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    Bram

    @Bram

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    Website turboledz.com Location Vancouver, BC

    Bram Follow

    Posts made by Bram

    • RE: Call for articles with your product on M5Stack!!

      @salty_good

      My name is Abraham Stolk, I am an indie game-developer from Vancouver, Canada, who turned electronics-maker.

      My latest product is the Desk-side Stock Ticker.

      It is a tiled-panel of 4 OLED displays that are used to scroll stock quotes on.

      alt text

      By default, it will scroll the stock quotes from the DOW-30 Index. But you can configure the symbols to use, over wifi.

      The stock quotes are downloaded from the Internet, with a 3 minute refresh.

      To connect it to your WiFi network, you use the WPS button of your home router. It was really easy to get going, thanks to the WPS example in the Arduino IDE.

      I programmed it in C, using Arduino IDE.

      It runs on either Stamp-C3 or Stamp-C3U.

      I love the white-look of the Stamp-C3U: it is the best looking μcontroller in existence, I think. Although the black Stamp-C3 is a little easier to program, as you do not have to force it in bootloader mode the first time you use it.

      Overall, I am a big fan of your μcontroller boards.

      alt text

      The production process was prototyping on a breadboard to validate the design. Once it worked, I designed a PCB in EasyEDA, and had JLCPCB manufacture the PCBs. Assembly was done in my home-lab.

      I am particularly proud of how I managed to take cheap 1.3" OLEDs and tile them into a 140mm aggregate screen. Thanks to the fast SPI interfacing, I get high FPS out of it.

      posted in PROJECTS
      Bram
    • RE: Stamp C3 reset pin.

      It appears that ENABLE is indeed the RESET pin. I use it to connect SPI OLED RESET signals, and that works.

      posted in Modules
      Bram
    • Stamp C3 reset pin.

      Does Stamp C3 have a RESET pin? (I know it has a reset button, but it the RESET signal broken out on the header?)

      The espressif ESP32-C3-DevKitM-1 has RESET on pin 7.

      I did see a pin ENABLE on the StampC3... is that the same as RESET? Or its inverse?

      Thanks.

      posted in Modules
      Bram
    • RE: Preprocessor defines for STAMP-C

      I have been using ARDUINO_ESP32C3_DEV to differentiate between Espressif dev board and StampC3, in combination with ESP_PLATFORM.

      posted in Arduino
      Bram
    • I used Stamp-C3 to make a CO₂ Monitor with zoom-able graph.

      I used a Stamp-C3 RISCV controller to make a CO₂ monitor.

      It has a knob to zoom in/out on the time series data.

      alt text

      It has a very satisfying control mechanism.

      posted in PROJECTS
      Bram
    • RE: Preprocessor defines for STAMP-C

      @ajb2k3 said in Preprocessor defines for STAMP-C:

      @bram the stamp Pico uses the esp32 Pico D3 the Stamp C uses the ESP32 C3 which is a RiscV processor

      Yes, I know that.

      It works fine. But I want a preprocessor define to conditionally compile code.

      posted in Arduino
      Bram
    • Preprocessor defines for STAMP-C

      Hello,

      When I write my code (in Arduino IDE) I like to be able to differentiate between microcontroller targets.

      To check for a Arduino Pro Micro, I use: if defined(ARDUINO_AVR_MICRO) e.g.

      For an Adafruit Trinket M0: if defined(ARDUINO_TRINKET_M0) can be used.

      I tried to determine what I could use for M5STACK STAMP-C.
      But I have been unable to find out what I could use.
      Normally, when I toggle verbose compiler output, I can find a symbol.
      But for a stamp-c compile, I just get:

      /home/bram/.arduino15/packages/m5stack/tools/riscv32-esp-elf-gcc/gcc8_4_0-esp-2021r2/bin/riscv32-esp-elf-g++ -DHAVE_CONFIG_H "-DMBEDTLS_CONFIG_FILE=\"mbedtls/esp_config.h\"" -DUNITY_INCLUDE_CONFIG_H -DWITH_POSIX -D_GNU_SOURCE "-DIDF_VER=\"v4.4-beta1-189-ga79dc75f0a\"" -DESP_PLATFORM -D_POSIX_READER_WRITER_LOCKS -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/config -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/newlib/platform_include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/freertos/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/freertos/include/esp_additions/freertos -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/freertos/port/riscv/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/freertos/include/esp_additions -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hw_support/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hw_support/include/soc -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hw_support/include/soc/esp32c3 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hw_support/port/esp32c3 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hw_support/port/esp32c3/private_include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/heap/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/log/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/lwip/include/apps -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/lwip/include/apps/sntp -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/lwip/lwip/src/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/lwip/port/esp32/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/lwip/port/esp32/include/arch -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/soc/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/soc/esp32c3 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/soc/esp32c3/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/hal/esp32c3/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/hal/include 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-I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_event/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_netif/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_eth/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/tcpip_adapter/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_phy/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_phy/esp32c3/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_ipc/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/app_trace/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_timer/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/mbedtls/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/mbedtls/mbedtls/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/mbedtls/esp_crt_bundle/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/app_update/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/spi_flash/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bootloader_support/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/nvs_flash/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/pthread/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_gdbstub/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_gdbstub/riscv -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_gdbstub/esp32c3 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/espcoredump/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/espcoredump/include/port/riscv -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/wpa_supplicant/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/wpa_supplicant/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/wpa_supplicant/esp_supplicant/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/ieee802154/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/console -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/asio/asio/asio/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/asio/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/common/osi/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/include/esp32c3/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/common/api/include/api -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/common/btc/profile/esp/blufi/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/common/btc/profile/esp/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/bt/host/bluedroid/api/include/api -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/cbor/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/unity/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/unity/unity/src -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/cmock/CMock/src -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/coap/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/coap/libcoap/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/nghttp/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/nghttp/nghttp2/lib/includes -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-tls -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-tls/esp-tls-crypto -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_adc_cal/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_hid/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/tcp_transport/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_http_client/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_http_server/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_https_ota/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_https_server/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_lcd/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_lcd/interface -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/protobuf-c/protobuf-c -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/protocomm/include/common -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/protocomm/include/security -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/protocomm/include/transports -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/mdns/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_local_ctrl/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/sdmmc/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_serial_slave_link/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_websocket_client/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/expat/expat/expat/lib -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/expat/port/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/wear_levelling/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/fatfs/diskio -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/fatfs/vfs -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/fatfs/src -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/freemodbus/common/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/idf_test/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/idf_test/include/esp32c3 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/jsmn/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/json/cJSON -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/libsodium/libsodium/src/libsodium/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/libsodium/port_include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/mqtt/esp-mqtt/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/openssl/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/spiffs/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/wifi_provisioning/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_littlefs/src -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp_littlefs/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/tool -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/typedef -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/image -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/math -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/nn -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/layer -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/detect -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/esp-face/include/model_zoo -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/tools/sdk/esp32c3/include/fb_gfx/include -march=rv32imc -ffunction-sections -fdata-sections -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -Wno-error=format= -nostartfiles -Wno-format -Os -freorder-blocks -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -std=gnu++11 -fno-exceptions -fno-rtti -c -w -x c++ -E -CC -DF_CPU=160000000L -DARDUINO=10820 -DARDUINO_STAMP_C3 -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"STAMP_C3\"" "-DARDUINO_VARIANT=\"m5stack_stamp_c3\"" -DARDUINO_PARTITION_default -DESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_HW_CDC_ON_BOOT=0 @/home/bram/Arduino/builds/build_opt.h -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/cores/esp32 -I/home/bram/.arduino15/packages/m5stack/hardware/esp32/2.0.2/variants/m5stack_stamp_c3 /home/bram/Arduino/builds/sketch/stamptest.ino.cpp -o /dev/null
      

      I cannot use ESP_PLATFORM, as that is too generic.

      Also, esp_config.h does not contain board identifiers.

      Anyone here knows what should be used for conditional compiles on STAMP-C?

      Thanks!

      posted in Arduino
      Bram
    • Stamp-C3 and I2C

      Am I correct in that Stamp-C3 uses GPIO 0/1 for SDA/SCL?

      I saw it labelled as "Port-A." Does that refer to I2C?

      If it is not the default I2C, could I make it the I2C pins by doing this in the Arduino IDE?

      # define I2CSDA 0
      # define I2CSCL 1
      ...
      Wire.begin(I2CSDA, I2CSCL);
      
      posted in PRODUCTS
      Bram