Phyto pulse
About the Phyto pulse PCB
Phyto pulse is an open source ESP32 PCB design by jayis1, published on GitHub. It is a 4-layer board measuring 80 × 50 mm, with 37 components from 34 distinct parts.
Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the STM32G474RET6, AD8331ARZ, LMG1210RVRT, LM5022MM and MD0100. By type, the board carries 13 ICs, 4 connectors, 4 capacitors, 3 switches, 2 diodes and 1 crystal.
It belongs with the iot & wireless, power & battery and displays & leds designs in this gallery.
From the project
Novel SoC device designs: blueprints, schematics, firmware, and docs — a new invention every 24h.
A pocket plant electrophysiology recorder that captures ultra-low-noise action potentials and slow-wave potentials from living plants using Ag/AgCl microelectrodes, a 24-bit delta-sigma ADC with chopper-stabilized INA, on-device spike detection & classification, an experiments library (Venus flytrap snap, Mimosa pudica, light/dark response, wounding response), OLED waveform display, SD logging, and BLE/Wi-Fi streaming — bringing $8k–$30k lab plant electrophysiology rigs down to ~$69 and coffee-mug size for plant neuroscience research, citizen science, and education.
Main components on the Phyto pulse
Phyto pulse bill of materials (BOM)
37 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G474RET6 STMicroelectronics | LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | ESP32-C3-MINI-1 Espressif | Molex_3-220 | U2 |
| 1 | AD8331ARZ ADS1256 Analog Devices | SSOP-28_5.3x10.2mm_P0.65mm | U3 |
| 1 | LMG1210RVRT INA333 Texas Instruments | MSOP-8_3x3mm_P0.65mm | U4 |
| 1 | LM5022MM OPA2333 Texas Instruments | SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | MD0100 74HC4051 Microchip | SOIC-16_3.9x9.9mm_P1.27mm | U6 |
| 1 | MAX17048G+T10 SSD1306_OLED Maxim/Analog | OLED_128x64_I2C | U7 |
| 1 | TP4056 BME280 NanJing Top Power | Bosch_BME280_LGA | U8 |
| 1 | TPS63020DSJR MCP73831 Texas Instruments | SOT-23-5 | U9 |
| 1 | SSD1306-128X64-SPI AP2112-3.3 Solomon SSD1306 | SOT-23-5 | U10 |
| 1 | TPS7A0233P | SOT-23-5 | U11 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U12 |
| 1 | PC817 | DIP-4_W7.62mm | U13 |
| 1 | ABM8-8.000MHZ 8MHz Abracon | Crystal_HC49-SMD | Y1 |
| 1 | BNC_E1 LEMO | BNC_Amphenol | J1 |
| 1 | 12401548E4022 BNC_E2 Amphenol | BNC_Amphenol | J2 |
| 1 | 502774-0891 MicroSD Molex | microSD | J3 |
| 1 | USB-C PIN-4 | USB_C_Receptacle | J4 |
| 1 | NCR18650B 1200mAh_LiPo Sanyo/Panasonic | BatteryHolder_JST_PH_2 | BAT1 |
| 2 | 1M | R_0805 | R_B1, R_B2 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100k | R_0805 | R_G0 |
| 3 | 10k | R_0805 | R_G1, R_S1, R_S2 |
| 1 | 1k | R_0805 | R_G2 |
| 1 | 100 | R_0805 | R_G3 |
| 1 | SKQGAFE010 BTN_RECORD ALPS | SW_PUSH_6mm | SW1 |
| 1 | SKQGAFE010 BTN_MODE ALPS | SW_PUSH_6mm | SW2 |
| 1 | SKQGAFE010 BTN_STIM ALPS | SW_PUSH_6mm | SW3 |
| 1 | APT2012SRCPRV WS2812B Kingbright | LED_WS2812B_PLCC4 | LED1 |
| 1 | BAT54S SMAJ3.3A Nexperia | D_SMA | D1 |
| 1 | SMAJ15A SMAJ3.3A Q | D_SMA | D2 |
| 1 | GRM188R71H104KA93 4.7uF Murata | C_0805 | C1 |
| 1 | GRM188R60J106ME47 100nF Murata | C_0805 | C2 |
| 1 | VJ0805Y473JXAAT 10uF Vishay | C_0805 | C3 |
| 1 | GRM188R71C105KA93 100nF Murata | C_0805 | C4 |
Phyto pulse design files
The KiCad project lives in the jayis1/SoC-Device-Inventions repository on GitHub; these links point at the commit this page was built from.
Phyto pulse: common questions
What microcontroller does the Phyto pulse use?
The Phyto pulse is built around the ESP32-C3-MINI-1, from the ESP32 family.
How big is the Phyto pulse PCB?
The Phyto pulse measures 80 × 50 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Phyto pulse?
37 components, from 34 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 Phyto pulse design files?
From the jayis1/SoC-Device-Inventions 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 Phyto pulse design in my own project?
The repository has no license, so all rights stay with jayis1. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Phyto pulse 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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