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    skuhu

    @skuhu

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    Posts made by skuhu

    • LoRa pager on M5StickC + CardKB

      Hi everyone,

      i'm planning to build a small pager device, base on the M5StickC.
      I would like to have a keyboard so i thinked of the CardKB.

      Last but not least i want to use a LoRa Ai Thinker RA-02 Module juste as in the M5Stack LoRa Module.
      The original module uses GPIO : 5/26/36 as CS/RST/IRQ.

      Thats good as the M5StickC has GPIO 0/26/36 in front.
      And i suppose that re-mapping GPIO 5 on GPIO 0 should be feasible.

      Problem is that the RA-02 also needs MOSI/MISO/SCK that are wired to GPIO 23/19/18
      and the M5Stick doesnt have more exposed GPIO.

      GPIO 18/23 are used by the LCD.

      As i'm new to electronics, i understand that MISO/MOSI are terms related to the SPI interface.

      Is there a way to connect the needed GPIO ?

      Via the Grove connector ?
      As i understand the grove connector provides an I2C interface.

      It seems possible to use SPI over I2C with this type of modules :
      https://fr.aliexpress.com/item/32858332883.html?spm=a2g0o.productlist.0.0.2c9d2615RyHRrO&algo_pvid=08866c52-58d9-4ab4-af44-1d4dd6947ce1&algo_expid=08866c52-58d9-4ab4-af44-1d4dd6947ce1-3&btsid=082e32bc-8da8-4dec-bc60-5fa244c0ce4b&ws_ab_test=searchweb0_0,searchweb201602_6,searchweb201603_52
      https://fr.aliexpress.com/item/976713163.html?spm=a2g0o.productlist.0.0.2c9d2615RyHRrO&algo_pvid=08866c52-58d9-4ab4-af44-1d4dd6947ce1&algo_expid=08866c52-58d9-4ab4-af44-1d4dd6947ce1-4&btsid=082e32bc-8da8-4dec-bc60-5fa244c0ce4b&ws_ab_test=searchweb0_0,searchweb201602_6,searchweb201603_52

      Or using these (but a bit expensive, rather have a M5Stack instead of the stick) :
      https://www.gotronic.fr/art-module-grove-lora-113060007-25947.htm

      Thanks,
      Philippe

      posted in PROJECTS
      S
      skuhu