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Twomes p1-gateway hardware

energietransitie·twomes-p1-gateway-hardware·pcb/TwomesGateway.kicad_pcb

Twomes p1-gateway hardware PCB layout, top view — open source ESP32 board by energietransitie
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About the Twomes p1-gateway hardware PCB

Twomes p1-gateway hardware is an open source ESP32 PCB design by energietransitie, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 35.6 × 79 mm, with 33 components from 21 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the AP7365-33WG-7. By type, the board carries 9 resistors, 7 capacitors, 4 transistors, 4 connectors, 4 diodes and 3 switches.

It belongs with the test & measurement and iot & wireless designs in this gallery.

From the project

Open hardware design files for the Twomes P1 Gateway measurement device

This repository contains the open hardware design files for the Twomes P1 Gateway device, which can read measurement data from a smart meter adhering to the Dutch Smart Meter Requirements (DSMR). It can also receive data from various other Twomes 'satellite' measurement devices via the ESP-NOW protocol. The Twomes P1 Gateway can upload this measurement data to a Twomes server via Wi-Fi using secure HTTPS.

Twomes p1-gateway hardware, from the project README
From the project README

Main components on the Twomes p1-gateway hardware

AP7365-33WG-7ESP32-WROOM-32E

Twomes p1-gateway hardware bill of materials (BOM)

33 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AP7365-33WG-7
U1
1
ESP32-WROOM-32E
ESP32-WROOM-32D
U2
3
BC807
Q1, Q2, Q3
1
MMBT3904
Q4
1
FTDI header
J1
1
RJ12-6P6C
J2
1
C404968
USB_B_Micro
J3
1
Conn_01x06
J4
3
SW_Push
SW1, SW2, SW3
1
1N4148W
D1
1
SS14
D2
1
C84256
LED_RED
D3
1
C2297
LED_GREEN
D4
2
1UF
1uF
C1, C2
3
100NF
100nF
C3, C4, C5
1
1000UF
470uF
C6
1
10UF
10uF
C7
3
1k
R1, R7, R8
3
C22936
1R
R2, R3, R9
1
2.2K
2.2k
R4
Show 1 more
QtyPartRefs
2
10K
10k
R5, R6

Twomes p1-gateway hardware design files

The KiCad project lives in the energietransitie/twomes-p1-gateway-hardware repository on GitHub; these links point at the commit this page was built from.

Twomes p1-gateway hardware: common questions

What microcontroller does the Twomes p1-gateway hardware use?

The Twomes p1-gateway hardware is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the Twomes p1-gateway hardware PCB?

The Twomes p1-gateway hardware measures 35.6 × 79 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Twomes p1-gateway hardware?

33 components, from 21 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 Twomes p1-gateway hardware design files?

From the energietransitie/twomes-p1-gateway-hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Twomes p1-gateway hardware design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which energietransitie chose for the repository.

Can I test firmware for the Twomes p1-gateway hardware 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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