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    • P

      New v3.1 Expansion Board Firmware: v0.0.11

      Watching Ignoring Scheduled Pinned Locked Moved Announcements & News expansionboard update firmware
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      G
      v0.0.11 will lock your Expansion Board in DFU mode. Goodbye serial console. https://forum.pycom.io/topic/4684/exit-from-dfu-mode/13
    • W

      Best power source for using 5V sensors

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board battery levelshifter i2c expansion board expansionboard
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      M
      @weingami Note that I2C level shifting is particularly easy as it uses an open drain-pullup signaling scheme. Shifting can simply be done with two FETs: https://electronics.stackexchange.com/questions/255607/i2c-level-shifting-mosfet
    • G

      pycoproc.py and Expansion board 3

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board expansionboard pycoproc.py deepsleep lopy4
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      F
      @Giorgio Did you find out how? I have the same problem here, using a gPy+Expansion Board V3.1. I can't find a way to put the board in deepsleep mode. It is currently using 14mA. I can only find documentation for Pysense/Pytrack/DSboard, etc.. but nothing for the Expansion Board!? :\ Where's the info I am missing? Fakstory
    • C

      Well that sucks....

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board expansionboard usb
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      C
      @robert-hh Eh yeah, I'll give that a shot.
    • robert-hhR

      Pinout documentation for development modules

      Watching Ignoring Scheduled Pinned Locked Moved Discussion expansionboard devmodules fipy rts cts
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      R
      @Paul-Thornton What is the answer to his question though? I too am very confused by the documentation for the Fipy and expansion boards. There is conflicting or outdated information regarding the expansion board v2.0 and v3.0. Often I don't know which is being referred to, and worse, Pycom's channel resellers like Mouser, Digikey, etc. often mix them up.
    • S

      i2c device Wiring on Expansion Board & WiPy 3.0

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board wipy3.0 expansionboard i2c
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      S
      @eric-waai Yes it was a typo I have 3 i2c devices
    • V

      Cannot switch LoPy4 to download mode with Expansion Board 3.0 on Windows10

      Watching Ignoring Scheduled Pinned Locked Moved Discussion expansionboard lopy4 esptool
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      robert-hhR
      @verkehrsrot Sorry, I do not know a documentation of the Pycom method. I also do not expect that the Pycom method will be implemented by esptool.py, since almost every other ESP32 board maker implements the DTR/RTS method.
    • N

      FTP access, device is seen but doesn't asnwer.

      Watching Ignoring Scheduled Pinned Locked Moved FiPy fipy ftp filezilla usb expansionboard
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      I
      @NickBoots , If you are connecting to an Access point from your pycom device (i.e Wifi in STA mode) disable the wifi on boot option via this command pycom.wifi_on_boot(False) reset board and try again.
    • V

      Schematic?

      Watching Ignoring Scheduled Pinned Locked Moved Ideas expansionboard
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      L
      @robert-hh yes, new chips are really interesting. Reading draft version of docs are promising. As they send some testing parts already i suppose full delivery and final version of docs will be really soon. I am really interested if ADC will be better in new chips ;-)
    • M

      Expansion board 3.0 battery power not enough juice?

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board expansionboard
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      R
      @wolli01 Yes, I can remove the cable when the Lopy is charge by Lipo after starting. When USB connected, I remove the cable but it's not necessary. I updated Lopy with the new firmware and no change. It's work only with the jumper cable connected when the expension board and lopy start. Maybe on other people have an idea ?
    • W

      How to connect external power through the BQ24040 battery charger IC on the Expansion Board 2.1

      Watching Ignoring Scheduled Pinned Locked Moved Comments & Feedback solar bq24040 battery expansionboard
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    • R

      Lopy with a hc-sr04 endless loop

      Watching Ignoring Scheduled Pinned Locked Moved LoPy lopy expansionboard hc-sr04
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      J
      @rootmi I’m no electronics expert and I don’t know the full specs of the sensor, but I’m not sure I understand how those two resistors would be enough. You are still powering a 5V device with 3.3V and sending it a 3.3V signal, aren’t you?
    • B

      Expansion Board Suggestions

      Watching Ignoring Scheduled Pinned Locked Moved Expansion Board expansionboard pytrack suggestions features battery monitor
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      Charly86C
      @brotherdust any chance you share the pin pad mapping on the bottom (at least RX/TX) ?
    • DDecoeneD

      Can you use Pin.callback(...) to invoke deepsleep.go_to_sleep(...)?

      Watching Ignoring Scheduled Pinned Locked Moved SiPy sipy expansionboard deepsleep callback
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      DDecoeneD
      Hello, Thank you for pointing that out. I changed the pins to G30 (sleep) and G13 (wakeup) and now the system works fine. So, the new code is: from machine import Pin, Timer from deepsleep import DeepSleep import deepsleep def handler(button): ds.enable_pullups('G31') # can also do ds.enable_pullups(['P17', 'P18']) ds.enable_wake_on_fall('G31') # can also do ds.enable_wake_on_fall(['P17', 'P18']) print("Button pushed") ds.go_to_sleep(20) ds = DeepSleep() # get the wake reason and the value of the pins during wake up wake_s = ds.get_wake_status() print(wake_s) if wake_s['wake'] == deepsleep.PIN_WAKE: print("Pin wake up") elif wake_s['wake'] == deepsleep.TIMER_WAKE: print("Timer wake up") else: # deepsleep.POWER_ON_WAKE: print("Power ON reset") button=Pin("G30",Pin.IN, pull=Pin.PULL_UP) irq=button.callback(trigger=button.IRQ_FALLING, handler=handler) print('booted---')
    • L

      LoPy+Expansion board+Deep Sleep Shield only down to 18mA

      Watching Ignoring Scheduled Pinned Locked Moved LoPy lopy current deep sleep lopy expansionboard
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      R
      @ledbelly2142 Hi ledbelly2142 I am doing a project with the same devices as you. I am a begineer of IoT and it seems I can learn something from your experience. May you share the whole code you have done of this deep sleep shield connected with LoRa, if you still have it. Thanks in advance! Regards Rachel
    • T

      Using Wipy 2.0 Without expansion Board

      Watching Ignoring Scheduled Pinned Locked Moved WiPy 2&3 wipy2.0 expansionboard
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      B
      @Xykon @Tomjuarez Please remember to check the voltage of the FTDI cable. It states that it is 3v3 but the VCC pin is actually at 5 V, confusingly! I have made this mistake and it may destroy your device! Thanks! Alex
    • A

      A million issues getting started

      Watching Ignoring Scheduled Pinned Locked Moved WiPy 2&3 wipy2.0 expansionboard
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      L
      @AustinBeau yes i wrote this line from memory - fixed in post, thanks :) IP is 192.168.4.1 and rest default www.pycom.io and then micro python like here https://docs.pycom.io/pycom_esp32/pycom_esp32/getstarted.html#initial-configuration-atom
    • H

      Cannot connect to WiPy 2.0 via USB

      Watching Ignoring Scheduled Pinned Locked Moved WiPy 2&3 usb wipy2.0 expansionboard
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      H
      Solved! These are the right drivers to install! http://www.ftdichip.com/Drivers/D2XX.htm
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