Otto's DIY Cookbook - Simple VCO (8HP)

This kit includes all the parts needed to build a voltage controlled oscillator module, based on the written document named Otto's DIY Cookbook. The document is available for download in .pdf at the "download" section or from our GitHub.

The parts supplied with this kit are through-hole.

This is not a straight forward pick and place type of build. In the Otto's DIY ecosystem, you don't have the comfort of manufactured printed circuit boards. This is "hardcore" DIY ;).

This kit features the Protoboard-480 panels, which is suitable for narrow, high density build. If you prefer more space for mods and component layout, check out the 16 HP variant.

Parts included:

• 3pcs - Protoboard-480
• 1pcs - PowerBrick + Hardware
• 1pck - BOM
• Documents (List of Parts, Schematic)

Bill of Materials:

Part	Code	Value	Pcs
Potentiometer	P0915N-FC15BR10K	10kΩ	4
TS Socket	PJ398SM (Thonkiconn)		6
LED	LL-309VUGM2E-V11A-2B	Bi-Color	2
TACT Switch	TACTM-619P-F		4
Resistor		470Ω	5
Resistor		10kΩ	10
Resistor		51kΩ	10
Resistor		100kΩ	10
Operation Amplifier	LM224N		6
Transistor	BC549B		4
Transistor	2N7000		4
Capacitor		2.2nF	4
Capacitor		22nF	4
Diode	1N4004		4

All of these parts are common in electronics, for replacement try your local shop.

Specifications of the Protoboard-480:

• 8 HP eurorack compatible
• 12x40 prototyping-area
• Protoboard-style layout
• Double sided plated through-hole connections
• Easy to solder square pads
• Optional case grounding/shielding
• 10 easy-access ground connections
• Break-away tabs for stackable designs

Specifications of the PowerBrick:

• Supply noise filtering
• Short-circuit protection
• Over-voltage clamping
• Current limiting
• Status indicator LED
• 10 & 16 pin busboard connection

Every PowerBrick unit comes with a Hardware package. This includes 10 mm standoffs, M2 bolts, nuts and a 16pin IDC busboard cable to power your module.