
Wifi geiger counter
atomicra1n/wifi-geiger-counter
A DIY Geiger counter PCB which can detect ionizing radiation and log readings over Wi-Fi. Built with an ESP32, and a HV multiplier circuit that steps up 3.7V to 400V for the GM tube.
A compact GPS tracker designed in KiCad, built around the ESP32-C3 microcontroller and u-blox MAX-M10S GNSS receiver.
Gps tracker is an open-source printed circuit board by joshitha-c, from the joshitha-c/gps-tracker repository on GitHub. It is a 2-layer board of 43.9 × 45.2 mm with 38 parts on 91 nets, routed with 607 tracks and 26 vias.
It is built around the ESP32-C3-MINI-1-N4, AP2112K-3.3 and MAX-M10S, with the MMBT3904 among its other parts. Its parts include 13 resistors, 8 capacitors, 5 ICs, 3 diodes and 3 switches. It belongs with the radio and wireless boards and the ESP32 and RISC-V boards of this library.
A compact GPS tracker designed in KiCad, built around the ESP32-C3 microcontroller and u-blox MAX-M10S GNSS receiver. The board is powered by a rechargeable Li-ion battery, supports USB Type-C charging, and includes status LEDs and a buzzer for user feedback.
The project is suitable for learning embedded systems, GPS applications, and IoT-based tracking devices.
| Component | Description |
|---|---|
| ESP32-C3-MINI-1 | Main Microcontroller |
| MAX-M10S | GPS/GNSS Receiver |
| CP2102N | USB to UART Bridge |
| MCP73831 | Li-ion Battery Charger |
| USB-C Connector | Programming & Charging |
| Piezo Buzzer | Audio Notification |
| LEDs | Status Indicators |
pcb
schematic
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C7, C8 |
| 4 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R6, R11, R12, R13 |
| 3 | 330Ω | Resistor_SMD:R_0603_1608Metric | R3, R5, R7 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D3 |
| 3 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Qe1, Qe2, Qe3 |
| 2 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 5.1kΩ | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_EVQP7C | SW2, SW3 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 1kΩ | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 2kΩ | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U3 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J2 |
| 1 | ESP32-C3-MINI-1-N4 | EasyEDA:WIFIM-SMD_ESP32-C3-MINI-1 | U5 |
| 1 | MAX-M10S | RF_GPS:ublox_MAX | U4 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | SW_SPST | Button_Switch_SMD:SW_SPST_EVPBF | SW1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
It measures 43.9 × 45.2 mm and has 2 copper layers, 1.6 mm thick.
38 parts, built around the ESP32-C3-MINI-1-N4, AP2112K-3.3, MAX-M10S and MMBT3904. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the joshitha-c/gps-tracker repository on GitHub, at the commit this page was made from: the board is gps tracker.kicad_pcb and its schematic gps tracker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask joshitha-c before reusing the design.

atomicra1n/wifi-geiger-counter
A DIY Geiger counter PCB which can detect ionizing radiation and log readings over Wi-Fi. Built with an ESP32, and a HV multiplier circuit that steps up 3.7V to 400V for the GM tube.


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