Hi all,
i’ve been looking for a solution everywhere, but haven’t foud any solution and it’s driving me crazy.
I’m building a weather station, with a wind speed sensor, light meter, rain sensor and bme280 via i2c.
Well, all work on the breadboard, but when i put it on a perfboard with the same wiring, i obtain this error
[18:06:25][C][i2c.arduino:038]: I2C Bus:
[18:06:25][C][i2c.arduino:039]: SDA Pin: GPIO21
[18:06:25][C][i2c.arduino:040]: SCL Pin: GPIO22
[18:06:25][C][i2c.arduino:041]: Frequency: 50000 Hz
[18:06:25][C][i2c.arduino:047]: Recovery: failed, SCL is held low on the bus
[18:06:25][I][i2c.arduino:054]: Results from i2c bus scan:
[18:06:25][E][i2c.arduino:062]: Unknown error at address 0x08
[18:06:25][E][i2c.arduino:062]: Unknown error at address 0x09
and so on for every i2c address.
if i put it on the breadborad
[18:11:36][C][i2c.arduino:038]: I2C Bus:
[18:11:36][C][i2c.arduino:039]: SDA Pin: GPIO21
[18:11:36][C][i2c.arduino:040]: SCL Pin: GPIO22
[18:11:36][C][i2c.arduino:041]: Frequency: 50000 Hz
[18:11:36][C][i2c.arduino:044]: Recovery: bus successfully recovered
[18:11:36][I][i2c.arduino:054]: Results from i2c bus scan:
[18:11:36][I][i2c.arduino:060]: Found i2c device at address 0x77
everything works.
I’ve checked every wiring on the perfboard with the multimeter, no short circuit, everything works… the cable is an awg28 used to
This is the wiring
Clearly the wiring on the perfboard is incomplete, seems like the cable is making some resistance?
forgive me for the not perfect soldering, i’m not an expert…
and this is my yaml configuration.
substitutions:
nome: weather-station
nome_esteso: Stazione meteo
updtime_interval: 60s
wifi_interval: 60s
update_interval: 60s
esphome:
name: $nome
esp32:
board: az-delivery-devkit-v4
framework:
type: arduino
# Enable Home Assistant API
api:
encryption:
key: !secret api_encryption_key
ota:
password: !secret ota_password
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: !secret weather_station_ip
gateway: !secret gateway
subnet: 255.255.255.0
domain: !secret domain
reboot_timeout: 5min
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Weather Station Fallback Hotspot"
password: !secret ap_password
captive_portal:
# Enable logging
logger:
mqtt:
broker: !secret mqtt_broker
username: !secret mqtt_user
password: !secret mqtt_pass
discovery: True
client_id: weather-1.40
i2c:
sda: 21
scl: 22
scan: True
id: bus_bme
text_sensor:
- platform: template
name: $(nome_esteso) Uptime
id: weather_station_uptime
icon: mdi:clock-start
switch:
- platform: restart
name: "$nome_esteso Restart"
sensor:
- platform: wifi_signal
name: "$(nome_esteso) Wifi Signal Sensor"
update_interval: 300s
id: weather_station_wifi_signal_sensor
- platform: uptime
name: $(nome_esteso) Uptime Sensor
id: weather_station_uptime_sensor
update_interval: 300s
on_raw_value:
then:
- text_sensor.template.publish:
id: weather_station_uptime
state: !lambda |-
int seconds = round(id(weather_station_uptime_sensor).raw_state);
int days = seconds / (24 * 3600);
seconds = seconds % (24 * 3600);
int hours = seconds / 3600;
seconds = seconds % 3600;
int minutes = seconds / 60;
seconds = seconds % 60;
return (
(days ? String(days) + "d " : "") +
(hours ? String(hours) + "h " : "") +
(minutes ? String(minutes) + "m " : "") +
(String(seconds) + "s")
).c_str();
#########################################
# PULSE COUNTER FOR ANEMOMETER
#########################################
- platform: pulse_counter
pin:
number: 23
mode: INPUT_PULLUP
unit_of_measurement: 'm/s'
name: 'Sensore Vento'
icon: 'mdi:weather-windy'
id: wind_sensor
count_mode:
rising_edge: DISABLE
falling_edge: INCREMENT
internal_filter: 13us
update_interval: 2s
accuracy_decimals: 2
filters:
- sliding_window_moving_average:
window_size: 4
send_every: 4
send_first_at: 1
# rotations_per_sec = pulses / 2 / 60
# circ_m = 0.06 * 2 * 3.14 = 0.3768
# mps = 1.18 * circ_m * rotations_per_sec
# mps = 1.18 * 0.3768 / 2 / 60 = 0,0037052
#- multiply: 0.0031939525
