Thanks ajb2k3,
I did manage to get my Stamp Pico working with both a PIR sensor and relay unit.
The problem was my fault. In soldering on the grove connector to the Stamp Pico, I soldered it on the wrong side of the board so when I connected a grove cable - ground was connected to GPIO 33, 5v was connected to GPIO 32, GPIO 32 was connected to 5v and GPIO 33 was connected to ground. Fortunately I didn't cook my board.

@teastain In Arduino you can uise the PCA9548 library .
Example : https://randomnerdtutorials.com/tca9548a-i2c-multiplexer-esp32-esp8266-arduino/

As spiff72 also pointed out, negative weights are displayed as positive. That's quite confusing for our students. For now, I've addressed this by using the raw ADC data as a zero point after an offset (tare). If the value during a measurement is greater than the zero point, then the value of 'scales.getWeight()' is positive. If the value is smaller, then I multiply 'scales.getWeight()' by -1.
I hope that issue is solved in the next library update.

@doko178 said in Cardputer pinout:

Guys,
How to get to stamp pinout? There's this topic https://www.reddit.com/r/M5Stack/comments/17lwkrd/i_was_disappointed_with_the_number_of_useful_pin/ but anyone tried some socket risers or other extnensions?

From the M5Stamp product page on the M5Stack website.

https://docs.m5stack.com/en/core/M5StampS3 PIN1.27

Thanks for working it out and sharing your results

Hello @frankqc

Scenario A : PoESP32 runs default AT command firmware and is used as unit connected to anther core.
Scenario B : PoESP32 runs alternate firmware, runs standalone and is not a unit.

Re 1. : for scenario B try something like a generic ESP32 board, e.g. ESP32 Dev Module

Re 2. : for scenario A like @robski mentioned the other core sends AT commands to the PoESP32 unit. See examples here - section Example/Arduino.

Re 3. : for scenario B the Groove port should be usable for I2C.

Re 4. : for scenario B see example here.

Thanks
Felix

You can find the firmware it came with and install it with the m5burner program. Download Page

Go to the UIFLOW FIRMWARE BURNING TOOL section and download the version for your computer.
When you open it, go to the stamps3 section and look for the User Demo firmware.
I recommend trying out the User Demo Plus firmware that someone uploaded.

Please specify the vibrations you want to measure. There is a big difference between a mosquito landing on a concrete block and a earthquake that cracks the block. Both has to do with vibrations...
The best will be to open the datasheets (both are linked) and compare. As far as I see the range and sensitivity are more or less similar for both sensors.

Thanks, that helps a lot. This is my first use of the Unit devices. I've use the HAT on the M5
which obviously is only 1 at a time.

I'll get the PbHUB and the I2C version of the Ultrasonic Distance Unit.

I'm working on many sensors to help disabled users. These sensors help those in
wheelchairs where they might not be able to even touch buttons. So providing a multitude
of options (motion, tilt, distance, LUX, buttons) - even the touch of the Core2 is very sensitive
which is good.

Thanks,

This change makes the socket 0 work.

Thank you

Hello @loscuras2

have you tried a different USB cable?

Thanks
Felix

Were you able to find a way to add the Kmeter to UIflow2? I am having the same issue with the core tough.
thx

There are 2 SPI buses that can be defined

To close this topic: I have no problem with a newly ordered sensor. I was apparently unlucky enough that my first sensor was faulty.