In this video Mark shows you how you can build your own Audio Spectrum Analyzer using electronics and Lego Bricks.
Watch the Video:
Bonus Content:
- Download Code and Schematics!
- B.O.M with Reference Design
Bill of Material:
| Product Name | Manufacturer | Quantity | Buy Kit |
|---|---|---|---|
| ALPS ALPINE Rotary Potentiometer, 10 kohm, 1 Turns, Logarithmic, 50 mW, ± 20%, RK09K Series | RK09D1130C2P | 3 | Buy Now |
| MULTICOMP PRO SMD Chip Resistor, 180 ohm, ± 1%, 250 mW, 0805 [2012 Metric], Thick Film, High Power | 0805W8F1800T5E | 1 | Buy Now |
| MULTICOMP PRO SMD Chip Resistor, 2.7 kohm, ± 1%, 250 mW, 0805 [2012 Metric], Thick Film, High Power | 0805W8F2701T5E | 1 | Buy Now |
| MULTICOMP PRO SMD Chip Resistor, 5.6 kohm, ± 1%, 250 mW, 0805 [2012 Metric], Thick Film, High Power | 0805W8F5601T5E | 2 | Buy Now |
| MULTICOMP PRO Small Signal Diode, Single, 100 V, 150 mA, 2.5 V, 4 ns, 500 mA | LL4148 | 10 | Buy Now |
| TDK SMD Multilayer Ceramic Capacitor, 2.2 µF, 50 V, 0805 [2012 Metric], ± 10%, X7R, C Series | 0805F225M500NT | 2 | Buy Now |
| PANASONIC CAP, ALU ELEC, AEC-Q200, 470UF, RAD CAN | VZH471M1CTR-0810 | 4 | Buy Now |
| MULTICOMP PRO SMD Multilayer Ceramic Capacitor, 33 pF, 50 V, 0805 [2012 Metric], ± 5%, C0G / NP0, MC Series | CL21C330JBANNNC | 1 | Buy Now |
| OMRON SWITCH, SPNO, 0.05A, 24V, THT, 0.98N | TC-1102-C-J-B | 2 | Buy Now |
| STMICROELECTRONICS Fast / Ultrafast Diode, 200 V, 4 A, Single, 1.05 V, 30 ns, 70 A | ES5JB | 2 | Buy Now |
| MOLEX Wire-To-Board Connector, KK 5045 Series, Through Hole, Header, 2, 2.5 mm, Tin Plated Contacts RoHS Compliant: Yes | 22041021 | 1 | Buy Now |
| MOLEX Wire-To-Board Connector, Vertical, KK 5045 Series, Through Hole, Header, 3, 2.5 mm RoHS Compliant: Yes | 22041031 | 1 | Buy Now |
| MOLEX Wire-To-Board Connector, KK 5045 Series, Through Hole, Header, 4, 2.5 mm, Tin Plated Contacts RoHS Compliant: Yes | 22041041 | 1 | Buy Now |
| MULTICOMP PRO SMD Chip Resistor, 7.5 kohm, ± 0.1%, 100 mW, 0805 [2012 Metric], Thin Film, Precision | 0805W8F7501T5E | 1 | Buy Now |
| SUSUMU SMD Chip Resistor, 200 ohm, ± 0.1%, 100 mW, 0805 [2012 Metric], Thin Film, Precision | 0805W8F2000T5E | 1 | Buy Now |
| TEXAS INSTRUMENTS SWITCH, ANALOG 1-OHM SPDT, 5A3159 | TS5A3159DBVR | 1 | Buy Now |
| NEXPERIA ANALOGUE MUX/DEMUX, 16:1, 180R, TSSOP-24 | 74HC4067PW,118 | 1 | Buy Now |
| MULTICOMP PRO SMD Multilayer Ceramic Capacitor, 6800 pF, 50 V, 0805 [2012 Metric], ± 10%, X7R, MC Series | 0805B682K500NT | 2 | Buy Now |
| MULTICOMP PRO SMD Multilayer Ceramic Capacitor, MC Series, 0.033 F, 10%, X7R, 50 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805B333K500NT | 2 | Buy Now |
| PANASONIC CAP, 22UF, 25VDC, ALU ELEC, HYBRID, SMD ROHS COMPLIANT: YES | RVT1E220M0505 | 1 | Buy Now |
| VISHAY RESISTOR, RCS0805 100 390R ET1 E3 ROHS COMPLIANT: YES | RCS0805390RFKEA | 2 | Buy Now |
| MULTICOMP SMD Current Sense Resistors, MC Series, 24 kohm, 100 mW, - 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F2402T5E | 1 | Buy Now |
| MULTICOMP SMD Current Sense Resistors, MC Series, 33 kohm, 100 mW, - 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F3302T5E | 1 | Buy Now |
| MULTICOMP PRO SMD Current Sense Resistors, MC Series, 3.3 kohm, 100 mW, - 5%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F3301T5E | 2 | Buy Now |
| MULTICOMP PRO SMD Current Sense Resistors, MC Series, 560 ohm, 100 mW, - 5%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F5600T5E | 1 | Buy Now |
| BOURNS TRIMMER, 25 TURN 100K | 3296W-1-104 | 1 | Buy Now |
| BOURNS TRIMMER, 25 TURN 1M | 3296W-1-105 | 1 | Buy Now |
| BOURNS TRIMMER, 25 TURN 50K | 3296W-1-503 | 1 | Buy Now |
| STMICROELECTRONICS Operational Amplifier, Dual, 4 MHz, 2, 16 V/ s, 6V to 36V, SOIC, 8 RoHS Compliant: Yes | TL082CDR | 1 | Buy Now |
| VISHAY Zener Single Diode, 3 V, 500 mW, SOD-123, 2 Pins, 150 °C, Surface Mount | MMSZ4683 | 1 | Buy Now |
| VISHAY CAP, 0.068µF, 50V, 10%, X7R, 0805 | 0805B683K500NT | 4 | Buy Now |
| BOURNS Trimpot, Multi Turn, Cermet, Top Adjust, 200 kohm, Through Hole, 25 Turns | 3296W-1-204 | 1 | Buy Now |
