6 layers12.8 × 11.4 mm
Main PCB
Neurallabware/Airscope_toolbox
A 1-gram wireless mesoscope for cortex-wide, single-cell-resolution imaging during unrestricted behaviour
31 parts10
2 layers20.6 × 15.6 mm
Esp32-pico module
thingler/esp32-pico-module23Thingler ESP32-PICO Module
- Size
- 20.6 × 15.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 18
- Pads
- 97
- Tracks, vias
- 187, 15
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 Mar 2020
- Updated
- 23 Dec 2020
Overview
Esp32-pico module is an open-source printed circuit board by thingler, from the thingler/esp32-pico-module repository on GitHub. It is a 2-layer board of 20.6 × 15.6 mm with 9 parts on 18 nets, routed with 187 tracks and 15 vias.
It is built around the ESP32-PICO-V3-02. Its parts include 3 capacitors, 2 ICs, 2 connectors and 1 resistor. It belongs with the microcontroller boards boards and the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdThingler ESP32-PICO Module
Thingler ESP32-PICO Module is a small size ESP32 development board with a minimum of required external components (including antenna). It's in the size of 20.60 mm x 15.60 mm with 16 pins and can be placed on a breadboard for prototyping. The module can be powered and programmed with the Thingler ESP32 Programmer but can also be powered with a separate power supply for small-sized designs.
Thingler ESP32 Programmer schematics and PCB has been designed with KiCad.
Getting started
Requirements
-
KiCad for the schematics
Pin configuration
Due to the size of the module, only part of the pins from the ESP32 microcontroller is exposed. Many of the ESP32 features can be configured to any of the I/O pins but some considerations has been made during the design of the module. Sice the ADC2 is shared with the WIFI module, which has higher priority, reading operation of adc2_get_raw() will fail between esp_wifi_start() and esp_wifi_stop(). Hence, three ADC1 channels have been exposed from the module in order to read ADC conversions during WIFI operation. Pins for I2S and DAC has also been exposed from the module.
Thingler ESP32-PICO Module has the following pin configuration:
| Name | Microcontroller pin(s) | Type | Function |
|---|---|---|---|
| 3V3 | 1, 3, 4, 19, 37, 43, 46 | P | Analog power supply (2.3V ~ 3.6V) |
| GND | 49 | P | Analog power supply (ground) |
| IO0 | 23 | I/O | ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK |
| EN | 9 | I | High: On; enables the module, Low: Off; resets the module |
| RXD0 | 40 | I/O | GPIO3, U0RXD, CLK_OUT2 |
| TXD0 | 41 | I/O | GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2 |
| IO33 | 13 | I/O | 32K_XN (32.768 kHz crystal oscillator output), ADC1_CH5, TOUCH8, RTC_GPIO8 |
| IO32 | 12 | I/O | 32K_XP (32.768 kHz crystal oscillator input), ADC1_CH4, TOUCH9, RTC_GPIO9 |
| IO25 | 14 | I/O | GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0 |
| IO26 | 15 | I/O | GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1 |
| IO37 | 6 | I | GPIO37, ADC1_CH1, RTC_GPIO1 |
| IO20 | 27 | I/O | GPIO20 |
| IO10 | 29 | I/O | GPIO10, SD_DATA3, HS1_DATA3, U1TXD |
| IO7 | 32 | I/O | GPIO7, SD_DATA0, HS1_DATA0, U2RTS |
| IO8 | 33 | I/O | GPIO8, SD_DATA1, HS1_DATA1, U2CTS |
| IO5 | 34 | I/O | GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK |
Build
The PCB wihout components can be ordered from Aisler or the PCB can be ordered from any fabrication houses by providing the gerber files.
The following components has been used for the module:
| Ref | Qty | Manufacturer Part Number | Manufacturer | Description | Product Link |
|---|---|---|---|---|---|
| U1 | 1 | ESP32-PICO-V3 | Espressif Systems | RF System on a Chip - SoC SIP module ESP32 with 4MByte Flash, Dual Core MCU, Wi-Fi & Bluetooth Combo, LGA48-pin, 7*7mm | Mouser |
| J1, J2 | 2 | 10129378-908002BLF | Amphenol FCI | Headers & Wire Housings ECONOSTIK HEADER SR VT TH 1X8 | Mouser |
| AE1 | 1 | 2450AT14A0100T | Johanson Technology | Antennas SMALL AREA 2.4G ANT | Mouser |
| C1 | 1 | CGA4J1X7R0J106K125AC | TDK | 10 uF 10% 0805 6.3V | Mouser |
| C2, C4 | 2 | 885012207098 | Wurth Elektronik | 100 nF 10% 0805 50V | Mouser |
| R1 | 1 | CRCW080510K0FKEAC | Vishay / Dale | Thick Film Resistors - SMD 1/8Watt 10Kohms 1% Commercial Use | Mouser |
License
Released under GNU/GPL Version 3
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric | C2, C4 |
| 2 | Conn_01x08_Male | esp32-pico-module:PinHeader_1x08 | J1, J2 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | Antenna_Chip | esp32-pico-module:wifi antenna | AE1 |
| 1 | ESP32_PICO_V3 | esp32-pico-module:QFN-48 | U1 |
| 1 | Trace | esp32-pico-module:AntennaTrace | U2 |
Questions
How big is the Esp32-pico module PCB?
It measures 20.6 × 15.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esp32-pico module use?
9 parts, built around the ESP32-PICO-V3-02. 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 Esp32-pico module KiCad files?
From the thingler/esp32-pico-module repository on GitHub, at the commit this page was made from: the board is esp32-pico-module.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32-pico module design in my own project?
Its repository states no licence, so its author keeps all rights: ask thingler before reusing the design.
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