Esptemp8c
About the Esptemp8c PCB
Esptemp8c is an open source ESP32 PCB design by gcormier, published on GitHub. It is a 2-layer board measuring 56.6 × 57.7 mm, with 38 components from 22 distinct parts.
Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the LMR54406DBVR. By type, the board carries 12 capacitors, 9 resistors, 6 connectors, 6 diodes, 2 ICs and 1 fuse.
It belongs with the iot & wireless and sensors designs in this gallery.
From the project
n-channel thermocouple logger using esphome
Open source, n-channel temperature logger using esphome for Dallas DS18B20 sensors. Powered by an ESP32-C3-MINI, it can be powered by USB-C or by 24VAC.
You will need to find out your sensor ID's as per the esphome documentation.
A self-resetting polyfuse is included to protect HVAC equipment if sourcing 24VAC from these units. The polyfuse does NOT apply to power from the USB-C port, as the device supplying power should have overcurrent protection per the USB standard.
Main components on the Esptemp8c
Esptemp8c bill of materials (BOM)
38 components, 22 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-C3-MINI-1 | ESP32-C3-MINI-1 | U1 |
| 1 | LMR54406DBVR | SOT-23-6 | U2 |
| 1 | T1 | PhoenixContact_MC_1,5_3-G-3.81_1x03_P3.81mm_Horizontal | J1 |
| 1 | T2 | PhoenixContact_MC_1,5_3-G-3.81_1x03_P3.81mm_Horizontal | J2 |
| 1 | 24VAC | PhoenixContact_MC_1,5_2-G-3.81_1x02_P3.81mm_Horizontal | J3 |
| 1 | T3 | PhoenixContact_MC_1,5_3-G-3.81_1x03_P3.81mm_Horizontal | J4 |
| 1 | USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J5 |
| 1 | T4 | PhoenixContact_MC_1,5_3-G-3.81_1x03_P3.81mm_Horizontal | J6 |
| 1 | 140mA hold / 340mA trip mSMD014 | Fuse_1812_4532Metric | F1 |
| 1 | RESET | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 5 | 1N5819WS | D_SOD-323 | D1, D2, D3, D4, D5 |
| 1 | PWR | LED_0805_2012Metric | D7 |
| 1 | SRN6045-150M or SWPA6045S150MT 15uH | L_Sunlord_SWPA6028S | L1 |
| 4 | 10u | C_0805_2012Metric | C1, C7, C11, C12 |
| 3 | 0.1u | C_0603_1608Metric | C2, C9, C10 |
| 4 | 10uF 50V | C_1206_3216Metric | C3, C4, C5, C6 |
| 1 | 4u7 | C_1206_3216Metric | C8 |
| 3 | 10k | R_0402_1005Metric | R1, R3, R4 |
| 3 | 5k1 | R_0402_1005Metric | R2, R5, R6 |
| 1 | 68k | R_0402_1005Metric | R7 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 22k | R_0402_1005Metric | R8 |
| 1 | 680 | R_0402_1005Metric | R9 |
Esptemp8c design files
The KiCad project lives in the gcormier/esptemp8c repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/esptemp8c.kicad_pcb
- Schematicpcb/esptemp8c.kicad_sch
Esptemp8c: common questions
What microcontroller does the Esptemp8c use?
The Esptemp8c is built around the ESP32-C3-MINI-1, from the ESP32 family.
How big is the Esptemp8c PCB?
The Esptemp8c measures 56.6 × 57.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Esptemp8c?
38 components, from 22 distinct parts. The full bill of materials is listed on this page.
Where can I download the Esptemp8c design files?
From the gcormier/esptemp8c repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Esptemp8c design in my own project?
The repository has no license, so all rights stay with gcormier. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Esptemp8c 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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