| YAGEO SMD Multilayer Ceramic Capacitor, 0.1 µF, 50 V, 0805 [2012 Metric], ± 10%, X7R, CC Series | CC0805KRX7R9BB104 | 14 | Buy Now |
| C46,C49,C50,C51,C52,C53" | undefined | undefined | Buy Now |
| PHOENIX CONTACT Wire-To-Board Terminal Block, 5.08 mm, 2 Positions, 26 AWG, 14 AWG, 2.5 mm², Screw | 1715721 | 2 | Buy Now |
| PHOENIX CONTACT Wire-To-Board Terminal Block, 5.08 mm, 3 Positions, 26 AWG, 14 AWG, 2.5 mm², Screw | 1715734 | 1 | Buy Now |
| SAMSUNG ELECTRO-MECHANICS SMD Multilayer Ceramic Capacitor, 4.7 µF, 25 V, 0805 [2012 Metric], ± 10%, X5R, CL Series | CL21A475KAQNNNE | 10 | Buy Now |
| SAMSUNG ELECTRO-MECHANICS SMD Multilayer Ceramic Capacitor, 10000 pF, 50 V, 0805 [2012 Metric], ± 10%, X7R, CL Series | CL21B103KBANNNC | 2 | Buy Now |
| SAMSUNG ELECTRO-MECHANICS SMD Multilayer Ceramic Capacitor, 1 µF, 50 V, 0805 [2012 Metric], ± 10%, X7R, CL Series | CL21B105KBFNNNE | 4 | Buy Now |
| SAMSUNG ELECTRO-MECHANICS SMD Multilayer Ceramic Capacitor, 0.22 µF, 50 V, 0805 [2012 Metric], ± 10%, X7R, CL Series | CL21B224KBFNNNE | 1 | Buy Now |
| SAMSUNG ELECTRO-MECHANICS SMD Multilayer Ceramic Capacitor, 0.47 µF, 50 V, 0805 [2012 Metric], ± 10%, X7R, CL Series | CL21B474KBFNNNE | 4 | Buy Now |
| KEMET Multilayer Ceramic Capacitor, AEC-Q200 MLCC Series, 2200 pF, - 5%, C0G / NP0, 50 V RoHS Compliant: Yes | CL21C222JBFNNNE | 2 | Buy Now |
| MULTICOMP PRO SMD Chip Resistor, 10 kohm, ± 5%, 125 mW, 0805 [2012 Metric], Thick Film, Sulfur Resistant | 0805W8F1002T5E | 4 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 240 ohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F2400T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCMR Series, 2.4 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F2401T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 3 kohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F3001T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 30 kohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F3002T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCMR Series, 4.7 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F4701T5E | 10 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 510 ohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F5100T5E | 2 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 68 kohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F6802T5E | 2 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 47 kohm, 125 mW, 5%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F4702T5E | 4 | Buy Now |
| MULTICOMP PRO Surface Mount Chip Resistor, Ceramic, MCMR Series, 75 kohm, 125 mW, 1%, 150 V, 0805 [2012 Metric] RoHS Compliant: Yes | 0805W8F7502T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 220 ohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F2200T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 27 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F2702T5E | 2 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 470 ohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F4700T5E | 3 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 5.1 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F5101T5E | 2 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 56 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F5602T5E | 2 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 6.2 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F6201T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 62 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F6202T5E | 1 | Buy Now |
| MULTICOMP PRO Surface Mount Thick Film Resistor, MCSR 08 Series, 6.8 kohm, 125 mW, - 1%, 150 V RoHS Compliant: Yes | 0805W8F6801T5E | 2 | Buy Now |
| STMICROELECTRONICS Operational Amplifier, QUAD, 4 MHz, 4, 16 V/ s, 6V to 36V, SOIC, 14 RoHS Compliant: Yes | TL084CDR | 3 | Buy Now |
| MOLEX Pin Header, Wire-to-Board, 2.5 mm, 1 Rows, 7 Contacts, Through Hole Straight, KK 5045 Series | 22041071 | 2 | Buy Now |
Additional Parts:
| ESP32_DevKit_V1_DOIT |
| RegulatorLM1084S-5.0/TR |
| Fuse 5TR4A 250V |
| Lego bricks misc. See Lego BOM list |
| or order it here: https://www.tindie.com/products/markdonners/pcb-10-channel-analog-spectrum-analyzer/ |