The Green Dot 2040E5 Board
Controls
Properties
Availability & Pricing
Distributor | Qty 1 | |
---|---|---|
Digi-Key | $15.88–$16.36 | |
LCSC | $11.54–$12.46 | |
Mouser | $15.58–$15.83 |
Assets
id=flux logo
id=image-removebg
Simulation
Table
Subsystem | Test Description | Expected Outcome | Equipment Needed |
---|---|---|---|
Power Supply | Measure the output voltage of U1 and U3 to ensure the correct operating voltages are being delivered. | U1: 3.3V, U3: Correct output voltage based on ISET pin. | DMM |
Solar Charging (U2) | Verify voltage at VSOLAR and VBAT during and after exposure to light. | Appropriate charging voltage at VBAT; VSOLAR indicates solar panel voltage. | DMM |
Battery Protection | Disconnect solar input and observe battery discharge through system use. | VBAT should not drop below critical level ensuring battery protection feature. | DMM |
LoRa Connectivity (U4) | Send a test message through the LoRa network. | Message successfully sent and received on a LoRa gateway or another board. | Oscilloscope, DMM |
RS485 Interface (IC2) | Connect known RS485 sensor, send data to and receive data from the sensor. | Successful bi-directional communication. | Oscilloscope, DMM |
RP2040 Functionality (U6) | Program a simple blink sketch that uses GPIOs to blink an LED (D2 or D5). | LED blinks according to the programmed sketch. | DMM, Visual Inspection |
I2C Interface | Connect an I2C sensor to U6 (SCL and SDA lines) and attempt to communicate with it. | Successful readout from the sensor. | Oscilloscope, DMM |
GPIO Functionality (General) | Write a test program that toggles each GPIO pin and use an oscilloscope to verify toggling. | All GPIO pins are toggled, observable as voltage changes. | Oscilloscope |
Antenna and RF Path (U4, J2) | Transmit a signal using LoRa module U4 and monitor signal strength and quality at J2. | Signal is strong and clear without significant noise or attenuation. | DMM, Oscilloscope |
Power Consumption | Measure current draw in various operation modes (idle, active LoRa transmission, RS485 communication). | Current draw must be within expected ranges for respective modes. | DMM |
Voltage Regulation (U1, U3, U2) | Verify all voltage regulators and their output voltages under load. | Output voltages are stable and within tolerance under varying loads. | DMM |
Designator | |
---|---|
Designator | Ruleset | |
---|---|---|
kerry
copilot
Table