Node RS485
About the Node RS485 PCB
Node RS485 is an open source ESP32 PCB design by maivananh111, published on GitHub. It is a 2-layer board measuring 83.7 × 53.7 mm, with 116 components from 62 distinct parts.
Its main chip is the ESP32-C3, from the ESP32 family. Other key parts include the RAK3172, SP3485EN, BQ24075RGT, XL1509-5.0 and TPS63000. By type, the board carries 43 resistors, 33 capacitors, 8 ICs, 7 transistors, 7 diodes and 5 connectors.
It belongs with the iot & wireless and sensors designs in this gallery.
From the project
LoRaWAN wireless sensor network
Main components on the Node RS485
Node RS485 bill of materials (BOM)
116 components, 62 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RAK3172 | RAK3172 | U1 |
| 1 | SP3485EN MAX3485EN | SOIC-8 | U2 |
| 1 | BQ24075RGT | VQFN-16_3x3_PAD-VIAS | U3 |
| 1 | XL1509-5.0 | SOIC-8 | U4 |
| 1 | TPS63000 | DRC-0010J | U5 |
| 1 | ESP32-C3 | QFN-32_5x5_PAD-VIAS | U9 |
| 1 | USBLC6-2SC6 | SOT23-6 | U10 |
| 1 | MT3608 | SOT23-6 | U11 |
| 2 | SI2300 | SOT23-3 | Q1, Q4 |
| 2 | SI2301 | SOT23-3 | Q2, Q5 |
| 1 | APM4015P | TO-252-2 | Q3 |
| 1 | SI2300 | SOT23-3 | Q6 |
| 1 | SI2301 | SOT23-3 | Q7 |
| 1 | 40MHZ 40MHz | Crystal_3225_4P_1-4 | Y1 |
| 1 | RAK_DEBUG | PinHeader_2x04_P2.54mm_Vertical | J1 |
| 1 | CONN_RS485 | PhoenixContact_MC_1,5_4-G-3.81_1x04_P3.81mm_Horizontal | J2 |
| 1 | CONN_PWRIN | PhoenixContact_MC_1,5_2-G-3.81_1x02_P3.81mm_Horizontal | J3 |
| 1 | CONN_ESP_PROG | XH_6P_2.54mm_Vertical | J4 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P | USB-C_SMD_1 | J5 |
| 1 | 2.4GHZ 2.4GHz | Texas_SWRA117D_2.4GHz_Right | AE1 |
Show 42 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BATTERY_18650 Battery_18650 | XH_2P_2.54mm_Vertical | BT1 |
| 2 | Fuse | F_1812 | F1, F2 |
| 1 | RAK-RESET | Switch_Tactile_6x6_Horizontal | SW1 |
| 1 | ESP-RESET | SW_SPST_CK | SW2 |
| 1 | ESP-BOOT | SW_SPST_CK | SW3 |
| 1 | MODE_SEL_BTN | Switch_Tactile_6x6_Horizontal | SW4 |
| 3 | SMAJ5.0CA | D_SMA_TVS | D1, D2, D3 |
| 1 | Z12V | D_MiniMELF | D4 |
| 2 | SS34 | D_SMA | D5, D7 |
| 1 | LED_Dual_AKAK | LED_HOUSING_LH32K051F | D6 |
| 1 | 68UH 68uH | L_12x12mm_H8mm | L1 |
| 1 | 2.2UH 2.2uH | L_Bourns_SRN6045TA | L2 |
| 1 | 2.2NH 2.2nH | L_0603 | L4 |
| 1 | 22UH 22uH | L_Bourns_SRN6045TA | L5 |
| 11 | 100NF 100nF | C_0603 | C1, C3, C4, C11, C16, C20, C21, C22 +3 |
| 9 | 1UF 1uF | C_0603 | C2, C5, C8, C9, C15, C30, C31, C32 +1 |
| 1 | 470UF/50V 470uF/50V | CP_Elec_8x10.5 | C6 |
| 1 | 100UF 100uF | C_Elec_6.3x7.7 | C7 |
| 6 | 10UF 10uF | C_0603 | C10, C12, C13, C14, C34, C35 |
| 1 | 1uF | C_0603 | C17 |
| 2 | DNP | C_0603 | C24, C25 |
| 2 | 10PF 10pF | C_0603 | C26, C27 |
| 8 | 10R | R_0603 | R1, R4, R5, R6, R7, R30, R35, R38 |
| 2 | 10K 100K | R_0603 | R2, R36 |
| 7 | 10K 20K | R_0603 | R3, R22, R25, R26, R27, R31, R37 |
| 1 | 4K7 10R | R_0603 | R8 |
| 2 | 4K7 | R_0603 | R9, R10 |
| 1 | 120R | R_0603 | R11 |
| 3 | 1K | R_0603 | R12, R21, R32 |
| 1 | 10K | R_0603 | R13 |
| 2 | 1K2 | R_0603 | R14, R15 |
| 1 | 100R | R_0603 | R16 |
| 2 | 560K | R_0603 | R17, R19 |
| 2 | 100K | R_0603 | R18, R20 |
| 1 | 100R 4K7 | R_0603 | R23 |
| 2 | 0R | R_0603 | R24, R33 |
| 2 | 5K1 | R_0603 | R28, R29 |
| 2 | 10R | R_0603 | R34, R43 |
| 1 | 51K 33K | R_0603 | R39 |
| 1 | 2K7 | R_0603 | R40 |
| 1 | 100K | R_0603 | R41 |
| 1 | 20K | R_0603 | R42 |
Node RS485 design files
The KiCad project lives in the maivananh111/DoAnTotNghiep repository on GitHub; these links point at the commit this page was built from.
Node RS485: common questions
What microcontroller does the Node RS485 use?
The Node RS485 is built around the ESP32-C3, from the ESP32 family.
How big is the Node RS485 PCB?
The Node RS485 measures 83.7 × 53.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Node RS485?
116 components, from 62 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Node RS485 design files?
From the maivananh111/DoAnTotNghiep repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Node RS485 design in my own project?
The repository has no license, so all rights stay with maivananh111. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Node RS485 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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