HardLabs

Thermal controller

hicancan·carbentra-smart-plug·electronics/rev_b/thermal/thermal_controller.kicad_pcb

Thermal controller PCB layout, top view — open source board by hicancan

About the Thermal controller PCB

Thermal controller is an open source PCB design by hicancan, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 45 × 35 mm, with 27 components from 13 distinct parts.

Other key parts include the SN74LVC1G17DBVR, TPS3808G30DBVR and SN74LVC1G74DCUR. By type, the board carries 10 resistors, 6 capacitors, 5 ICs, 3 transistors, 2 connectors and 1 switch.

It belongs with the sensors designs in this gallery.

From the project

CARBENTRA smart plug: AIoT edge device for campus energy orchestration

ROUTED DEVELOPMENT CANDIDATES / FABRICATION AND ENERGIZATION HOLD. The pin-connected circuit has separate 45 × 35 mm controller and 12 × 12 mm sensor-head PCBs, component footprints and a machine-readable manifest. These are digitally checked source boards, not a certified protective circuit or tested thermal assembly. EVT-A was not modified.

The circuit adds independent hardware permission in series with the 5 V relay coil supply. The existing MCU low-side relay driver still controls ordinary on/off operation, but cannot energize the coil while the thermal permission is cleared.

Main components on the Thermal controller

SN74LVC1G17DBVRTPS3808G30DBVRSN74LVC1G74DCUR

Thermal controller bill of materials (BOM)

27 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
SN74LVC1G17DBVR
U2, U5, U6
1
TPS3808G30DBVR
U3
1
SN74LVC1G74DCUR
U4
1
AO3401A
Q1
2
MMBT3904
Q2, Q3
1
MAIN 4-WIRE COIL INTERLOCK
J1
1
SENSOR HARNESS
J3
1
MANUAL REARM
SW1
6
100nF 16V X7R
C2, C3, C4, C5, C6, C7
5
100k 1%
R2, R3, R7, R11, R13
2
10k 1%
R4, R10
1
1k 1%
R5
2
47k 1%
R9, R12

Thermal controller design files

The KiCad project lives in the hicancan/carbentra-smart-plug repository on GitHub; these links point at the commit this page was built from.

Thermal controller: common questions

How big is the Thermal controller PCB?

The Thermal controller measures 45 × 35 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Thermal controller?

27 components, from 13 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 Thermal controller design files?

From the hicancan/carbentra-smart-plug repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Thermal controller design in my own project?

Yes, under the terms of its AGPL-3.0 license, which hicancan chose for the repository.

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