ESP32-hema console
rapha-tech·ESP32-hema-console·PCB files/hema_console.kicad_pcb
About the ESP32-hema console PCB
ESP32-hema console is an open source ESP32 PCB design by rapha-tech, published on GitHub. It is a 2-layer board measuring 33 × 50 mm, with 59 components from 34 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the 74LVC1G17, NS4168, AP2112K-3.3, TP4054 and SN74LVC1G80DCKR. By type, the board carries 18 resistors, 15 capacitors, 10 switches, 6 ICs, 4 diodes and 2 transistors.
From the project
New PCB for the small console from hema to use an ESP32
Known problems : - The buttons doesn't make great contact compared to the original PCB
Components : - ESP32 module without PCB antenna - 1.54 inches IPS 240240px - about 33030mm battery or 415*30mm
Note : it is almost the same schematic as my Retro-Ruler ##

Main components on the ESP32-hema console
ESP32-hema console bill of materials (BOM)
59 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LVC1G17 | SOT-353_SC-70-5 | U2 |
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U3 |
| 1 | NS4168 | HSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.3x2.3mm | U4 |
| 1 | AP2112K-3.3 | SOT-23-5 | U5 |
| 1 | TP4054 | SOT-23-5 | U6 |
| 1 | SN74LVC1G80DCKR | SOT-353_SC-70-5 | U7 |
| 1 | NPN_S9013 | SOT-23 | Q1 |
| 1 | CJ3139K | SOT-723 | Q2 |
| 1 | USB_C_RECEPTACLE_USB2.0_14P USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | Micro_SD_Card | micro_sd | J2 |
| 1 | BATTERY_3.7V battery_3.7v | BAT | B1 |
| 1 | ST7789 | ST7789-320x240 | DS1 |
| 1 | Speaker | BAT | S1 |
| 1 | LEFT | Membrane Button Hema Console | SW1 |
| 1 | START | Membrane Button Hema Console | SW2 |
| 1 | B | Membrane Button Hema Console | SW3 |
| 1 | DOWN | Membrane Button Hema Console | SW4 |
| 1 | UP | Membrane Button Hema Console | SW5 |
| 1 | RIGHT | Membrane Button Hema Console | SW6 |
| 1 | ON/OFF | Membrane Button Hema Console | SW7 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MENU | Membrane Button Hema Console | SW8 |
| 1 | A | Membrane Button Hema Console | SW10 |
| 1 | RLED | LED_0603_1608Metric | D1 |
| 2 | LESD5D5.0CT1G | D_SOD-523 | D2, D4 |
| 1 | BAT760 | D_SOD-323_HandSoldering | D5 |
| 2 | 10UF 10uF | C_0805_2012Metric | C1, C8 |
| 6 | 100NF 100nF | C_0603_1608Metric | C2, C5, C6, C7, C13, C15 |
| 2 | 2.2UF 2.2uF | C_0603_1608Metric | C3, C14 |
| 5 | 1UF 1uF | C_0603_1608Metric | C4, C9, C10, C11, C12 |
| 12 | 10K | R_0603_1608Metric | R1, R2, R5, R6, R8, R9, R10, R13 +4 |
| 1 | 10R | R_0603_1608Metric | R3 |
| 2 | 1K | R_0603_1608Metric | R4, R7 |
| 1 | 4K7 | R_0603_1608Metric | R11 |
| 2 | 5K1 | R_0603_1608Metric | R15, R16 |
ESP32-hema console design files
The KiCad project lives in the rapha-tech/ESP32-hema-console repository on GitHub; these links point at the commit this page was built from.
ESP32-hema console: common questions
What microcontroller does the ESP32-hema console use?
The ESP32-hema console is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the ESP32-hema console PCB?
The ESP32-hema console measures 33 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ESP32-hema console?
59 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 ESP32-hema console design files?
From the rapha-tech/ESP32-hema-console 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 ESP32-hema console design in my own project?
The repository has no license, so all rights stay with rapha-tech. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ESP32-hema console 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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