Dual Slope Generator
About the Dual Slope Generator PCB
Dual Slope Generator is an open source STM32 PCB design by JordanAceto, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 99.1 × 99.1 mm, with 163 components from 56 distinct parts.
Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the AMS1117-3.3, LM3900 and TL072. By type, the board carries 90 resistors, 22 capacitors, 16 diodes, 12 transistors, 6 ICs and 6 switches.
It belongs with the audio designs in this gallery.
From the project
modular analog synthesizer for a.p.
PCB with two Serge-stlye slope generators
Main components on the Dual Slope Generator
Dual Slope Generator bill of materials (BOM)
163 components, 56 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AMS1117-3.3 TL072 | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | STM32F405RGT6 TL072 | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 2 | LM3900 | SOIC-14_3.9x8.7mm_P1.27mm | U3, U6 |
| 2 | TL072 | SOIC-8_3.9x4.9mm_P1.27mm | U4, U5 |
| 6 | MMBT3906 | SOT-23_Handsoldering | Q1, Q2, Q4, Q7, Q8, Q10 |
| 6 | MMBT3904 | SOT-23_Handsoldering | Q3, Q5, Q6, Q9, Q11, Q12 |
| 1 | slope_1_port | PinHeader_1x07_P2.54mm_Vertical | J1 |
| 1 | slope_2_port | PinHeader_1x07_P2.54mm_Vertical | J2 |
| 1 | power_in | PinHeader_2x05_P2.54mm_Vertical | J3 |
| 6 | 100k | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2, RV3, RV5, RV6, RV7 |
| 2 | 100k | Potentiometer_Bourns_3296W_Vertical | RV4, RV8 |
| 2 | lin_expo_switch | SPDT_on_on | SW1, SW4 |
| 2 | auto_cycle_switch | SPDT_on_on | SW2, SW5 |
| 2 | rise-fall-both-switch | SPDT_on_on | SW3, SW6 |
| 1 | B5819W D | D_SOD-123 | D1 |
| 1 | C2286 D | D_SOD-123 | D2 |
| 1 | C72043 D | D_SOD-123 | D3 |
| 9 | D | D_SOD-123 | D4, D5, D7, D9, D10, D11, D12, D13 +1 |
| 2 | 5v6 | D_SOD-123 | D6, D14 |
| 2 | LED | LED_D5.0mm | D8, D16 |
Show 36 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10UF 1nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1 |
| 1 | 100NF 1nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2 |
| 1 | 100NF 47pF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3 |
| 1 | 10UF 47pF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4 |
| 1 | 10NF 22nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5 |
| 8 | 100NF 100nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6, C7, C9, C10, C11, C12, C13, C14 |
| 1 | 10UF 100nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8 |
| 1 | 2.2UF 100nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C15 |
| 1 | 2.2UF 10uF | CP_Radial_D6.3mm_P2.50mm | C16 |
| 1 | 12PF 10uF | CP_Radial_D6.3mm_P2.50mm | C17 |
| 1 | 12PF 1nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C18 |
| 1 | 1nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C19 |
| 2 | 47pF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C20, C21 |
| 1 | 22nF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C22 |
| 1 | 2K2 270k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 2 | 10K 100k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R4 |
| 1 | 2K2 100k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3 |
| 1 | 100 560k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5 |
| 21 | 100k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6, R7, R8, R9, R10, R15, R17, R28 +13 |
| 8 | 33k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11, R12, R13, R14, R56, R57, R58, R59 |
| 3 | 560k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16, R50, R61 |
| 6 | 82k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R18, R21, R29, R63, R66, R74 |
| 4 | 47k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19, R20, R64, R65 |
| 4 | 820k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R22, R24, R67, R69 |
| 8 | 220k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R23, R26, R27, R34, R68, R71, R72, R79 |
| 2 | 68k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R25, R70 |
| 6 | 2k2 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R31, R32, R41, R76, R77, R86 |
| 2 | 1k8 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R33, R78 |
| 4 | 10M | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R35, R38, R80, R83 |
| 2 | 8k2 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R36, R81 |
| 2 | 330k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R37, R82 |
| 4 | 1M | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R39, R40, R84, R85 |
| 4 | 1k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R42, R45, R87, R90 |
| 2 | 100 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R43, R88 |
| 2 | 150k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R44, R89 |
| 1 | 270k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R46 |
Dual Slope Generator design files
The KiCad project lives in the JordanAceto/angelo_modular repository on GitHub; these links point at the commit this page was built from.
Dual Slope Generator: common questions
What microcontroller does the Dual Slope Generator use?
The Dual Slope Generator is built around the STM32F405RGT6, from the STM32 family.
How big is the Dual Slope Generator PCB?
The Dual Slope Generator measures 99.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dual Slope Generator?
163 components, from 56 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Dual Slope Generator design files?
From the JordanAceto/angelo_modular repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Dual Slope Generator design in my own project?
Yes, under the terms of its CC-BY-4.0 license, which JordanAceto chose for the repository.
Can I test firmware for the Dual Slope Generator without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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