Dropbot control board.
About the Dropbot control board.
Dropbot control board. is an open source NXP PCB design by sci-bots, published on GitHub under the Custom license license. It is a board measuring 115 × 92 mm, with 141 components from 65 distinct parts.
Its main chip is the Teensy_3.2, from the NXP family. Other key parts include the MAX1771, CAT5171, HV7802, DPST (2 Form A), 350V and NCP5304. By type, the board carries 56 resistors, 39 capacitors, 12 ICs, 11 connectors, 10 inductors and 5 diodes.
From the project
Control board for the DropBot v3 digital microfluidics platform
The control board is a component of the [DropBot system][dropbot] responsible for:
serial communication with the host computer (via USB) generation of the high-voltage driving signal (up to 140V @ < 10 kHz) impedance-measurement (for estimating drop position, velocity, etc.) control of other system hardware (e.g., switching boards)
For more information, please visit https://sci-bots.com
Main components on the Dropbot control board.
Dropbot control board. bill of materials (BOM)
141 components, 65 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Teensy_3.2 | Teensy-3.2 | U1 |
| 1 | MAX1771 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U2 |
| 1 | CAT5171 | SOT-23-8 | U3 |
| 1 | HV7802 | MSOP-8 | U4 |
| 4 | DPST (2 Form A), 350V | DIP-8_SMD | U5, U7, U8, U12 |
| 1 | NCP5304 | SOIC-8-N | U6 |
| 1 | 74AHC1G32 | SOT-353 | U9 |
| 1 | IS25LP064A-JBLE | SSO-8_5.2x5.2mm_Pitch1.27mm | U10 |
| 1 | MCP6022 | DIP-8_W7.62mm | U11 |
| 1 | STP33N65M2 | TO-220_Neutral123_Horizontal_LargePads | Q1 |
| 2 | IRF740BPBF | TO-220_Neutral123_Horizontal_LargePads | Q5, Q6 |
| 3 | CONN_01X01 | 1pin | P1, P2, P5 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03_Pitch2.54mm | P3 |
| 1 | CONN_01X02 | Pin_Header_Straight_1x02_Pitch2.54mm | P4 |
| 1 | USB_B | 1734346-1 | P6 |
| 1 | CONN_01X04 | Pin_Header_Straight_1x04 | P7 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03 | P8 |
| 1 | USB_A | AU-Y1006 | P9 |
| 1 | CONN_01X01 | Pin_Header_Straight_1x01_Pitch2.54mm | P10 |
| 1 | TFM-105-02-X-DH | TFM-105-02-X-DH | P11 |
Show 45 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PTC | Resistor_Vertical_RM5mm | F1 |
| 1 | PTC 15mA | R_1210 | F2 |
| 1 | PROG | PTS840_GK_SMTR_LFS | SW1 |
| 1 | +3.3V | LED_0805 | LED1 |
| 1 | +12V | LED_0805 | LED2 |
| 1 | 400V, 4A, <50ns | SMC_Standard | D1 |
| 2 | D | SMA_Standard | D2, D3 |
| 1 | BAV99 | SOT-23 | D4 |
| 1 | WE-TVS_824015 | wurth-WE-TVS_SOT23-6L | D5 |
| 8 | FERRITE | R_0805 | FB1, FB2, FB3, FB4, FB5, FB6, FB7, FB8 |
| 1 | 47uH,3.8A | SRR1210 | L1 |
| 1 | 90 Ohm@100MHz | wurth-WE-CNSW_0805 | L2 |
| 1 | 10uF | TantalC_SizeD_EIA-7343_Reflow | C1 |
| 14 | 0.1uF | C_0805 | C2, C3, C5, C8, C9, C17, C18, C22 +6 |
| 2 | 100n,500V | C_1210 | C4, C10 |
| 1 | 100uF | TantalC_SizeE_EIA-7360_Reflow | C6 |
| 1 | 3.3uF,400V | c_elec_10x10 | C7 |
| 2 | 1uF | C_0805 | C11, C15 |
| 1 | 10pF | C_0805 | C12 |
| 4 | 100pF | C_0805 | C13, C19, C20, C21 |
| 1 | 470pF | C_0805 | C14 |
| 1 | 0.15uF | C_0805 | C16 |
| 6 | 150pF | C_0805 | C23, C25, C28, C29, C30, C31 |
| 1 | 1000pF | C_0805 | C24 |
| 2 | 0.01uF | C_0805 | C27, C34 |
| 1 | 33uF | SM2917 | C32 |
| 1 | C | C_1206 | C35 |
| 1 | 1k | R_0805 | R1 |
| 5 | 2k | R_0805 | R2, R3, R4, R19, R20 |
| 1 | 30m | R_2512 | R5 |
| 3 | 2M | R_1206 | R6, R8, R22 |
| 1 | 9.1k | R_0805 | R7 |
| 1 | 20k | R_0805 | R9 |
| 8 | 5.1k | R_0805 | R10, R13, R31, R32, R34, R35, R36, R55 |
| 8 | 100 | R_0805 | R11, R12, R24, R28, R29, R30, R54, R56 |
| 1 | 1 | R_0805 | R14 |
| 2 | 51k | R_0805 | R15, R17 |
| 3 | 100k | R_0805 | R16, R27, R33 |
| 5 | 10 | R_0805 | R18, R21, R37, R38, R39 |
| 2 | 1Meg | R_0805 | R23, R53 |
| 1 | 10k | R_0805 | R25 |
| 1 | 2.2k | R_0805 | R26 |
| 6 | 150 | R_0805 | R40, R41, R48, R49, R50, R51 |
| 6 | 51 | R_0805 | R42, R43, R44, R45, R46, R47 |
| 1 | 0R | R_0805 | R52 |
Dropbot control board. design files
The KiCad project lives in the sci-bots/dropbot-control-board.kicad repository on GitHub; these links point at the commit this page was built from.
Dropbot control board.: common questions
What microcontroller does the Dropbot control board. use?
The Dropbot control board. is built around the Teensy_3.2, from the NXP family.
How big is the Dropbot control board.?
The Dropbot control board. measures 115 × 92 mm and is 1.6002 mm thick.
How many components are on the Dropbot control board.?
141 components, from 65 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 Dropbot control board. design files?
From the sci-bots/dropbot-control-board.kicad repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Dropbot control board. design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Dropbot control board. without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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