BowelProbe
About the BowelProbe PCB
BowelProbe is an open source AVR/Arduino PCB design by ashertok1, published on GitHub. It is a 4-layer board measuring 87.1 × 40.4 mm, with 98 components from 38 distinct parts.
Its main chip is the ATmega328P, from the AVR/Arduino family. Other key parts include the LM3480IM3-12/NOPB, TLV76050DBZR, LT8330, AD9833BRMZ and TL072ACDR. By type, the board carries 52 capacitors, 25 resistors, 12 ICs, 5 diodes, 2 inductors and 1 transistor.
Main components on the BowelProbe
BowelProbe bill of materials (BOM)
98 components, 38 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATmega328P Microchip Technology | ATmega328P | U1 |
| 1 | LM3480IM3-12/NOPB Texas Instruments | LM3480IM3-12_NOPB | U2 |
| 1 | TLV76050DBZR Texas Instruments | TLV76050DBZR | U3 |
| 1 | LT8330 Analog Devices Inc. | LT8330 | U4 |
| 1 | AD9833BRMZ Analog Devices Inc. | AD9833 | U5 |
| 2 | TL072ACDR Texas Instruments | TL072smd | U6, U8 |
| 1 | OPA2134UA/2K5 Texas Instruments | OPA2134smd | U7 |
| 1 | MCP6002T-E/MC Microchip Technology | MCP6002smd | U9 |
| 1 | LM319MX/NOPB Texas Instruments | LM319MX_NOPB | U10 |
| 1 | SN74LVC1G86DBVR Texas Instruments | SN74LVC1G86DBVR | U11 |
| 1 | Buffer Texas Instruments | Buffer | U12 |
| 1 | AO3407A Alpha & Omega Semicon | AO3407A | Q1 |
| 1 | TSX-3225 16.0000MF18X-AC3 EPSON | Crystal16MHz | XTAL1 |
| 1 | BZT52B12 LGE | BZT52B12 | D1 |
| 1 | SchottkyDiode DOWO | SchottkyReplacement | D2 |
| 1 | DiodeLowLeak Diodes Incorporated | DiodeLowLeak | D3 |
| 2 | DiodeClamper Toshiba Semiconductor and Storage | DiodeClamper | D4, D5 |
| 1 | 10u TDK | Inductor10uH | L1 |
| 1 | SRF0703-4R7M Bourns | Inductor4.7uReplacement | L2 |
| 4 | 1u KYOCERA AVX | Cap1uF | C1, C2, C16, C18 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 28 | 0.1u Murata Electronics | Cap0.1uF | C3, C5, C7, C8, C9, C10, C11, C12 +20 |
| 2 | 18p KEMET | Cap18pF | C4, C6 |
| 2 | 4.7u Murata Electronics | Cap4.7uF | C17, C20 |
| 1 | 4.7p Murata Electronics | Cap4.7pF | C19 |
| 13 | 10u Murata Electronics | Cap10uF | C21, C25, C26, C29, C32, C35, C36, C39 +5 |
| 1 | 2.2n YAGEO | Cap2.2nF | C30 |
| 1 | 1n KEMET | Cap1nF | C31 |
| 9 | 10k YAGEO | Resistor10k | R1, R2, R3, R4, R5, R10, R14, R22 +1 |
| 4 | 47 YAGEO | Resistor47 | R6, R7, R8, R9 |
| 1 | 100k YAGEO | Resistor100k | R11 |
| 1 | 71.5k YAGEO | Resistor71.5k | R12 |
| 1 | 1M YAGEO | Resistor1M | R13 |
| 2 | 6.8k YAGEO | Resistor6.8k | R15, R16 |
| 3 | 30k YAGEO | Resistor30k | R17, R24, R25 |
| 1 | 1.8k YAGEO | Resistor1.8k | R18 |
| 1 | 100 Vishay Dale | Resistor100 | R19 |
| 1 | 300k YAGEO | Resistor300k | R20 |
| 1 | 1k Vishay Dale | Resistor1k | R21 |
BowelProbe design files
The KiCad project lives in the ashertok1/BowelProbe repository on GitHub; these links point at the commit this page was built from.
- LayoutbowelProbe.kicad_pcb
- SchematicbowelProbe.kicad_sch
BowelProbe: common questions
What microcontroller does the BowelProbe use?
The BowelProbe is built around the ATmega328P, from the AVR/Arduino family.
How big is the BowelProbe PCB?
The BowelProbe measures 87.1 × 40.4 mm, has 4 copper layers and is 1.7 mm thick.
How many components are on the BowelProbe?
98 components, from 38 distinct parts. The full bill of materials is listed on this page.
Where can I download the BowelProbe design files?
From the ashertok1/BowelProbe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the BowelProbe design in my own project?
The repository has no license, so all rights stay with ashertok1. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the BowelProbe without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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