Keithley 615 Interface Board
About the Keithley 615 Interface Board
Keithley 615 Interface Board is an open source STM32 PCB design by farlepet, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 86 mm, with 169 components from 58 distinct parts.
Its main chip is the STM32G0B1RET, from the STM32 family. Other key parts include the W5500, AP62250Z6, FT231XQ and MAX3232. By type, the board carries 91 resistors, 39 capacitors, 12 diodes, 8 connectors, 5 ICs and 4 transistors.
From the project
Drop-in replacements for the buffer/printer boards for the Keithley 615 Electrometer
Keithley 615 Electrometer Printer Board Recreation ==================================================
This repo contains modern reproductions of the buffer/printer PCBs (PC209, PC218) for the Keithley 615 electrometer.
- PC218 - Signal inverter/buffer board - Recreation of the origional PC218 schematic using modern SMD components is in the PC218 directory - A simplified version using more modern ICs can be found in the PC218v2 directory - PC209 - Signal inverter/buffer and trigger board - Simplified version of the origional board can be found in the PC209 directory - Same inverter/buffer…
Main components on the Keithley 615 Interface Board
Keithley 615 Interface Board bill of materials (BOM)
169 components, 58 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | W5500 | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | STM32G0B1RET | LQFP-64_10x10mm_P0.5mm | U2 |
| 1 | AP62250Z6 | SOT-563 | U3 |
| 1 | FT231XQ | QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U4 |
| 1 | MAX3232 | SOIC-16_3.9x9.9mm_P1.27mm | U5 |
| 3 | BC848W | SOT-323_SC-70 | Q1, Q2, Q3 |
| 1 | BC856W | SOT-323_SC-70 | Q4 |
| 1 | 25 MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 24 MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | 32.768 kHz | Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y3 |
| 1 | Keithley_50-Pin_Connector | NorComp_112-050-213R001 | J3 |
| 1 | SWD | PinHeader_2x05_P1.27mm_Vertical | J4 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P1.27mm_Vertical | J5 |
| 1 | UART | PinHeader_1x05_P1.27mm_Vertical | J6 |
| 1 | USB_B | CUI_UJ2-BH-W1-TH | J7 |
| 1 | RS232 | PinHeader_1x05_P1.27mm_Vertical | J8 |
| 1 | DB9_Female_MountingHoles | ASSMANN_A-DF_09_A_KG-T2S | J9 |
| 1 | RB1-125BAG1A | WIZNET_RB1-125BAG1A | P1 |
| 1 | PMODE0 | 0603_solder_jumper | JP1 |
| 1 | PMODE1 | 0603_solder_jumper | JP2 |
Show 38 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PMODE2 | 0603_solder_jumper | JP3 |
| 2 | PTS810 | SW_SPST_PTS810 | SW1, SW2 |
| 1 | Duplex | LED_0603_1608Metric | D1 |
| 1 | Speed | LED_0603_1608Metric | D2 |
| 7 | Red | LED_0603_1608Metric | D3, D4, D5, D6, D7, D8, D9 |
| 3 | PE1605M1Q | D_0402_1005Metric | D10, D11, D12 |
| 1 | 1k | L_0805_2012Metric | FB1 |
| 1 | 2.2 uH | L_Taiyo-Yuden_NR-50xx | L1 |
| 2 | 10uF | C_0805_2012Metric | C1, C4 |
| 5 | 10nF | C_0603_1608Metric | C2, C5, C8, C36, C37 |
| 2 | 4.7uF | C_0603_1608Metric | C3, C35 |
| 3 | 6.8nF | C_0603_1608Metric | C6, C7, C29 |
| 2 | 12pF | C_0603_1608Metric | C9, C10 |
| 1 | 4.7uF | CP_Elec_5x5.9 | C11 |
| 2 | 10 uF | C_0805_2012Metric | C12, C13 |
| 1 | 100 nF | C_0603_1608Metric | C14 |
| 2 | 22 uF | C_0805_2012Metric | C15, C16 |
| 1 | 1uF | C_0603_1608Metric | C17 |
| 14 | 100nF | C_0603_1608Metric | C18, C19, C20, C21, C22, C23, C24, C25 +6 |
| 2 | 22pF | C_0603_1608Metric | C30, C31 |
| 2 | 47pF | C_0603_1608Metric | C38, C39 |
| 1 | 12.4k | R_0603_1608Metric | R1 |
| 5 | 0R | R_0603_1608Metric | R2, R3, R5, R6, R7 |
| 1 | 1M | R_0603_1608Metric | R4 |
| 4 | 49R9 | R_0603_1608Metric | R8, R9, R82, R83 |
| 23 | 220k | R_0603_1608Metric | R10, R18, R20, R22, R25, R27, R30, R33 +15 |
| 23 | 56k | R_0603_1608Metric | R11, R19, R21, R23, R26, R28, R31, R34 +15 |
| 5 | 10k | R_0603_1608Metric | R12, R13, R14, R29, R79 |
| 4 | 330R | R_0603_1608Metric | R15, R17, R81, R84 |
| 1 | 1.6k | R_0603_1608Metric | R16 |
| 3 | 1k | R_0603_1608Metric | R24, R57, R76 |
| 1 | 31.6k | R_0603_1608Metric | R32 |
| 4 | 27 | R_0603_1608Metric | R37, R40, R64, R67 |
| 4 | 1.8k | R_0603_1608Metric | R51, R52, R53, R54 |
| 8 | 0 | R_0603_1608Metric | R70, R71, R77, R80, R86, R87, R90, R91 |
| 1 | 180k | R_0603_1608Metric | R78 |
| 1 | 10R | R_0603_1608Metric | R85 |
| 2 | 1.5k | R_0603_1608Metric | R88, R89 |
Keithley 615 Interface Board design files
The KiCad project lives in the farlepet/keithley-615-printer-boards repository on GitHub; these links point at the commit this page was built from.
Keithley 615 Interface Board: common questions
What microcontroller does the Keithley 615 Interface Board use?
The Keithley 615 Interface Board is built around the STM32G0B1RET, from the STM32 family.
How big is the Keithley 615 Interface Board?
The Keithley 615 Interface Board measures 100 × 86 mm, has 2 copper layers and is 1.64 mm thick.
How many components are on the Keithley 615 Interface Board?
169 components, from 58 distinct parts. The full bill of materials is listed on this page.
Where can I download the Keithley 615 Interface Board design files?
From the farlepet/keithley-615-printer-boards repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Keithley 615 Interface Board design in my own project?
Yes, under the terms of its MIT license, which farlepet chose for the repository.
Can I test firmware for the Keithley 615 Interface Board 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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