2 layers100 × 100 mm
RecurBOY
cyberboy666/recurBOY
a rpi0 video-instrument – created in collaboration with Guergana Tzatchkova
35 parts122GPL-3.0
2 layers38.1 × 109.2 mm
LesScope
ImoogDi/LesScope10Arduino based Dual Channel Scope for eurorack-modular synths
- Size
- 38.1 × 109.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 52
- Pads
- 178
- Tracks, vias
- 227, 33
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 17 Mar 2025
- Updated
- 22 Jul 2025
Overview
LesScope is an open-source printed circuit board by ImoogDi, from the ImoogDi/LesScope repository on GitHub. It is a 2-layer board of 38.1 × 109.2 mm with 56 parts on 52 nets, routed with 227 tracks and 33 vias.
It is built around the MCP6004-E/P and BAT46. Its parts include 21 resistors, 14 capacitors, 7 diodes, 6 connectors and 3 switches. It belongs with the audio and music and sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdLesScope
Arduino based Dual Channel Scope for eurorack-modular synths.
Table of Contents
Introduction [blocked]
This eurorack-modul is designed for modular-synthesizers as dual channel scope modul.
Only two active parts are required to sample the signal at the jack-inputs.
- Arduino Nano V3.x.
- Quad Op Amp MCP6004 rail-to-rail input/output.
The Arduino Nano samples the amplified signal on two 10-Bit A/D multiplexed inputs.
Sampled-data are then traced on the 1.3'' OLED display.
Dataentry and menu-selections are possible with that encoder Select.
AC/DC coupling is selectable for both channels on two switches.
Every channel has two jacks linked together for signal-input and routing to other inputs.
That signal on Channel1 is normalized to the Trigger input-jack.
With an additonal cable plugged into the Trigger jack a different trigger-signal can be used.
All parts are common available and DIY-friendly designed.
(Details see attached pictures)
-
Modul Frontpanel
-
Modul Backside
-
Modul Right side
-
Modul Left side
-
Dual Trace example
LesScope-Menu [blocked]
- Menu example
Technical data [blocked]
-
size:
height: 3VP (133,35mm)
width : 8HP ( 40,3mm)
depth : 35mm -
power:
+5Volt, 0 mA
+12Volt, 45mA
-12Volt, 0 mA -
display:
128x64 pixel 1.3inch OLED with SPI interface -
MCU:
Arduino Nano V3.x ATmega 328P -
Electrical features:
Rotary encoder with push-button.
Two separate channels with AC/DC-coupling.
Input Voltage 10Vp-p for both channels.
Menu selectable signal-amplification (1...4:Channel1; 1...2:Channel2).
Sampling-rate range: 50us...100msec on both channels.
Separate trigger-input (default linked to Channel1). -
Measurement-capabilities (only on Channel1):
Frequency-measurement range: ~10Hz...~6000Hz.
Tuning-check range: C0(16.35Hz)...C8(4186.01Hz).
There are fife 3.5mm jacks available with following functions.
| Jack-Name | Function | Comment |
|---|---|---|
| Channel1 (two jacks) | Signal input for Channel1 | the two jacks are linked together and this signal is normalized to Trigger input. |
| Channel2 (two jacks) | Signal input for Channel2 | the two jacks are linked together. |
| Trigger | Signal input for Trigger | this signal is normalized to Channel1. |
References [blocked]
License [blocked]
Hardware:cc by-nc-sa 4.0 (details)
Software:licensed under GPL-3.0 (details)
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | AudioJack2_SwitchT | Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J1, J2, J3, J4, J5 |
| 4 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C4, C5, C6, C14 |
| 4 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7, R8, R17, R18 |
| 4 | BAT46 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3, D6, D7 |
| 3 | 10nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C9, C12, C13 |
| 3 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R11, R13, R21 |
| 3 | 4,7K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R16, R20 |
| 3 | 47K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R14, R15 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R9, R10 |
| 2 | 1uF | Capacitor_THT:C_Rect_L7.2mm_W3.0mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C10, C11 |
| 2 | 2,2uF | Capacitor_THT:C_Rect_L7.2mm_W3.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C2 |
| 2 | 27nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C7, C8 |
| 2 | BAT46 | Diode_THT:D_DO-35_SOD27_P2.54mm_Vertical_KathodeUp | D4, D5 |
| 2 | SW_SPDT | PCM_4ms_Switch:Switch_Toggle_SPDT_Mini_SolderLug | SW2, SW3 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R1 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 1N5817 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | 2.7K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R12 |
| 1 | 22u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 27K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R19 |
| 1 | 4,99K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6 |
| 1 | 47K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R4 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | Conn_02x05_Odd_Even | PCM_4ms_Connector:Pins_2x05_2.54mm_TH_Europower | J6 |
| 1 | MCP6004 | Package_DIP:DIP-14_W7.62mm | U1 |
| 1 | OLED 1.3 128X64 SPI | Display:DisplayModule_DM_OLED13 | U2 |
| 1 | OSHW-Logo2_7.3x6mm_SilkScreen | Symbol:OSHW-Logo2_7.3x6mm_SilkScreen | REF_A |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | TestPoint | PCM_4ms_TestPoint:TestPoint_WireHole | TP1 |
Questions
How big is the LesScope PCB?
It measures 38.1 × 109.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LesScope use?
56 parts, built around the MCP6004-E/P and BAT46. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LesScope KiCad files?
From the ImoogDi/LesScope repository on GitHub, at the commit this page was made from: the board is hw/LesScope.kicad_pcb and its schematic hw/Backplane.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LesScope design in my own project?
Its repository states no licence, so its author keeps all rights: ask ImoogDi before reusing the design.
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