Closed heinemannj closed 7 months ago
heinemannj
commented
1 year ago I've installed an old ESP-WROOM-32 as well - the same behavior as on ESP32-WROOM-32D.
After power on outside the motor_shield board the following behaviour:
The diff between running with the board and outside the board:
nliaudat
commented
1 year ago You should have some
CH1 closing endstop reached at 0.xxxx V
What are the values you setup for bemf_triggers ?
heinemannj
commented
1 year ago I've reviewed https://github.com/nliaudat/esp32_8ch_motor_shield/issues/9
The same figures. The only difference: I have a newer board v57 rev 1.48
Putting a multimeter between GPIO36 and GND gives everytime 0mV.
Putting a multimeter between below and GND gives around 20mV when the motor is running unhindered and around 53mV at end stops
To simplify I've modified the setup as following:
esphome:
name: floor-heating-1
platform: ESP32
board: nodemcu-32s
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ota:
api:
reboot_timeout: 30min
encryption:
key: "Vs6v9r4OIlSVb4kgKrYRcDLisRDo6uy+vIYIFvuzi2E="
web_server:
port: 80
sn74hc595:
- id: 'sn74hc595_hub'
data_pin: GPIO16 #Pin connected to SN74HC595 SER input
clock_pin: GPIO5 #Pin connected to SN74HC595 SRCLK pin
latch_pin: GPIO17 #Pin connected to SN74HC595 RCLK pin
oe_pin: GPIO18 ### needed by esphome, but connected to GND (outputEnable is used only for pwm all th pin)
sr_count: 2 #Number of daisy-chained shift registers, up-to 4
# Enable logging
logger:
level: DEBUG #NONE# ERROR #INFO #DEBUG #VERBOSE
baud_rate: 0 #to disable logging via UART
logs:
adc: DEBUG
switch:
### CH1
- platform: gpio
name: "CH1 IA"
pin:
sn74hc595: sn74hc595_hub
number: 0
inverted: False
internal: false
id: CH1_IA_pin
interlock: &interlock_group_CH1 [CH1_IA_pin, CH1_IB_pin]
restore_mode: always off
- platform: gpio
name: "CH1 IB"
pin:
sn74hc595: sn74hc595_hub
number: 1
inverted: False
internal: false
id: CH1_IB_pin
interlock: *interlock_group_CH1
restore_mode: always off
sensor:
- platform: adc
id : BEMF_1_2_sensor_ADC
pin: GPIO36
name: "BEMF 1" #CH1 + CH2
update_interval: 500ms
attenuation : auto
# raw: true
# filters:
# - multiply: 0.00026862INFO ESPHome 2023.10.3
INFO Reading configuration /config/esphome/floor-heating-1.yaml...
WARNING GPIO5 is a Strapping PIN and should be avoided.
Attaching external pullup/down resistors to strapping pins can cause unexpected failures.
See https://esphome.io/guides/faq.html#why-am-i-getting-a-warning-about-strapping-pins
INFO Generating C++ source...
INFO Compiling app...
Processing floor-heating-1 (board: nodemcu-32s; framework: arduino; platform: platformio/espressif32@5.4.0)
--------------------------------------------------------------------------------
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
- toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch5
Dependency Graph
|-- AsyncTCP-esphome @ 2.0.1
|-- WiFi @ 2.0.0
|-- FS @ 2.0.0
|-- Update @ 2.0.0
|-- ESPAsyncWebServer-esphome @ 3.1.0
|-- ESPmDNS @ 2.0.0
|-- noise-c @ 0.1.4
|-- ArduinoJson @ 6.18.5
Compiling .pioenvs/floor-heating-1/src/main.cpp.o
Linking .pioenvs/floor-heating-1/firmware.elf
RAM: [= ] 12.3% (used 40356 bytes from 327680 bytes)
Flash: [===== ] 50.4% (used 924825 bytes from 1835008 bytes)
Building .pioenvs/floor-heating-1/firmware.bin
Creating esp32 image...
