VADC-visualized adc
About the VADC-visualized adc PCB
VADC-visualized adc is an open source PCB design by baldengineer, published on GitHub under the MIT license. It is a 4-layer board measuring 32.9 × 50.2 mm, with 28 components from 14 distinct parts.
Other key parts include the 74HCT595 and 74HC245. By type, the board carries 9 resistors, 7 diodes, 6 capacitors, 2 ICs, 2 connectors and 1 transistor.
From the project
Building an SAR ADC from scratch. Circuit schematics, PCB design, KiCad files, and Arduino code.
The shift register and buffer control the relay and six LEDs individually. The relay controls the 2R resistor.
The idea is to daisy chain these together. (So far, only tested with 4 bits.)
Board was fabricated with OSH Park's 4 layer service. The fiberglass material helps the reverse-mount LEDs glow.
Main components on the VADC-visualized adc
VADC-visualized adc bill of materials (BOM)
28 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HCT595 | SO-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | 74HC245 | SOIC-20W_7.5x12.8mm_P1.27mm | U2 |
| 1 | pmv50epear | SOT-23 | Q1 |
| 1 | Out | PinHeader_2x04_P2.54mm_Vertical | J1 |
| 1 | In | PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | DIPxx-1Cxx-51x | Relay_SPDT_HsinDa_Y14 | K1 |
| 1 | 1n4001 | D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 6 | LED_Small | LED_1206_3216Metric_ReverseMount_Hole1.8x2.4mm | D2, D3, D4, D5, D6, D7 |
| 2 | 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 4 | 22uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C6 |
| 1 | R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 2R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 6 | 330 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5, R6, R7, R8, R9 |
VADC-visualized adc design files
The KiCad project lives in the baldengineer/VADC-visualized-adc repository on GitHub; these links point at the commit this page was built from.
VADC-visualized adc: common questions
How big is the VADC-visualized adc PCB?
The VADC-visualized adc measures 32.9 × 50.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the VADC-visualized adc?
28 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the VADC-visualized adc design files?
From the baldengineer/VADC-visualized-adc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the VADC-visualized adc design in my own project?
Yes, under the terms of its MIT license, which baldengineer chose for the repository.