- multiply: 0.0037052
#- max:
# window_size: 20
# send_every: 5
# send_first_at: 1
on_value:
then:
- sensor.template.publish:
id: sensore_vento_kmh
state: !lambda "return x;"
- sensor.template.publish:
id: sensore_vento_ms
state: !lambda "return x;"
# on_raw_value:
# then:
# - sensor.template.publish:
# id: sensore_vento
# state: !lambda "return x;"
- platform: template
name: "Velocità del Vento Km/h"
id: sensore_vento_kmh
unit_of_measurement: 'Km/h'
update_interval: 5s
accuracy_decimals: 2
icon: 'mdi:weather-windy'
filters:
- multiply: 3.6
- platform: template
name: "Velocità del Vento m/s"
id: sensore_vento_ms
unit_of_measurement: 'm/s'
update_interval: 1s
accuracy_decimals: 2
icon: 'mdi:weather-windy'
#########################################
# BME280 TEMPERATURE, PRESSURE, HUMIDITY
#########################################
- platform: bme280
address: "0x77"
update_interval: 1s
iir_filter: 16x
temperature:
name: "Temperatura (BME280)"
oversampling: 16x
id: bme280_temperature
pressure:
name: "Pressione (BME280)"
id: bme280_pressure
icon: mdi:gauge
oversampling: 16x
filters:
#filtro per la correzione della pressione atmosferica basato su dati sperimentali di prossimità
- multiply: 1.0218963439132181599035757332262
humidity:
name: "Umidità (BME280)"
id: bme280_humidity
oversampling: 16x
icon: mdi:water-percent
- platform: template
name: "Altitudine"
id: altitude
lambda: |-
const float STANDARD_SEA_LEVEL_PRESSURE = 1018; //in hPa, see note
return ((id(bme280_temperature).state + 273.15) / 0.0065) *
(powf((STANDARD_SEA_LEVEL_PRESSURE / id(bme280_pressure).state), 0.190234) - 1); // in meter
update_interval: 15s
icon: 'mdi:signal'
unit_of_measurement: 'm'
- platform: template
name: "Umidità Assoluta"
lambda: |-
const float mw = 18.01534; // molar mass of water g/mol
const float r = 8.31447215; // Universal gas constant J/mol/K
return (6.112 * powf(2.718281828, (17.67 * id(bme280_temperature).state) /
(id(bme280_temperature).state + 243.5)) * id(bme280_humidity).state * mw) /
((273.15 + id(bme280_temperature).state) * r); // in grams/m^3
accuracy_decimals: 2
update_interval: 60s
icon: 'mdi:water'
unit_of_measurement: 'g/m³'
- platform: template
name: "Punto di brina"
lambda: |-
return (243.5*(log(id(bme280_humidity).state/100)+((17.67*id(bme280_temperature).state)/
(243.5+id(bme280_temperature).state)))/(17.67-log(id(bme280_humidity).state/100)-
((17.67*id(bme280_temperature).state)/(243.5+id(bme280_temperature).state))));
unit_of_measurement: °C
icon: 'mdi:thermometer-alert'
update_interval: 60s
#########################################
# RAIN SENSOR
#########################################
- platform: resistance
sensor: sensore_pioggia_adc
configuration: UPSTREAM
resistor: 1kOhm
name: Sensore pioggia
- platform: adc
id: sensore_pioggia_adc
name: Sensore pioggia ADC
attenuation: 11db
pin: 32
update_interval: 2s
#filters:
# - multiply: 0.846153846153
#########################################
# LIGHT SENSOR
#########################################
- platform: resistance
sensor: sensore_luce_adc
configuration: DOWNSTREAM
resistor: 1989Ohm
name: Sensore luce
- platform: adc
id: sensore_luce_adc
name: Sensore luce ADC
attenuation: 11db
pin: 33
update_interval: 2s
#filters:
# - multiply: 0.846153846153
- platform: template
name: "Luminosità (Lux)"
id: luce_lux
unit_of_measurement: 'lux'
update_interval: 2s
accuracy_decimals: 0
icon: 'mdi:white-balance-sunny'
lambda: |-
const float Vin = 3.3;
const float R1=1.989;
const float MULTIPLIER = 1.25;
return MULTIPLIER*500*(Vin-id(sensore_luce_adc).state)/(R1*id(sensore_luce_adc).state);
#########################################
# RAIN SENSOR
#########################################
binary_sensor:
- platform: gpio
pin:
number: 18
mode: INPUT
inverted: true
device_class: moisture
id: sensore_pioggia
name: Sensore pioggia
#icon: mdi:weather-rainy
#update_interval: 2s
Can someone please point me in the right direction?
Thanks in advance
fabrizio