Successfully created esp32 image.
esp32_create_combined_bin([".pioenvs/floor-heating-1/firmware.bin"], [".pioenvs/floor-heating-1/firmware.elf"])
Wrote 0xf3320 bytes to file /data/build/floor-heating-1/.pioenvs/floor-heating-1/firmware-factory.bin, ready to flash to offset 0x0
========================= [SUCCESS] Took 49.18 seconds =========================
INFO Successfully compiled program.
INFO Resolving IP address of floor-heating-1.local
INFO -> 192.168.178.147
INFO Uploading /data/build/floor-heating-1/.pioenvs/floor-heating-1/firmware.bin (930592 bytes)
Uploading: [============================================================] 100% Done...
INFO Waiting for result...
INFO OTA successful
INFO Successfully uploaded program.
INFO Starting log output from floor-heating-1.local using esphome API
INFO Successfully connected to floor-heating-1.local
[15:13:24][I][app:102]: ESPHome version 2023.10.3 compiled on Oct 28 2023, 15:12:26
[15:13:24][C][wifi:546]: WiFi:
[15:13:24][C][wifi:382]: Local MAC: EC:62:60:77:83:1C
[15:13:24][C][wifi:383]: SSID: [redacted]
[15:13:24][C][wifi:384]: IP Address: 192.168.178.147
[15:13:24][C][wifi:386]: BSSID: [redacted]
[15:13:24][C][wifi:387]: Hostname: 'floor-heating-1'
[15:13:24][C][wifi:389]: Signal strength: -38 dB ▂▄▆█
[15:13:24][C][wifi:393]: Channel: 1
[15:13:24][C][wifi:394]: Subnet: 255.255.255.0
[15:13:24][C][wifi:395]: Gateway: 192.168.178.1
[15:13:24][C][wifi:396]: DNS1: 192.168.178.1
[15:13:24][C][wifi:397]: DNS2: 0.0.0.0
[15:13:24][C][logger:416]: Logger:
[15:13:24][C][logger:417]: Level: DEBUG
[15:13:24][C][logger:418]: Log Baud Rate: 0
[15:13:24][C][logger:420]: Hardware UART: UART0
[15:13:24][C][logger:424]: Level for 'adc': DEBUG
[15:13:24][C][sn74hc595:029]: SN74HC595:
[15:13:24][C][switch.gpio:068]: GPIO Switch 'CH1 IA'
[15:13:24][C][switch.gpio:091]: Restore Mode: always OFF
[15:13:24][C][switch.gpio:031]: Pin: 0 via SN74HC595
[15:13:24][C][switch.gpio:033]: Interlocks:
[15:13:24][C][switch.gpio:037]: CH1 IB
[15:13:24][C][switch.gpio:068]: GPIO Switch 'CH1 IB'
[15:13:24][C][switch.gpio:091]: Restore Mode: always OFF
[15:13:24][C][switch.gpio:031]: Pin: 1 via SN74HC595
[15:13:24][C][switch.gpio:033]: Interlocks:
[15:13:24][C][switch.gpio:037]: CH1 IA
[15:13:24][C][adc:097]: ADC Sensor 'BEMF 1'
[15:13:24][C][adc:097]: Device Class: 'voltage'
[15:13:24][C][adc:097]: State Class: 'measurement'
[15:13:24][C][adc:097]: Unit of Measurement: 'V'
[15:13:24][C][adc:097]: Accuracy Decimals: 2
[15:13:24][C][adc:107]: Pin: GPIO36
[15:13:24][C][adc:109]: Attenuation: auto
[15:13:24][C][adc:142]: Update Interval: 0.5s
[15:13:24][C][web_server:161]: Web Server:
[15:13:24][C][web_server:162]: Address: floor-heating-1.local:80
[15:13:24][C][mdns:115]: mDNS:
[15:13:24][C][mdns:116]: Hostname: floor-heating-1
[15:13:24][C][ota:097]: Over-The-Air Updates:
[15:13:24][C][ota:098]: Address: floor-heating-1.local:3232
[15:13:24][C][api:138]: API Server:
[15:13:24][C][api:139]: Address: floor-heating-1.local:6053
[15:13:24][C][api:141]: Using noise encryption: YES
[15:13:24][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:24][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:25][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:25][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:26][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:26][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:27][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:27][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:28][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:28][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:29][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:29][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:30][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:30][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:31][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:31][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:32][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:32][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:33][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:33][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:34][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:34][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:35][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:35][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:36][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:36][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:37][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:37][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:38][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:38][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:39][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:39][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:40][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:40][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:41][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:41][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:42][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:42][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:43][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:43][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:44][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:44][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:45][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:45][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:46][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:46][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:47][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:47][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:48][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:48][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:49][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:49][D][switch:012]: 'CH1 IB' Turning ON.
