Sensorboard tester

jkominek·piano-conversion·hardware/sensorboard-tester/sensorboard-tester.kicad_pcb

Sensorboard tester PCB layout, top view — open source board by jkominek

About the Sensorboard tester PCB

Sensorboard tester is an open source PCB design by jkominek, published on GitHub under the Custom license license. It is a 2-layer board measuring 83.8 × 83.8 mm, with 33 components from 17 distinct parts.

Other key parts include the Opamp_Dual_Generic, AP2120N-3.3TRG1 and MCP1700T-2002E/TT. By type, the board carries 10 connectors, 9 test points, 5 capacitors, 3 ICs and 1 inductor.

It belongs with the audio and sensors designs in this gallery.

From the project

Hardware, and some firmware, for acoustic piano to MIDI controller conversion.

adc-board An STM32H743 reading 22 ADC channels and sending the results over RS485. led-power Provides power to 8 strings of 22 CNY70 IR LEDs. Needs +48V. Optional I2C control. led-test-bar For development only: little bar that holds a bunch of LEDs for testing the LED power board. link-adapter For development only: allows a PC to connect to an ADC or main board. main-board 8 ADC boards can plug in, their processed signals are managed by another STM32H743 and converted to MIDI in its various forms. Intended mainly for USB use, also has ethernet designed in. For all of the optional accessories…

Main components on the Sensorboard tester

Opamp_Dual_Generic AP2120N-3.3TRG1 MCP1700T-2002E/TT

Sensorboard tester bill of materials (BOM)

33 components, 17 distinct parts.

Qty	Part	Footprint	Refs
1	Opamp_Dual_Generic	DIP-8_W7.62mm_Socket	U1
1	AP2120N-3.3TRG1	SOT-23	U2
1	MCP1700T-2002E/TT	SOT-23	U3
1	Power	Pin_Header_Straight_1x02_Pitch2.54mm	J0
1	USB_B	USB_B	J1
1	LEDCurrentShunt	Pin_Header_Straight_1x02_Pitch2.54mm	J2
3	Sensor	Pin_Header_Straight_2x02_Pitch2.54mm	J3, J7, J11
1	StabilizingCap	Pin_Header_Straight_1x02_Pitch2.54mm	J5
2	PTCurrentShunt	Pin_Header_Straight_1x02_Pitch2.54mm	J6, J9
1	MirrorSensor	Pin_Header_Straight_2x02_Pitch2.54mm	J10
2	TestPoint_Probe	Pin_Header_Straight_1x01_Pitch2.54mm	RP1, RP2
3	R_POT	Potentiometer_WirePads_Small	RV1, RV2, RV3
9	TestPoint_Probe	Pin_Header_Straight_1x01_Pitch2.54mm	TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +1
1	Ferrite_Bead_Small	L_Axial_L5.3mm_D2.2mm_P2.54mm_Vertical_Vishay_IM-1	FB1
1	C_Small	CP_Radial_D10.0mm_P2.50mm	C1
2	10uF	CP_Radial_D5.0mm_P2.00mm	C2, C4
2	1uF	CP_Radial_D5.0mm_P2.00mm	C3, C5

Sensorboard tester design files

The KiCad project lives in the jkominek/piano-conversion repository on GitHub; these links point at the commit this page was built from.

Layouthardware/sensorboard-tester/sensorboard-tester.kicad_pcb

Sensorboard tester: common questions

How big is the Sensorboard tester PCB?

The Sensorboard tester measures 83.8 × 83.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sensorboard tester?

33 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sensorboard tester design files?

From the jkominek/piano-conversion repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Sensorboard tester design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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