# The Green Dot 2040E5 Board ## Description The "Green Dot 2040E5" Board is a Node that interfaces RS485 Sensor probes and can log information to the cloud using LoRa Connectivity. It uses the XIAO RP2040 and the LoRa-E5 (STM32WLE5JC) modules from Seeed Studio to do its magic. It also has amazing power management capabilities (Solar charging, Battery protection, etc) that make it very useful for IoT applications #internetOfThings #smartHomeDevices #SeeedStudio #XIAO #LoRa #RP2040 #IoT ## Project Details - **Owner:** maj-6 - **Created:** 2/10/2026 - **Last Updated:** 2/10/2026 - **Visibility:** Public ## Key Components ### D6 — [LED_0603_1608Metric](https://www.flux.ai/adrian95/led06031608metric.md) - Role: Indicator - Package: LED_0603_1608Metric - Role Details: Status indicator LED - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### D7 — [LED_0603_1608Metric](https://www.flux.ai/adrian95/led06031608metric.md) - Role Details: Status indicator LED - License: https://creativecommons.org/licenses/by/4.0/ - Role: Indicator - Package: LED_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### IC4 — [TPS613221ADBVT](https://www.flux.ai/vasyl/tps613221adbvt.md) - Part Type: Integrated Circuit - Manufacturer Part Number: TPS613221ADBVT - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps61322.pdf?ts=1650970669085 - Manufacturer Name: Texas Instruments **Pins:** - GND [pin 3] - SW [pin 2] - VOUT [pin 1] ### J2 — [IPEX1](https://www.flux.ai/collinsemasi/ipex1.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - RF Series: IPEX - Manufacturer Part Number: BWU.FL-IPEX1 - Manufacturer Name: BAT WIRELESS - Impedance: 50Ω - Frequency Max: 6GHz - Number of Ports: 1 - Interface Length: 1.25mm - Interface Diameter: 2mm - Datasheet URL: https://datasheet.lcsc.com/lcsc/2208151830_BAT-WIRELESS-BWU-FL-IPEX1_C5137195.pdf **Pins:** - GND [pin 1] - GND [pin 3] - SIGNAL [pin 2] ### J4 — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector.md) - Manufacturer Name: JST Sales America - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Role Details: Battery input connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Role: Connector - Package: JST_PH_B2B **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J5 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal.md) - Role: Connector - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Package: Screw_Terminal_2pos - Role Details: Solar input connector - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### U10 — [LTC4412ES6#TRMPBF](https://www.flux.ai/adrian95/ltc4412es6trmpbf.md) - Manufacturer Part Number: LTC4412ES6#TRMPBF - Role: Power Path - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/4412fb.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Package: SOT-23-6 - Part Type: Integrated Circuit - Manufacturer Name: Analog Devices Inc. - Role Details: Ideal diode ORing controller feeding VSYS **Pins:** - CTL [pin 3] - GATE [pin 5] - GND [pin 2] - SENSE [pin 6] - STAT [pin 4] - VIN [pin 1] ### U11 — [TC2030](https://www.flux.ai/vasy_skral/tc2030.md) - Role: Debug - Package: TC2030 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Tag-connectors - Symbol Style: Parametric - Role Details: Tag-Connect 6-pad SWD header for SWDIO/SWCLK/NRST/SWO/3V3/GND - Datasheet URL: https://www.snapeda.com/parts/TC2050-IDC-NL/Tag-Connect%20LLC/datasheet/ - Manufacturer Name: Microchip Technology - Manufacturer Part Number: TC2030 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### U3 — [SY6280](https://www.flux.ai/collinsemasi/sy6280.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1808010233_Silergy-Corp-SY6280AAAC_C207620.pdf - Part Type: Integrated Circuit - Manufacturer Name: Silergy Corp - Package or Case Code: SOT-23-5 - Manufacturer Part Number: SY6280AAAC - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - EN [pin 4] - GND [pin 2] - ISET [pin 3] - VIN [pin 5] - VOUT [pin 1] ### U4 — [LoRa-E5 (STM32WLE5JC)](https://www.flux.ai/seeedstudio/wio-e5-stm32wle5jc.md) - Manufacturer Name: Seeed Technology Co., Ltd - Datasheet URL: https://files.seeedstudio.com/products/317990687/res/LoRa-E5%20module%20datasheet_V1.0.pdf - Part Type: RF Transceiver Module - Manufacturer Part Number: 317990687 **Pins:** - GND [pin 16] - GND [pin 14] - GND [pin 22] - GND [pin 2] - PA0 [pin 23] - PA10 [pin 27] - PA13 [pin 3] - PA14 [pin 4] - PA15 [pin 6] - PA2 [pin 19] - PA3 [pin 18] - PA9 [pin 21] - PB0 [pin 28] - PB10 [pin 20] - PB13 [pin 24] - PB14 [pin 26] - PB15 [pin 5] - PB3 [pin 8] - PB4 [pin 7] - PB5 [pin 11] - PB6 [pin 10] - PB7 [pin 9] - PB9 [pin 25] - PC0 [pin 13] - PC1 [pin 12] - RFIO [pin 15] - RST [pin 17] - VCC [pin 1] ### U9 — [MCP73123T-22SI/MF](https://www.flux.ai/vasy_skral/mcp73123t-22simf.md) - Manufacturer Name: Microchip Technology - Part Type: Integrated Circuit - Role Details: LiFePO4 single-cell charger; PROG resistor sets 50 mA charge current - Manufacturer Part Number: MCP73123T-22SI/MF - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/22191E.pdf - Package: DFN-10-EP - Role: Battery Charger **Pins:** - EXP [pin 11] - NC1 [pin 5] - NC2 [pin 6] - PROG [pin 10] - STAT [pin 7] - VBAT1 [pin 3] - VBAT2 [pin 4] - VDD1 [pin 1] - VDD2 [pin 2] - VSS1 [pin 8] - VSS2 [pin 9] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/maj-6/the-green-dot-2040e5-board](https://www.flux.ai/maj-6/the-green-dot-2040e5-board).* --- *Generated from [https://www.flux.ai/maj-6/the-green-dot-2040e5-board](https://www.flux.ai/maj-6/the-green-dot-2040e5-board)*