[15:13:49][D][switch:055]: 'CH1 IB': Sending state ON
[15:13:49][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:50][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:50][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:51][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:51][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:52][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:52][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:53][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:53][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:54][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:54][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:55][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:55][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:56][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:56][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:57][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:57][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:58][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:58][D][switch:016]: 'CH1 IB' Turning OFF.
[15:13:58][D][switch:055]: 'CH1 IB': Sending state OFF
[15:13:58][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:59][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:13:59][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:14:00][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:14:00][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:14:01][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracy
[15:14:01][D][sensor:094]: 'BEMF 1': Sending state 0.07500 V with 2 decimals of accuracyIf you want help, do not use custom firmware as some changes may trouble :
update_interval: 500ms
0.07500 V means 0V
You must give more information !
nliaudat
commented
1 year ago nliaudat
commented
1 year ago Your screenshots are the same as https://github.com/nliaudat/esp32_8ch_motor_shield/discussions/41
Not an issue
heinemannj
commented
1 year ago Ohh - very precise instruction - Thanks:
1a) without motor activity: 3.29 V 1b) with motor activity (endpoint): 3.29 V
2a) without motor activity: 0.000 V 2b) with motor activity (endpoint): 0.055 V
3a) without motor activity: 0.000 V 3b) with motor activity (endpoint): 0.053 V
4a) without motor activity: 0.000 V 4b) with motor activity (endpoint): 0.004 V
5) I have the prevois board - how to measure?
6a) without motor activity: 0.000 V 6b) with motor activity (endpoint): 0.000 V
Same board as in https://github.com/nliaudat/esp32_8ch_motor_shield/discussions/41 Potentially other valves
heinemannj
commented
1 year ago For above testings I've modified config to your actual esphome settings:
sensor:
#ADC2 pins cannot be used when Wi-Fi is used
### new version with opamp
## in use the motor use 15-20 mV. At endstop, it raise to 50 mV
- platform: adc
pin: GPIO36
name: "BEMF 1" #CH1 + CH2
update_interval: 100ms
attenuation : 0db
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_1_2_sensor_ADC5) I have the prevois board - how to measure?
5a) without motor activity: 0.000 V 5b) with motor activity (endpoint): 0.048 V
nliaudat
commented
1 year ago GPIO36 is not ADC2 if you use default board config :
esp32:
board: nodemcu-32sFollowing the information you provided, I mean you LM324 opamp is not working.
Have you jumper cable to bypass it ?
heinemannj
commented
1 year ago GPIO36 is not ADC2 if you use default board config: I don't understand ...
I use your defaults:
esphome:
name: floor-heating-1
platform: ESP32
board: nodemcu-32sCable bypass:
I've tried with a simple unsoldered cable ( Flow tested) - but no progress
without motor activity: 0.000 V with motor activity (endpoint): 0.000 V
nliaudat
commented
1 year ago You had good values in 2b) with motor activity (endpoint): 0.055 V. I do not understand why the opamps kills the voltage :(
1st) With GPIO36, I mean perhaps you have a different esp32 devkit board with some different pinout. Can you check the label linked with CH1-2BEMF ?
