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PowerTimer

jfm92·powerTimer·powerTimerPCB/powerTimer.kicad_pcb

PowerTimer PCB layout, top view — open source board by jfm92
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About the PowerTimer PCB

PowerTimer is an open source PCB design by jfm92, published on GitHub. It is a 2-layer board measuring 35.4 × 25.6 mm, with 28 components from 14 distinct parts.

Other key parts include the RV-3028-C7 32.768KHZ 1PPM TA QC. By type, the board carries 12 resistors, 5 transistors, 3 diodes, 3 capacitors, 2 connectors and 1 IC.

It belongs with the power & battery and sensors designs in this gallery.

From the project

Module to jump from miliAmperes to nanoAmperes on Idle mode.

The Power Timer is an ultra-low power module that allows you to control the output power by software. It is mainly based on a Real-Time Clock (RTC) and an RS circuit. Thanks to the RTC, you can control the exact wake-up date or the periodicity. It also allows for external interruptions, which gives you the benefits of ultra-low power consumption while being able to connect other types of sensors. The module is based on the RV3028-C7 chip. It is also compatible with Arduino, thanks to its custom library.

PowerTimer, from the project README
From the project README

Main components on the PowerTimer

RV-3028-C7 32.768KHZ 1PPM TA QC

PowerTimer bill of materials (BOM)

28 components, 14 distinct parts.

QtyPartRefs
1
RV-3028-C7 32.768KHZ 1PPM TA QC
U1
3
AO3401A
Q1, Q4, Q5
2
S8050H
Q2, Q3
1
Conn_01x02
J1
1
Conn_01x06
J2
1
TS-1185EC-C-D-B
SW1
1
0805G (Green)
LED1
3
LL4148
D1, D2, D3
1
100nF
C1
1
10uF
C2
1
TAJA475K016RNJ
C3
7
10K
R1, R3, R5, R6, R10, R11, R14
4
100K
R2, R4, R7, R8
1
470
R9

PowerTimer design files

The KiCad project lives in the jfm92/powerTimer repository on GitHub; these links point at the commit this page was built from.

PowerTimer: common questions

How big is the PowerTimer PCB?

The PowerTimer measures 35.4 × 25.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PowerTimer?

28 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the PowerTimer design files?

From the jfm92/powerTimer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the PowerTimer design in my own project?

The repository has no license, so all rights stay with jfm92. Use it as a reference, and ask the author before reusing the design.

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