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STD Dirtfinger
Mode: Editors' pick
- 1
Update time：
2022-03-07 20:18:44
Creation time：
2016-06-09 18:23:03
Description
Basically, a clone of the Centech pinpointer, but reduced in size. I'm currently playing with the idea of a bigger PCB, to directly attach the wand, and board-mount 9v connectors. If I can figure it out, I'll encase the thing in polyester resin.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | Manufacturer Part |
|---|---|---|---|---|---|
| 1 | to switch & battery | PWR | HDR1X2 | 1 | wire hole |
| 2 | PWR LED | D1 | LED3MM | 1 | SLR-343VRT32 |
| 3 | 300 5% | R12 | RV-2.5 | 1 | CF1/4CT52R301J |
| 4 | 1N4001 | D2 | DIODE_DO-41_SOD81_VERTICAL_ANODEUP | 1 | 1N4001-G |
| 5 | 78L05 | U2 | TO92 | 1 | LM78L05ACZ |
| 6 | .1 uf,100v | C6 | ceramic capacitor | 1 | ECQ-E2104KF |
| 7 | 10uf | C5 | CP_4X7MM | 1 | EEA-GA1E100H |
| 8 | 220 5% | R14 | RV-2.5 | 1 | CF1/4CT52R221J |
| 9 | 75 5% | R13 | RV-2.5 | 1 | CF1/4CT52R750J |
| 10 | MOTOR10MM | M1 | HDR1X2 | 1 | 1201 |
| 11 | 47uf | C7 | CP_6.3X7MM | 1 | EEA-GA1C470B |
| 12 | to buzzer | BZ | HDR1X2 | 1 | wire hole |
| 13 | SW-SPDT | SW2 | HDR1X3 | 1 | wire hole |
| 14 | 2N7000 | Q4 | TO92-INLINE | 1 | 2N7000 |
| 15 | TL062 | U1 | DIP8 | 1 | TL062CP |
| 16 | .22uf | C4,C2,C3 | C1 | 3 | C315C224K1R5TA7303 |
| 17 | 10k 1% | R11,R10,R2 | RV-2.5 | 3 | MFR-25FRF52-10K |
| 18 | MPSA18 | Q2,Q1,Q3 | TO-92A | 3 | MPSA18 |
| 19 | 1k 1% | R5,R1,R8 | RV-2.5 | 3 | MFR-25FBF52-1K |
| 20 | .01uf 15% ceramic | C1 | ceramic capacitor | 1 | ECW-F6103HL |
| 21 | 3k 1% | R4 | RV-2.5 | 1 | MF1/4DC3001F |
| 22 | 15k 1% | R3 | RV-2.5 | 1 | MF1/4DC1502F |
| 23 | 100 1% | R6 | RV-2.5 | 1 | MFR-25FBF52-100R |
| 24 | 2.2k 1% | R9 | RV-2.5 | 1 | MFR-25FRF52-2K2 |
| 25 | 1k | VR1 | Bourns_3296 | 1 | PV36W102C01B00 |
| 26 | 500 | VR2 | HDR1X2 | 1 | 93R1A-R22-A08L |
| 27 | 100 | NTC | RV-2.5 | 1 | NTCLE100E3101JB0 |
| 28 | to TX | P3 | HDR1X2 | 1 | wire hole |
| 29 | to RX | P4 | HDR1X2 | 1 | wire hole |
| 30 | SIP2 | P5,P6 | HDR1X2 | 2 | wire hole |
| 31 | 1.8mh,2.5ohm | L1,TX | INDUCTOR-1206 | 2 | off-board |
| 32 | 15uh,.3ohm | L2,RX | INDUCTOR-1206 | 2 | off-board |
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