Some references for pinout : https://www.upesy.com/blogs/tutorials/esp32-pinout-reference-gpio-pins-ultimate-guide?shpxid=501c40ad-44e6-487b-9aaa-15e0d69a7f22
2nd) If you can solder, perhaps the best way to go is cutting the BEMF1-2 cutout and manual wiring :
heinemannj
commented
1 year ago 1) NO different pin layout
2) I can solder, but I'm asking myself why to disturb your nearly newest board design?
If you can support with a working hardware solution - highly appreciated. To be frankly: For me it's not a question of money ...
I want's to have a prove of concept that an "outside temperature and weather-compensated return flow temperature heating control" can be realized very smoothly with your board, esphome and Home Assistant.
https://github.com/nliaudat/esp32_8ch_motor_shield/issues/4 https://github.com/heinemannj/Hydraulic-Balancing/edit/main/README.md
I've already modified your code and the mayority is working well ... I need controlable valves to confirm - and for sure I will share within your project.
nliaudat
commented
1 year ago I really mean your LM324 opamp module is dead ! The opamp is not really needed, but increase voltage precision, that's why I propose you to bypass it
If you want to debug further, we need more steps. I have really tested all released version of the board and all are working. (The first one had a shortcut between CH7 & 8, that wasn't detected cause the valves cannot run at same time)
Do you have a laboratory power supply ? If not, a 1.5V battery will do half the job, or resistances
1) LM324 test (without ESP32): You must have 6x the input voltage as output per channel
2) Will need to test ADC inputs with direct power supply on GPIO36 (CH1-2), GPIO39 (CH3-4), GPIO34(5-6), GPIO35(7-8) (whitout shield) Some bad ESP32 boards do not have onboard calibration data and may have strange results.
3) Have you the same behaviour with channel 7 (or others) (full assembly) ?
heinemannj
commented
1 year ago Can you please provide me a working board plus ESP32 board for further testing - I beleave hardcore debugging is out of my possibilities ... - Maybe it's to late this evening ...
Sorry
heinemannj
commented
1 year ago Ok - Let's try to move forward.
Actually I've a broken floor heating system - the old 6x valves (on/off) are broken and needs to be replaced. The 6x new homematic valves are not controllable at this time. => all six heating circuits are open all the time, not the worstcase because my heating pump is more or less able to control ...
For further tests I'm using a battery: 1.208 V
LM324 test (without ESP32):
For all channels 1) - 8):
Between VCC and GND: 0.888 V from battery
12in and GND: 0.572 V
12out and GND: 0.004 V
34in and GND: 0.572 V
34out and GND: 0.004 V
56in and GND: 0.572 V
56out and GND: 0.004 V
78in and GND: 0.572 V
78out and GND: 0.004 VSame figures as above if I'm powering via board power supply - again without ESP.
Between VCC and GND: 3.23 V from power supply
If I understand you correctly above measurement are proven evidences that my board is broken - Right?
Please confirm.
nliaudat
commented
1 year ago The opamp must have 3.3V power to work. Have you power on it ?
Regards
heinemannj
commented
1 year ago ADC inputs with direct power supply on GPIO36 (CH1-2), GPIO39 (CH3-4), GPIO34(5-6), GPIO35(7-8) (whitout conroller board):
Power value by multimeter: 1.347 V
By ESP on GPIO36: 1.294 V - platform: adc
pin: GPIO36
name: "BEMF 1" #CH1 + CH2
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_1_2_sensor_ADC=> With offset -4% difference => Without offset 1.369 V => +1.6 % difference
Shortcut between GPIO36, GPIO39, GPIO34 and GPIO35:
sensor:
#ADC2 pins cannot be used when Wi-Fi is used
### new version with opamp
## in use the motor use 15-20 mV. At endstop, it raise to 50 mV
- platform: adc
pin: GPIO36
name: "BEMF 1" #CH1 + CH2
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_1_2_sensor_ADC
- platform: adc
pin: GPIO39
name: "BEMF 2" #CH3 + CH4
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_3_4_sensor_ADC
- platform: adc
pin: GPIO34
name: "BEMF 3" #CH5 + CH6
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_5_6_sensor_ADC
- platform: adc
pin: GPIO35
name: "BEMF 4" #CH7 + CH8
update_interval: 100ms
attenuation : auto
accuracy_decimals: 3
filters:
- offset: -0.075
- sliding_window_moving_average:
window_size: 9
send_every: 9
id : BEMF_7_8_sensor_ADCPower value by multimeter: 1.364 V
=> With offset 1.310/1.364 = -4% difference => Without offset (1.310+0.075)/1.364 V => +1.54 % difference
heinemannj
commented
1 year ago The opamp must have 3.3V power to work. Have you power on it ?
