HardLabs

Dew-Sensor

kuellenberg·Dew-Controller·Hardware/Dew-Sensor/Dew-Sensor.kicad_pcb

Dew-Sensor PCB layout, top view — open source board by kuellenberg

About the Dew-Sensor PCB

Dew-Sensor is an open source PCB design by kuellenberg, published on GitHub. It is a 2-layer board measuring 29 × 29 mm, with 17 components from 8 distinct parts.

Other key parts include the MCP1703A-3302_SOT23, MAX3232, PIC16(L)F15323_14DIP_SOIC_TSSOP and Si7006. By type, the board carries 9 capacitors, 4 ICs, 2 connectors and 2 resistors.

It belongs with the sensors, science & space and displays & leds designs in this gallery.

From the project

Dew heater controller for telescope dew heater straps

Microcontroller based project to control dew heater straps used on a telescope.

Since the controller has to be capable of measuring the current on each heater channel, the circuit comprises a TI INA180 high side current sense amplifier. To reduce cost and complexity, only a single amplifier is used and firmware measures the current of each channel sequentially. As for overcurrent and short circuit protection, an integrated solution is used. The Vishay SiP32419 is a load switch with programmable current limit up to 3.5A and eliminates the need for a conventional fuse (for which you'll never…

Dew-Sensor, from the project README
From the project README

Main components on the Dew-Sensor

MCP1703A-3302_SOT23MAX3232PIC16(L)F15323_14DIP_SOIC_TSSOPSi7006

Dew-Sensor bill of materials (BOM)

17 components, 8 distinct parts.

QtyPartRefs
1
MCP1703A-3302_SOT23
U1
1
MAX3232
U2
1
PIC16(L)F15323_14DIP_SOIC_TSSOP
U3
1
Si7006
U4
1
Conn_01x04
J1
1
Conn_01x05
J2
9
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +1
2
10k
R1, R2

Dew-Sensor design files

The KiCad project lives in the kuellenberg/Dew-Controller repository on GitHub; these links point at the commit this page was built from.

Dew-Sensor: common questions

How big is the Dew-Sensor PCB?

The Dew-Sensor measures 29 × 29 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Dew-Sensor?

17 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Dew-Sensor design files?

From the kuellenberg/Dew-Controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Dew-Sensor design in my own project?

The repository has no license, so all rights stay with kuellenberg. Use it as a reference, and ask the author before reusing the design.

More boards in Dew-Controller

Similar boards