DropGen
About the DropGen PCB
DropGen is an open source PCB design by harrislab-brown, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 92.5 × 62.5 mm, with 17 components from 15 distinct parts.
Other key parts include the TPS5430DDAR. By type, the board carries 5 connectors, 5 capacitors, 3 resistors, 2 diodes, 1 IC and 1 inductor.
From the project
DropGen uses a fluid reservoir and a piezoelectric buzzer to precisely and repeatably dispense small droplets on demand. This new version of the Harris Lab DropGen is designed to be 3D printed using filament based FDM printers. Harris Lab has developed a custom printed circuit bo
DropGen uses a fluid reservoir and a piezoelectric buzzer to precisely and repeatably dispense small droplets on demand. This new version of the Harris Lab DropGen is designed to be 3D printed using filament based FDM printers. Harris Lab has developed a custom printed circuit board to make assembly and use of DropGen as easy as possible, including adding the ability to control the height of DropGen with a commonly available stepper motor driven linear actuator.
Main components on the DropGen
DropGen bill of materials (BOM)
17 components, 15 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS5430DDAR | TI_SO-PowerPAD-8_ThermalVias | U4 |
| 1 | JST_3_PIN JST_3_pin | 3_pin_jst | J1 |
| 1 | JST_4_PIN JST_4_pin | 4_pin_jst | J2 |
| 1 | C194407 Barrel_Jack_Switch | BarrelJack_GCT_DCJ200-10-A_Horizontal | J3 |
| 1 | C784935 Camera Terminal Block | terminal_block | J4 |
| 1 | C784935 Piezo | terminal_block | J5 |
| 1 | B340A_C3018525 | D_SMC | D1 |
| 1 | LED | LED_0603_1608Metric | D2 |
| 1 | 22UH 22uH | L_Vishay_IHLP-4040 | L1 |
| 1 | 100UF 100uF | C_Elec_6.3x7.7 | C1 |
| 1 | 220UF 220uF | CP_EIA-6032-15_Kemet-U | C2 |
| 1 | 10NF 10nF | C_0805_2012Metric | C3 |
| 2 | 4.7UF 4.7uF | C_1210_3225Metric | C4, C5 |
| 1 | C258091 10KΩ T | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1 |
| 2 | 3.24kΩ | R_0603_1608Metric | R2, R3 |
DropGen design files
The KiCad project lives in the harrislab-brown/DropGen repository on GitHub; these links point at the commit this page was built from.
DropGen: common questions
How big is the DropGen PCB?
The DropGen measures 92.5 × 62.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DropGen?
17 components, from 15 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 DropGen design files?
From the harrislab-brown/DropGen repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the DropGen design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which harrislab-brown chose for the repository.