Regards
Yes - this was my second round of testing with 3.3 V from the board without ESP
nliaudat
commented
1 year ago ADC works but LM324 is dead.
The only solution is to cut the BEMF linked to opamp
It can be reversed if you can solder ....
heinemannj
commented
1 year ago Must I really cut the connections from BEMF to GPIOs or are the shortcuts between the GPIOs the different channels sufficient enough?
I have Pin headers and I can solder them. The shortcut with jumper cables are also possible.
heinemannj
commented
1 year ago I've found a potentiometer to reduce the input power :-)
Power value by multimeter: 0.073 V
=> With offset 0.007/0.073 V = -4.1% difference => Without offset (0.007+0.075)/0.073 V => +12.3 % difference
Second try after changing the ADC offset from 0.075 to 0.000 V:
Power value by multimeter: 0.068 V
=> Without offset 0.076)/0.068 V => +11.8 % difference
=> The lowest power I can measure with my ESP32-WROM-32D is: 68 mV
With a maximum sensitivity of 68 mV, my ESP cannot detect motor activity and especially the endpoint (measured as ~55 mV).
Question: Can a self made calibration of the ESP32 can shift up the ADS sensitivity?
nliaudat
commented
1 year ago They are too many problems ! You ESP32 board do not read ADC under 68mv (as it should read 20mv to 3.3v) The opamp do not work
There are 2 solutions : change either shield or ESP32.
heinemannj
commented
1 year ago OK - I will change both.
What kind of ESP do you recommend and where to buy? From whom I can order a new board?
nliaudat
commented
1 year ago Some people sells boards in https://github.com/nliaudat/esp32_8ch_motor_shield/discussions You can order yourself at jlcpcb.com
heinemannj
commented
1 year ago Are there better alternatives than ESP32-WROOM-32D which can be used by the board?
nliaudat
commented
1 year ago new ESP32 C6 or S6 have better ADC. I haven't tested actually.
heinemannj
commented
1 year ago They are really fitting into the board sockets - I beleave they have 2 or four pins less?
heinemannj
commented
1 year ago I try to order boards at jlcpcb.com, but I get the following error message:
heinemannj
commented
1 year ago I've ordered at jlcpcb.com
In the meantime I will try the approach to dual ads1115 as adc for all channels as proposed by https://github.com/nliaudat/esp32_8ch_motor_shield/discussions/19#discussioncomment-3724593
heinemannj
commented
1 year ago nliaudat
commented
1 year ago I try to order boards at jlcpcb.com, but I get the following error message:
Normally, that's all holes or pin headers
WMP
commented
1 year ago My discusion : https://github.com/nliaudat/esp32_8ch_motor_shield/discussions/41 and this issue describe the same problem. I gave my PCB with the actuators and esp32 to an electrical engineering service. After some time I hear from the electrical engineer that during start-up the actuators have a very high current, several A's. The electrical engineer added a 200 µF capacitor but it didn't help. Today I got the information (fast, no specifics) that the problem is a badly sized LM324, because the actuators have a much higher short-circuit current than the LM324 can handle. The engineer is to find a better model.
Checking the specification, I see that all LMs.... have an Isc of 40mA to 60mA, and the actuator in the first picture says max 120mA. In the LM specification it says: "Short circuits from outputs to VCC can cause excessive heating and eventual destruction." . So you may be right in saying that the LM324 is faulty, as it could have been damaged by the first actuator start.
I wonder if the use of LM is even possible for these actuators.
heinemannj
commented
1 year ago After hardcore tests porposed during last weekend my board related to BEMF ist completly dead - direct shortcut on all 8 BEMF channels ...
