Nanoc6 mppt rs485 base d2
About the Nanoc6 mppt rs485 base d2 PCB
Nanoc6 mppt rs485 base d2 is an open source PCB design by chinawrj, published on GitHub under the MIT license. It is a 2-layer board measuring 62 × 28 mm, with 20 components from 12 distinct parts.
Other key parts include the THVD1406DR AUTO-DIR RS485 / C5215918 and XC6206P332MR-G 3V3 200mA / C5446. By type, the board carries 10 resistors, 4 capacitors, 2 ICs, 2 connectors, 1 fuse and 1 diode.
It belongs with the iot & wireless and power & battery designs in this gallery.
From the project
ESPHome and Home Assistant integration for Baijidian MPPT controllers over Modbus RTU/RS485
Rev D2 is the selected successor to Rev D. It keeps the compact, low-cost assembly strategy, but adopts the confirmed controller pinout: RJ12 Pin 1 and Pin 2 are both +5 V, Pin 5 is ground, Pin 4 is RS485-A and Pin 6 is RS485-B.
Rev D was the lower-cost design with consolidated passives and an SMD-only assembly option. Starting from D therefore preserves the approximately ¥300 first-article strategy better than returning to the more complex Rev C power section. D2 reduces the machine-placed SMD count from 33 to 18.
Main components on the Nanoc6 mppt rs485 base d2
Nanoc6 mppt rs485 base d2 bill of materials (BOM)
20 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | THVD1406DR AUTO-DIR RS485 / C5215918 | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | XC6206P332MR-G 3V3 200mA / C5446 | SOT-23 | U3 |
| 1 | KH-9801-6P6C / C2683355 | Kinghelm_KH-9801-6P6C | J1 |
| 1 | NANOC6 DIRECT DOCK PM200-1-04-W-4.3 / C2906053 | NanoC6_Dock_PM200-1-04-W-4.3 | J2 |
| 1 | 0.50A HOLD 33V PPTC / C70077 | Fuse_1206_3216Metric | F1 |
| 1 | SM712 RS485 TVS / C7420375 | SOT-23 | D3 |
| 1 | 10uF 50V X5R - 5V BULK / C13585 | C_1206_3216Metric | C1 |
| 2 | 10uF 50V X5R / C13585 | C_1206_3216Metric | C6, C7 |
| 1 | 100nF 50V X7R / C14663 | C_0603_1608Metric | C8 |
| 1 | 10k 1% TX IDLE HIGH / C25804 | R_0603_1608Metric | R6 |
| 8 | 10R 1% / C22859 | R_0603_1608Metric | R7, R8, R11, R12, R13, R14, R15, R16 |
| 1 | 120R 1% TERM / C22787 | R_0603_1608Metric | R9 |
Nanoc6 mppt rs485 base d2 design files
The KiCad project lives in the chinawrj/esphome-baijidian-mppt repository on GitHub; these links point at the commit this page was built from.
Nanoc6 mppt rs485 base d2: common questions
How big is the Nanoc6 mppt rs485 base d2 PCB?
The Nanoc6 mppt rs485 base d2 measures 62 × 28 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Nanoc6 mppt rs485 base d2?
20 components, from 12 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 Nanoc6 mppt rs485 base d2 design files?
From the chinawrj/esphome-baijidian-mppt 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 Nanoc6 mppt rs485 base d2 design in my own project?
Yes, under the terms of its MIT license, which chinawrj chose for the repository.
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