.

0_1658576211471_M5AtomUnitACSSRTest_20220723.png

or from the Micropython tab:

from m5stack import * from m5ui import * from uiflow import * import i2c_bus import time myToggle = None i2c0 = i2c_bus.easyI2C(i2c_bus.PORTA, 0x00, freq=400000) print(i2c0.scan()) wait(1) i2c0.addr=(0x50) print(i2c0.read_u8(0xFE)) myToggle = False while True: if myToggle == False: myToggle = True i2c0.write_u8(0x00, 0x01) else: myToggle = False i2c0.write_u8(0x00, 0x00) wait(1) wait_ms(2)

Thanks
Felix

Thanks mate, I didn't know you had to set the slave address, that explains why noting is working.

Hello @learly6

maybe the issue is the I2C clock speed. Looking at each example it seems that the MLX 90640 is setup with 450 kHz (interestingly the comment says 400 kHz) whereas the Ultrasonic Range Sensor is setup with 200 kHz.

The MLX datasheet indicates I2C clock speeds of 400 kHz and up. I cannot find a datasheet for the Ultrasonic Range Sensor.

I'd double check the I2C frequency and whether both sensors can deal with either 200 kHz or 400 kHz.

Another thing to keep in mind are the pull-up resistors. Most (if not all) I2C sensors have built-in pull-up resistors. With each additional sensor the resulting resistance gets smaller as they are all in parallel.

Thanks
Felix

@felmue Thanks for responding Felix!
I am looking to hack the library, or my bad habit of dismantling one and putting the needed components "in-line" with the other code of the Main Loop in the Arduino IDE, but I admit that I am "Underwhelmed" by M5Stack's firmware and GitHub examples!!!
I would LOVE to access the STM controller directly and make the ext IO2 be a sta
nd alone processor, but whoa!
I'll keep in touch...Terry

I fixed the problem with the cam2core on the core2. So the UnitCam will work with Arduino IDE code and the core2.

It is a very simple fix:
Replace the first line #include <M5Stack.h>
with #include <M5Core2.h>

Initialising the core code on a Core2 is not the best idea!
Now it works on my Core2 showing the video stream from a UnitCam connected to PortB (pins 26, 36).

The Neohex has 37 RGB LEDS and the headband has 118 RGB LEDs.
the range should be set to 155 as there are now 155 LEDs connected together.
They should also be connected as below
0_1655653766803_hex_cat.png

However, this many LED's will cause power issues and you will need to build a power booster cable as shown in this guide.

https://youtu.be/7MP_eG3U2So

@wsanders
i think so, but i have trouble lighting LEDs with m5stick

Hi ajb2k3,

thanks a lot. This is a quit full of money for this type of display. Seemes to be manufactured only for M5Stack. Due to the fact, that shipping costs and VAT to Germany will be applied, to by a new one for around 45 bucks (€) would be my way to go. The unit is working. I just use then the M5-unit without display (like an ESP32) and put this in setup():

#include <M5Stack.h> // put this at the beginning M5.begin(); // Initialize the M5Stack object M5.Lcd.writecommand(ILI9341_DISPOFF); M5.Lcd.setBrightness(0);

Thanks, Axel

Hello @water5

today I got my gesture unit and I can confirm that it works fine with M5Core2 but fails to work with M5AtomLite using UiFlow firmware 1.9.8.

What I found however is, that the gesture unit starts to work with M5AtomLite as soon as I add another I2C unit. I also double-checked with an I2C scan: only gesture unit connected to M5AtomLite and the scan finds nothing. Gesture unit and PbHub connected to M5Atom and the scan finds both. Go figure...

Thanks
Felix

Hello @Treadbrook

in my experience the link light only indicates that there is an electrical connection between two Ethernet devices. The link light, however, does not give an indication about whether a device has either a static IP address or received an IP address from a DHCP server. In other words when I connect my POESP32 to a switch where the switch has no further connections (and therefore there is no DHCP server) the link light lights up, but check Ethernet connection returns false. This leads me to think that check Ethernet connection also checks for an IP address and not only for a link.

I suggest you try to connect your POESP32, as a test, to your router directly and / or check on your router whether the POESP32 is listed in its DHCP lease list and has received an IP address.

Note: if you are in a corporate network environment it is possible that the network administrator has setup port security which means an Ethernet device can only participate in that network after it has been whitelisted by said network administrator.

Regarding documentation - I assume you've seen this page?

Thanks
Felix

Hi @fredz, I'm trying to do localization by connecting UWB with M5stack core2, I'm trying to do one base one tag, but unfortunately; I have no measurement appears in my screen, I'm still struggling to solve this issue, but hope if possible get some advice from you

Hello @emsea22

sorry, I don't have a tutorial. But no, you don't need to attach an FTDI dongle to the iEXT.IO2 unit - the I2C address can be changed via an I2C command sent from the host, e.g. 0xFF, <new I2C address>. (At least that is my understanding from reading the documentation.)

Thanks
Felix

@m5stack
Could you please correct the UnitCamForUIFlow firmware as follows?
Set the WROOM-32 clock to XCLK=8MHz and the ov2640 clock to twice the current clock.

This solution has been found by Sohtamei in the following thread;
https://community.m5stack.com/topic/3649/unitcam-hw-issue-cannot-stream-video/8

Thanks a lot.

Hello @robjasey

I am glad to hear you got it working to your liking. The forum allows to upload pictures (cloud symbol with arrow) or you could post the resulting python code.

Thanks
Felix

Makes not difference if indoors or outdoors. Since it is connected to portA and not to portC as it is supposed to, do I need to make any modifications? Eg like here: https://community.m5stack.com/topic/1312/gps-unit-with-m5stack-fire-not-working/5

Thx

@bartblommaerts said in multiple 4-Relays on same I2C bus:

Oh the PaHub>2< Unit :/

its not available yet in the local stores. And the Pa.Hub (version 1) is sold out.

You're better off ordering direct from M5Stack

Hello @ve2dx

try something like this:

M5.Axp.SetLDOVoltage(3, 2500);

the second parameter is the brightness. Max is 3300.

Thanks
Felix