This is may be inline with above findings ....
Cheers Joerg
On Tue, 31 Oct 2023 at 15:11, WMP @.***> wrote:
My discusion : #41 https://github.com/nliaudat/esp32_8ch_motor_shield/discussions/41 and this issue describe the same problem. I gave my PCB with the actuators and esp32 to an electrical engineering service. After some time I hear from the electrical engineer that during start-up the actuators have a very high current, several A's. The electrical engineer added a 200 µF capacitor but it didn't help. Today I got the information (fast, no specifics) that the problem is a badly sized LM324, because the actuators have a much higher short-circuit current than the LM324 can handle. The engineer is to find a better model.
Checking the specification, I see that all LMs.... have an Isc of 40mA to 60mA, and the actuator in the first picture says max 120mA. In the LM specification it says: "Short circuits from outputs to VCC can cause excessive heating and eventual destruction." . So you may be right in saying that the LM324 is faulty, as it could have been damaged by the first actuator start.
I wonder if the use of LM is even possible for these actuators.
— Reply to this email directly, view it on GitHub https://github.com/nliaudat/esp32_8ch_motor_shield/issues/46#issuecomment-1787298334, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAYZ3OT6GF7GTOYLPS6DBRLYCEBH7AVCNFSM6AAAAAA6TSBRE6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTOOBXGI4TQMZTGQ . You are receiving this because you authored the thread.Message ID: @.***>
nliaudat
commented
1 year ago The LM324 module capture the value of BEMF (Back electrical motor force). I found very strange that the BEMF would be greater than the max current handled by motor (120ma) I'll make tests.
The Isc of 40mA to 60mA is the "max output current" the LM324 can boosts per channel, not related about input.
@Karl-opec : What do you think of @WMP comments about the LM324 ?
Regards
heinemannj
commented
1 year ago I have ordered and tested a third ESP32D:
=> The lowest power I can measure with my ESP32-WROM-32D is: 75 mV
ESPHome documentation is clearly stating, that on ESP32 the lowest adc voltage is ~0.075V: https://esphome.io/components/sensor/adc.html
heinemannj
commented
1 year ago Testing the approach with a single ads1115:
=> The lowest power I can measure with my ESP32-WROM-32D is: 0.000040 V => 0.04 mV
The usage of a single ads1115 is providing:
heinemannj
commented
1 year ago Setup:
nliaudat
commented
1 year ago ads1115 is like LM324 but much more expensive
Karl-opec
commented
8 months ago The LM324 module capture the value of BEMF (Back electrical motor force). I found very strange that the BEMF would be greater than the max current handled by motor (120ma) I'll make tests.
The Isc of 40mA to 60mA is the "max output current" the LM324 can boosts per channel, not related about input.
@Karl-opec : What do you think of @WMP comments about the LM324 ?
Regards
The LM324 does not drive the valves. it only amplifies the voltages over current resistors to get them in workable ranges for measurement by the esp32. the blocking current of the valves are approx. 35mA. Over the resistor this gives 35mV. The LM324 amplifies these voltages by 6 to approx. 180mV. This is the voltage at which the ESP32 switches of the valve.
Karl-opec
commented
7 months ago Issue #55 fits to this problem also.
WMP
commented
7 months ago Yes, it would be great if a fixed version with rs11 was published.
nliaudat
commented
7 months ago Yes, it would be great if a fixed version with rs11 was published.
https://github.com/nliaudat/esp32_8ch_motor_shield/releases/tag/v57
This is the last update (fix) to RJ11 version. It's too complicated to maintain old version and for the few Homematic actuator owners, the only need to cut the RJ11 connector and follow https://github.com/nliaudat/esp32_8ch_motor_shield/blob/main/VDMOT_wiring.md
Valves are working but by reaching the endstop point there is more then 10 secs tock tock tock and the valve is pressed from the ventil.
board version v57 rev 1.48
ESPRESSiF ESP32-WROOM-32D
Homematic valve actuators [HmIP-VDMOT]