Gloria is two boards. Valentino is the base board with the ESP32, radio and power;
Gloria is the shield that plugs on top through two 10-pin headers.
Valentino Build 3
Base board · full details
| MCU | ESP32 |
| Radio | LoRa 433 MHz (Ra-02) |
| RTC | PCF8563 (I²C 0x51) |
| Watchdog | TPL5010 hardware timer |
| Power | MPPT solar charger, LiFePO4 or lead-acid battery |
| Current sensing | INA219 on the solar input and the battery |
Gloria Shield
Pump control and sensor shield
| Relay | SRD-05VDC-SL-C, screw terminal J5, driven from GPIO17 |
| Emergency stop | Slide switch in series with the relay coil, state read by the ADC |
| Controls | START push button, AUTO / MANUAL slide switch |
| Sensors | 4 channels, each digital (level-shifted) or analog (ADS1115, 16-bit), 0–5 V |
| Display | 1.54″ OLED, SSD1309, 128×64, I²C |
| LEDs | 9× WS2812B on GPIO16 |
| Config | 5-way DIP switch on a resistor ladder (second ADS1115) |
| Power | TPS2051 load switch turns the shield's 5 V rail on and off (GPIO19) |
Power Rails
| Rail | Feeds |
|---|
| 5 V always on | Load switch input, emergency switch, relay coil |
| 5 V switched | LEDs, OLED, both ADS1115s, sensor pull-ups, sensor supply terminal J7 |
| 3.3 V | Level shifters and pull-ups on the ESP32 side |
The load switch is rated 500 mA continuous. Nine LEDs at full white would draw about 540 mA, so the
firmware caps LED brightness.
What Gloria shares with Daffodil
- The first two sensor channels pair the same GPIOs with the same ADC inputs as Daffodil, so Daffodil's sensor code carries over.
- The same 5-way DIP config switch circuit.
- The same kinds of sensor: flow meters, tank and trough level, DS18B20 temperature probe.
- New on Gloria: the pump relay with emergency stop, START and AUTO / MANUAL controls, an OLED, and two more sensor channels.
Four sensor channels on two 2-pin screw terminals, J3 and J6. Each terminal pin goes through two jumpers. The
digital jumper connects it to a level shifter (5 V sensor to 3.3 V ESP32 logic), for pulse sensors such as flow
meters or float switches. The analog jumper connects it to a 16-bit ADS1115 input, for 0–5 V sensors such
as tank and trough level. A separate terminal, J7, supplies the sensors with 5 V and ground, which suits flow
meters that need at least 4.5 V.
| Terminal | Digital jumper | GPIO | Analog jumper | ADS1115 (0x49) |
|---|
J3 pin 2 | JP5 | 33 | JP8 | AIN0 |
J3 pin 1 | JP6 | 18 | JP7 | AIN1 |
J6 pin 2 | JP1 | 32 | JP3 | AIN2 |
J6 pin 1 | JP2 | 23 | JP4 | AIN3 |
J7 | PWR Pin 1: switched 5 V · Pin 2: GND (sensor supply) |
J3 and J6 have no power pins; take sensor power from J7. The J3 channels match Daffodil (GPIO33 with AIN0,
GPIO18 with AIN1).
1-wire temperature probe
J6 pin 1 can also be a 1-wire bus for a DS18B20 probe: close JP2, leave
JP4 open, and take the probe's power and ground from J7. The pull-up is
already on the board. Not tested on hardware yet.
Typical site
- Flow meter on the pump outlet
- Tank level
- Water trough level
- Solar pump on the relay
Like Daffodil, Gloria has a 5-position DIP switch on a resistor ladder. Each combination
gives a different voltage, read by the shield's second ADS1115 (0x4A, AIN2), so the 5 switches give 32 positions.
The positions select what the unit measures and how it behaves.
Position table coming soon.
The ladder runs from 5 V on Gloria (3.3 V on Daffodil), so Daffodil's thresholds don't apply. The readings
for all 32 positions will be measured on the first boards, and the functions assigned in the firmware. The
table will be published here and in the manual.
OLED display
A 1.54″ monochrome OLED (SSD1309 driver, 128×64 pixels) on the I²C bus. The hardware test
firmware shows the relay state, AUTO / MANUAL mode, the START button, the emergency switch and the config
switch reading. The pages for the production firmware will be designed with it.
Status LEDs
Nine WS2812B RGB LEDs on one data line (GPIO16), powered from the switched 5 V rail. Brightness is capped
in firmware to keep the current well under the load switch's 500 mA rating. The LED display patterns will
be documented once the firmware is written.
Shield J1 mates with Valentino J3; shield J4 mates with
Valentino J4. All nine GPIOs available to a shield are used.
| Pin | J1 (Valentino J3) | J4 (Valentino J4) |
|---|
| 1 | GPIO32Sensor, J6 pin 2 | GPIO5AUTO / MANUAL switch |
| 2 | GPIO33Sensor, J3 pin 2 | GPIO18Sensor, J3 pin 1 |
| 3 | GPIO16LED data | GPIO23Sensor, J6 pin 1, or 1-wire |
| 4 | GPIO17Relay | GPIO195 V switch enable (low = on) |
| 5 | 3.3 V | SDA |
| 6 | GPIO27START button | SCL |
| 7 | NC | 3.3 V |
| 8 | NC | 5 V |
| 9 | GND | GND |
| 10 | GND | GND |
I²C Bus
| Address | Device |
|---|
0x18 | MCP9808 temperature (Valentino) |
0x3C | OLED (Gloria), expected; 0x3D on some modules |
0x40 | INA219 solar current (Valentino) |
0x41 | INA219 battery current (Valentino) |
0x48 | ADS1115 (Valentino) |
0x49 | ADS1115 sensors (Gloria) |
0x4A | ADS1115 config + emergency sense (Gloria) |
0x51 | PCF8563 RTC (Valentino) |
The Gloria devices are on the switched 5 V rail, so GPIO19 must be low before they answer.
Gloria — Schematic (preliminary)
Open PDF
