MightyOhm Geiger Counter solderpad
A Geiger counter that logs to a serial port
mightyohm.com/blog/products/geiger-counter/Description
A hackable ATtiny2313-based Geiger counter for educational purposes which logs data to a serial port.
Schematic
Board
Bill of Materials
| Designator | Value | Description |
|---|---|---|
| B1 | 2xAAA | |
| C1 | .01uF | CAPACITOR, American symbol |
| C2 | 220pF | CAPACITOR, American symbol |
| C3 | 1nF | CAPACITOR, American symbol |
| C4 | 0.1uF | CAPACITOR, American symbol |
| C5 | 100uF | POLARIZED CAPACITOR, American symbol |
| D1 | 1N4937 | DIODE |
| D2 | 1N914 | DIODE |
| H1 | MOUNT-PAD-ROUND3.0 | MOUNTING PAD, round |
| H2 | MOUNT-PAD-ROUND3.0 | MOUNTING PAD, round |
| H3 | MOUNT-PAD-ROUND3.0 | MOUNTING PAD, round |
| H4 | MOUNT-PAD-ROUND3.0 | MOUNTING PAD, round |
| J1 | ||
| J2 | ||
| J3 | ||
| J4 | ||
| J5 | ICSP | PIN HEADER |
| J6 | PULSE | PIN HEADER |
| J7 | SERIAL | PIN HEADER |
| L1 | 10mH | Inductor |
| LED1 | RED | MightyOhm Engineering |
| LOGO1 | OSHW_LOGO_FILLX0200-NT | |
| LS1 | ||
| Q1 | FJN3303F | NPN TRANSISTOR |
| Q2 | 2N3904 | NPN TRANSISTOR |
| Q3 | 2N3904 | NPN TRANSISTOR |
| R1 | 100K | RESISTOR, American symbol |
| R2 | 4.7M | RESISTOR, American symbol |
| R3 | 10K | RESISTOR, American symbol |
| R4 | 22K | RESISTOR, American symbol |
| R5 | 1K | RESISTOR, American symbol |
| R6 | 330 | RESISTOR, American symbol |
| R7 | 100K | RESISTOR, American symbol |
| R8 | 15 | RESISTOR, American symbol |
| R9 | 220K | RESISTOR, American symbol |
| R10 | 10K | RESISTOR, American symbol |
| R11 | 100 | RESISTOR, American symbol |
| S1 | POWER | |
| S2 | OMRON SWITCH | |
| TP1 | GM_PULSE | Test Point |
| TP2 | HV+ | Test Point |
| U1 | TLC555CP | TIMER |
| U2 | ATTINY2313 | Atmel Tiny2313 |
| VR1 | 10 | 3386 Series |
| X1 | 8MHz | Ceramic resonator 10.01 to 13.00 MHz |
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This project is © Jeff Keyzer / MightyOhm Engineering, and is published under the terms of the Creative Commons Attribution-ShareAlike 3.0 United States licence.