NORVI IIOT-AE04-V2 https://norvi.lk/industrial-esp32-norvi-iiot/#IIOT_Models
Compile using "ESP32 Dev Module" 240mhz
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
STAGE 1 (No automation, control by serial, No web interface yet)
- Serial displays all debug and status code
- OLED copys serial output?
- Pump and Transformer relays controlled with code
- Serial read out for all sensors mapped
- Serial readout of pressure sensor using interpolated lookup table
- Auto variac motor PID program
- Serial readout of temp sensors
- SD card test only
- OK / ALARM state reset via panel button
STAGE 2 (Web monitoring, control by website)
- OLED Displays important Wifi connection info and status
- Pump and Transformer relays Web ON/OFF button https://randomnerdtutorials.com/esp32-web-server-arduino-ide/
- Web read out for all sensors in RAW and Volts
- Web readout of mapped pressure sensor using graph
- Web slider for variac PID input https://randomnerdtutorials.com/esp32-web-server-slider-pwm/
- Web readout of temp sensors https://randomnerdtutorials.com/esp32-ds18b20-temperature-arduino-ide/
- SD card to store CSS/HTML files https://randomnerdtutorials.com/esp32-web-server-microsd-card/
- Wifi manager Access Point using https://github.com/tzapu/WiFiManager
- OK / ALARM state that needs a reset button on webpage. OLED and Web to display ALARM code/reason
STAGE 3 (Automated standalone, remote monitoring)
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Pinout
| Description | Terminal | Cable Colour | Voltage | Voltage Divider | GPIO | Notes |
|---|---|---|---|---|---|---|
| Vacuum Pressure | A0 | White | 2-8v / | 0.8-3.2v | ADC1 CH0 | |
| Variac Volts Input | A1 | Blue | 0-300V / 0-10v | 0-4v | ADC1 CH1 | |
| Variac Amps Input | A2 | Yellow | 0-2A / 0-4v | 0-4v | ADC1 CH2 | |
| NST Volts Input | A3 | White | 0-10kv / 0-4v | 0-2v GAIN 2 | ADC2 CH0 | 200M / 100K |
| NST Amps Input | A4 | Green | 0-50mA / 0-4v | 0-2v GAIN 2 | ADC2 CH1 | 100ohm / 50mA / 5v |
| Vacuum Pump Relay | T0 | Yellow | 24v | GPIO26 | ||
| Variac Relay | T1 | Yellow | 24v | GPIO27 | ||
| Safety Switch | I2 | Yellow | 24v | GPIO34 | Safety switch |
- Buttons on faceplate - GPIO32 analog input resistor ladder
IDC10 expansion connector pinout
| Description | Terminal | Cable Colour | Voltage | GPIO | Notes |
|---|---|---|---|---|---|
| DS18S20 Data | 1 | Yellow | Data | IO25 | Data for all sensors |
| DS18S20 3.3v | 7 | Red | Power | 3.3v | |
| Motor driver | 8 | Blue | IN1 | IO17 | PWM |
| DS18S20 Gnd | 9 | Black | GND | GND | |
| Motor driver | 10 | Green | IN2 | IO16 | PWM |
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Triggers that cause an ALARM state, switch OFF both pump and High Voltage relays. Wait for RESET on web
| Alarm Event | Description |
|---|---|
| VACCUUM_PUMP_TEMP_MAX is reached | Pump overheated |
| PUMP_TIMEOUT is reached | Seal leak causing it to never get to vacuum |
| TRANSFORMER_TEMP_MAX | Transformer overheated |
| PLASMA_PLATE_TEMP_MAX is reached | Plasma causing too much heat |
| MIN_PRESSURE reached | Cracked glass exposing HV element |
| SAFETY_SWITCH trigger | Removal of plinth cover vacuum ok but no HV |
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
| Settings | Description |
|---|---|
| MAX_VOLTAGE | Voltage input limit to variac |
| MAX_PRESSURE | Pressure to turn off vacuum pump |
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Pressure sensor volts/pressure table
| Volts | Pressure (Torr) | Scientific Notation |
|---|---|---|
| 2 | 0.00000075 | < 7.5 x 10e-7 |
| 2.05 | 0.000062 | 6.20 x 10e-5 |
| 2.1 | 0.00017 | 1.70 x 10e-4 |
| 2.2 | 0.000375 | 3.75 x 10e-4 |
| 2.4 | 0.00081 | 8.10 x 10e-4 |
| 2.6 | 0.00126 | 1.26 x 10e-3 |
| 2.8 | 0.00195 | 1.95 x 10e-3 |
| 3 | 0.00288 | 2.88 x 10e-3 |
| 3.2 | 0.00386 | 3.86 x 10e-3 |
| 3.4 | 0.00515 | 5.15 x 10e-3 |
| 3.6 | 0.00788 | 7.88 x 10e-3 |
| 3.8 | 0.0117 | 1.17 x 10e-2 |
| 4 | 0.0158 | 1.58 x 10e-2 |
| 4.2 | 0.0208 | 2.08 x 10e-2 |
| 4.4 | 0.0259 | 2.59 x 10e-2 |
| 4.6 | 0.0312 | 3.12 x 10e-2 |
| 4.8 | 0.0378 | 3.78 x 10e-2 |
| 5 | 0.0444 | 4.44 x 10e-2 |
| 5.2 | 0.0656 | 6.56 x 10e-2 |
| 5.4 | 0.0953 | 9.53 x 10e-2 |
| 5.6 | 0.128 | 1.28 x 10e-1 |
| 5.8 | 0.167 | 1.67 x 10e-1 |
| 6 | 0.218 | 2.18 x 10e-1 |
| 6.2 | 0.268 | 2.68 x 10e-1 |
| 6.4 | 0.326 | 3.26 x 10e-1 |
| 6.6 | 0.4 | 4.00 x 10e-1 |
| 6.8 | 0.48 | 4.80 x 10e-1 |
| 7 | 0.575 | 5.75 x 10e-1 |
| 7.2 | 0.692 | 6.92 x 10e-1 |
| 7.4 | 0.855 | 8.55 x 10e-1 |
| 7.6 | 1.05 | 1.05 |
| 7.8 | 1.25 | 1.25 |
| 8 | 1.44 | 1.44 |
| 8.2 | 1.79 | 1.79 |
| 8.4 | 2.21 | 2.21 |
| 8.6 | 2.63 | 2.63 |
| 8.8 | 3.13 | 3.13 |
| 9 | 4.05 | 4.05 |
| 9.2 | 5.3 | 5.3 |
| 9.4 | 7.27 | 7.27 |
| 9.5 | 9.68 | 9.68 |
| 9.6 | 12.4 | 1.24 x 10e1 |
| 9.7 | 15.5 | 1.55 x 10e1 |
| 9.8 | 25.4 | 2.54 x 10e1 |
| 9.9 | 47.4 | 4.74 x 10e1 |
| 9.95 | 108 | 1.08 x 10e2 |
| 10 | 750 | 7.50 x 10e2 |
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////