ADCExpander
About the ADCExpander PCB
ADCExpander is an open source PCB design by comradef191, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 59.3 × 37.5 mm, with 60 components from 7 distinct parts.
Other key parts include the ADS1115IDGSR. By type, the board carries 20 capacitors, 18 connectors, 18 resistors and 4 ICs.
From the project
OSHW Thermistor expansion board for Klipper
- Can be stacked ontop of or underneith Nyoomies using appropiate spacers - OpenSource Hardware, licensed under the OHLv2-S - 10 thermistors wired directly to the STM32 - 16 additional thermistors wired up via 4 ADS1115 ICs - Powered directly from the USB port - Uses an ultra-low-noise TPS7A2033 300mA 3.3v voltage regulator to power all expansion headers and the ADS1115s - Features native support for the STM32F4x1 BlackPill, with the unused extra GPIO being broken out to a labelled expansion header alongside 3v3 & GND - Breaks out the I2C2 & I2C3 busses to a pair of dedicated 4-pin JST-XH…
Main components on the ADCExpander
ADCExpander bill of materials (BOM)
60 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | ADS1115IDGSR | VSSOP-10_3x3mm_P0.5mm | U4, U5, U6, U7 |
| 2 | Conn_01x04 | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1, J2 |
| 16 | 1x2-JSTXH | JST-XH_1x02-V ~ Custom | J3, J4, J5, J6, J7, J8, J9, J10 +8 |
| 4 | 1uF | C_0603_1608Metric | C4, C5, C7, C8 |
| 16 | 100nF | C_0603_1608Metric | C9, C10, C11, C12, C13, C14, C15, C16 +8 |
| 2 | 10kΩ | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 16 | 4.7kΩ | R_0603_1608Metric | R13, R14, R15, R16, R17, R18, R19, R20 +8 |
ADCExpander design files
The KiCad project lives in the comradef191/ThermEX repository on GitHub; these links point at the commit this page was built from.
ADCExpander: common questions
How big is the ADCExpander PCB?
The ADCExpander measures 59.3 × 37.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ADCExpander?
60 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the ADCExpander design files?
From the comradef191/ThermEX repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ADCExpander design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which comradef191 chose for the repository.
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