EcoApi pcb

EcoApi Bee hive monitoring

description TBD

Features

• External i2c sensor (ex: as6200, si7021, shtxx, ...)
• Microphone analog with max9814 (FFT with dma)
• Microphone i2s (FFT with dma)
• Weight with load scale using hx711 (opimized for 3.3V with noise filter), calibration by led information
• CPU STM32F411CEU6
• Motion detection using mercure tilt vibration sensor
• Internal i2c sensor (ex: bmp180, bme180, bme280, ...)
• Lora using rfm95w
• Powered battery like : Li-ion, Li-po, 3xNimh, 4xNimh, LifePO4, Alkaline 3x1.5 / 2x1.5, Li-SOCL2, Li-Mn02, 18650
• Reverse battery protection
• USB charger
• Ultra low power in sleep mode (wakeup by external rtc) ~2µA
• Power in running mode TBD
• USB cdc from stm32
• Power switch for internal / external VCC (3.3V)
• Fram
• EEprom
• Flash SPI
• External nano watchdog
• Debug by led, Uart,

Hardware

Characteristics

• Cpu
• Lora
• Consumption
• Fram
• EEprom
• Flash
• Rtc
• WDG
• HX711
• Protection battery
• Backup capacitor explanation
• Battery charger
• USB cdc
• Ldo
• Buck-boost
• Power Load switch
• Wakeup parts (button, wdg, motion, rtc)
• Dip switch
• Connector (load cell, external sensors, Battery, internal sensor, Debug & SWD)
• Push button
• Debug (Uart, USB CDC, SWD)
• ....

Pcb

Front

Back

Pinout

array of pins description

pcb

describ options with 0R resistors. etc ...

JlcPcb production

• Bom and pick&place : https://support.jlcpcb.com/article/153-how-to-generate-bom-and-centroid-files-from-kicad-in-linux
• JlcPcb gerber files : https://support.jlcpcb.com/article/149-how-to-generate-gerber-and-drill-files-in-kicad

Software

To be define (flow chart) ...

Description

• Lora : ttn, webhook for beep, js decoder, frame format
• sensor template
• Sensors auto-detection
• Outside informations (temperature, pressure, humidity, wind, ...)
• Inside informations (Sound, temperature, humidity, gas, bee counter, custom sensor ...)
• System information (RSSI, VBATT,
• describe directive in platforio.ini
• FFT on analog mic or I2S mic (parameters, range etc ...)
• sleep mode

Ide & compilation

• pio
• plugins
• ....

lmic debug

in platformio.ini

(1) uncomment : -D LMIC_DEBUG_LEVEL=2 -D LMIC_ENABLE_event_logging=1 -D LMIC_X_DEBUG_LEVEL=1

(2) replace in lmic/lmic.h :

ifdef LMIC_DEBUG_PRINTF_FN

define LMIC_X_DEBUG_PRINTF(f, ...) LMIC_DEBUG_PRINTF_FN(f, ## VA_ARGS)

else

error "LMIC_DEBUG_PRINTF_FN must be defined for LMIC_X_DEBUG_LEVEL > 0."

endif

by :

#define LMIC_X_DEBUG_PRINTF(f, ...) LMIC_DEBUG_PRINTF(f, ## VA_ARGS)

how to

• Scale full or half
• Tare button
• Led information
• Motion tilt
• Debug
• usb charger leds
• Sleep on VBATT or 3.3V with slide switch
• Dip switch
• USB with android application (flutter.io or other)

other

Editor.md