Sansnom
About the Sansnom PCB
Sansnom is an open source ESP32 PCB design by Christophe45, published on GitHub. It is a 2-layer board measuring 54.6 × 94 mm, with 26 components from 23 distinct parts.
Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the RFM95W-868S2, MCP1700-3302E_TO92, TP4056 and HX711. By type, the board carries 7 connectors, 7 resistors, 5 ICs, 4 capacitors, 2 switches and 1 transistor.
It belongs with the rf & radio and sensors designs in this gallery.
From the project
ESP32 Lorawan beehive connected
This project is to make a connected hive that can control the weight, the internal and external temperature of the hive as well as the humidity. Data recovery is done with a Lora RFM95 module and reception of this data through a gateway connected to TTN. The data received on TTN is then sent to Node-red and sent back to Blynk's servers.
New version on test with a GPS module NOE6NV2 and an accelerometer MPU6050 used for alarm detection when the hive is moved.
Main components on the Sansnom
Sansnom bill of materials (BOM)
26 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-WROOM-32 | ESP32-WROOM-32 | U1 |
| 1 | RFM95W-868S2 | HOPERF_RFM9XW_SMD | U2 |
| 1 | MCP1700-3302E_TO92 | TO-92_Inline | U3 |
| 1 | TP4056 | 4056E_LiIon_loader_SMT | U4 |
| 1 | HX711 | HX711 module | U5 |
| 1 | BC337 | TO-92_Inline | Q1 |
| 1 | Conn_Coaxial_Power | SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J1 |
| 1 | Prog | PinSocket_1x04_P2.54mm_Vertical | J2 |
| 1 | BME280 sensor | PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | solar connector | TerminalBlock_bornier-2_P5.08mm | J4 |
| 1 | Battery | TerminalBlock_bornier-2_P5.08mm | J5 |
| 1 | Load sensor 200kg | TerminalBlock_bornier-4_P5.08mm | J6 |
| 1 | DS18B20 | TerminalBlock_bornier-4_P5.08mm | J7 |
| 1 | RESET | SW_PUSH_6mm_H5mm | SW1 |
| 1 | PROG | SW_PUSH_6mm_H5mm | SW2 |
| 2 | 10µF | C_Elec_5x5.4 | C1, C2 |
| 1 | 100nF | C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C3 |
| 1 | 10uF | C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C4 |
| 3 | 10K | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R1, R3, R7 |
| 1 | 2,7K | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R2 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1M | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R4 |
| 1 | 3M | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R5 |
| 1 | 4.7K | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R6 |
Sansnom design files
The KiCad project lives in the Christophe45/ESP32-Lorawan repository on GitHub; these links point at the commit this page was built from.
Sansnom: common questions
What microcontroller does the Sansnom use?
The Sansnom is built around the ESP32-WROOM-32, from the ESP32 family.
How big is the Sansnom PCB?
The Sansnom measures 54.6 × 94 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Sansnom?
26 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the Sansnom design files?
From the Christophe45/ESP32-Lorawan repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Sansnom design in my own project?
The repository has no license, so all rights stay with Christophe45. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Sansnom 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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