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4 layers50.7 × 40 mmP1 wireless indicator, the printed circuit board in 3D

P1 wireless indicator

Manul-Electronics/sp1_reader

Standalone reader based on an ESP32 for P1 protocol

Size
50.7 × 40 mm
Copper layers
4
Thickness
1.6 mm
Parts
42
Nets
45
Pads
158
Tracks, vias
138, 19
Pours
7
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
20 Oct 2022
Updated
20 May 2024

Overview

P1 wireless indicator is an open-source printed circuit board by Manul-Electronics, from the Manul-Electronics/sp1_reader repository on GitHub. It is a 4-layer board of 50.7 × 40 mm with 42 parts on 45 nets, routed with 138 tracks and 19 vias.

It is built around the ESP32-C3-WROOM-02-N4, CRCW040210K0FKEDHP and CRCW0402220RFKEDC, with the RC0402JR-070RL, 0402ZD106MAT2A and 1N5819HW-7-F-01 among its other parts. Its parts include 16 resistors, 12 capacitors, 5 diodes, 4 ICs and 2 connectors. It belongs with the ESP32 and RISC-V boards of this library.

Main components

11

README

README.md

P1 Wireless Interface (P1WI)

Smart Meter serial to wireless interface (Wi-Fi).

Configuration

  1. Plug a USB-C cable in the USB-C port of the P1WI.
  2. Connect the other end of the cable to your PC.
  3. Start the P1WI Utility program and click on Start the configuration button. This action will start the configuration wizard.
  4. When prompted to do it, select the Wi-Fi network on which the P1WI should connect. If your Wi-Fi network does not pop in the list, please verify that it operates at 2.4GHz as 5.0GHz network are not supported by the ESP32 series.
  5. Once the Wi-Fi network is selected, enter you Wi-Fi password into the textbox. By default, the text is obscucated, click on Reveal passphrase to make it appear.
  6. Click on Next. The P1WI should now try to connect to your network. If connection is successfuly established, the program will allow you to go to the next step. In case of failure at this step, please double check your Wi-Fi password and check that P1WI is close enough of your Wi-Fi router (the network symbol should be as full as possible).
  7. The configuration is now completed and the P1WI Utility program should display the following message : Configuration completed successfuly. You can now disconnect the P1WI from your computer.
  8. After you unplugged it from your computer, take the RJ11 cable and connect it to the P1 Port of your Smart Energy Meter. To do this, lift up the green/yellow cover of your Smart Energy Meter and plug it in.
  9. Connect the other end of the cable to you P1WI. A red light should have been lightning up, indicating that the module is powered by the Smart Energy Meter, once connected onto your Wi-Fi, a green/yellow LED should also have been lightning up. If the connection failed, a second red LED will light up.
  10. If everything went well, you can now use your P1WI.

How to use it?

Parts

42
QtyValueFootprintReferences
610KResistor_SMD:R_0402_1005MetricR1, R4, R8, R9, R12, R16
5220RResistor_SMD:R_0402_1005MetricR3, R5, R10, R11, R15
4100nFCapacitor_SMD:C_0402_1005MetricC2, C8, C9, C12
20RResistor_SMD:R_0402_1005MetricR13, R14
210uFCapacitor_SMD:CP_Elec_6.3x5.7C4, C5
210uFCapacitor_SMD:C_0402_1005MetricC1, C3
2140357145100manul_tech:140357145100U1, U2
21N5819WDiode_SMD:D_SOD-123D2, D3
222uFCapacitor_SMD:C_1210_3225MetricC6, C7
25.1KResistor_SMD:R_0402_1005MetricR6, R7
2KSEM31JLFSmanul_tech:KSEM31JLFSSW1, SW2
2TBDCapacitor_SMD:C_0402_1005MetricC10, C11
1173950336manul_tech:SIP3_11.6x8.5mmU3
11MResistor_SMD:R_0402_1005MetricR17
11uHmanul_tech:7447730L1
1615006138421manul_tech:615006138421J1
1629722000214manul_tech:629722000214J2
182400102Package_TO_SOT_SMD:SOT-23-6D1
1ESP32-C3-WROOM-02-N4manul_tech:MODULE_ESP32-C3-WROOM-02-H4U4
1PWRLED_SMD:LED_0402_1005MetricD5
1WS2812C-2020manul_tech:LED_WS2812C-2020D4

Questions

How big is the P1 wireless indicator PCB?

It measures 50.7 × 40 mm and has 4 copper layers, 1.6 mm thick.

What parts does the P1 wireless indicator use?

42 parts, built around the ESP32-C3-WROOM-02-N4, CRCW040210K0FKEDHP, CRCW0402220RFKEDC and RC0402JR-070RL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the P1 wireless indicator KiCad files?

From the Manul-Electronics/sp1_reader repository on GitHub, at the commit this page was made from: the board is Hardware/p1_wireless_indicator.kicad_pcb and its schematic Hardware/cpu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the P1 wireless indicator design in my own project?

Its repository states no licence, so its author keeps all rights: ask Manul-Electronics before reusing the design.

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