Lora pager
About the Lora pager PCB
Lora pager is an open source ESP32 PCB design by alx-alexpark, published on GitHub. It is a 2-layer board measuring 85 × 66 mm, with 69 components from 38 distinct parts.
Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the TPS61230ARNSR, LTC4412xS6, TP4056-42-ESOP8, HS96L03W2C03 and ME6211C33M5. By type, the board carries 18 resistors, 13 capacitors, 11 diodes, 9 ICs, 8 switches and 2 transistors.
It belongs with the rf & radio designs in this gallery.
Main components on the Lora pager
Lora pager bill of materials (BOM)
69 components, 38 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS61230ARNSR | VQFN-7_L2.1-W2.1-P0.50-BL | U1 |
| 1 | LTC4412xS6 | TSOT-23-6 | U2 |
| 1 | TP4056-42-ESOP8 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U3 |
| 1 | HS96L03W2C03 | OLED-TH_L27.8-W27.2-P2.54_C9900033791 | U4 |
| 1 | ME6211C33M5 | SOT-23-5 | U5 |
| 1 | INA3221 | Texas_RGV0016A_VQFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U6 |
| 1 | E22-900M30S | WIRELM-SMD_E22-900M30S | U7 |
| 1 | ESP32-S3-MINI-1 | ESP32-S2-MINI-1 | U8 |
| 1 | MAX98357A | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U9 |
| 2 | AOD403 | TO-252-2 | Q1, Q2 |
| 1 | USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
| 1 | Conn_01x05_Socket | PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | li-ion | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | BT1 |
| 1 | li-ion | BATTERY-SMD_18650-1S-L77.1-W20.7-1 | BT2 |
| 1 | 4A/8A | Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 1 | 1A/1.8A | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F2 |
| 1 | Speaker | BUZ-SMD_4P-L13.0-W13.0-P11.4-BL | LS1 |
| 1 | SS-12D10L5 | SW-TH_SS-12D10L5 | SW1 |
| 7 | TS-1089S-02526 | SW-SMD_4P-L4.2-W3.3-P2.15-LS5.1 | SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 1 | Green | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Red | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 8 | D_TVS | D_SOD-923 | D3, D4, D5, D6, D7, D9, D10, D11 |
| 1 | Green | LED_0603_1608Metric | D8 |
| 1 | 1uH | WE-MAPI_4020 | L1 |
| 3 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C5, C8 |
| 1 | 10nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2 |
| 3 | 1uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C3, C9, C12 |
| 1 | 10pF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4 |
| 3 | 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7, C10 |
| 2 | 100nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C11, C13 |
| 3 | 1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R3, R16 |
| 8 | 10k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R4, R9, R10, R11, R12, R13, R14 |
| 1 | 316k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5 |
| 1 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 2.2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 470k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | 1M | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R15 |
| 2 | 5.1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17, R18 |
Lora pager design files
The KiCad project lives in the alx-alexpark/lora-pager repository on GitHub; these links point at the commit this page was built from.
- Layoutlora_pager.kicad_pcb
- Schematiclora_pager.kicad_sch
Lora pager: common questions
What microcontroller does the Lora pager use?
The Lora pager is built around the ESP32-S3-MINI-1, from the ESP32 family.
How big is the Lora pager PCB?
The Lora pager measures 85 × 66 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Lora pager?
69 components, from 38 distinct parts. The full bill of materials is listed on this page.
Where can I download the Lora pager design files?
From the alx-alexpark/lora-pager repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Lora pager design in my own project?
The repository has no license, so all rights stay with alx-alexpark. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Lora pager 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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