makerPower Solar

by danjuliodesigns

An intelligent solar power system for the internet of things

View all updates Aug 23, 2019

New Feature

Based on some early feedback and supporter questions, I have added, and am testing, a new feature in the firmware to allow the user’s application to shut down power for a programmed amount of time to allow increased control over power management. For example, the ability to shut down the system at night or for a period between scheduled activities.

The new feature has been added to the watchdog control system as a special function. It consists of a new 16-bit register called WDPWROFF that specified the number of seconds (1-65535 - or up to about 18.2 hours) that power should be disabled if the watchdog system times out. To use the new feature, the user code simply writes the delay to WDPWROFF and then enables the watchdog timer (WDEN and WDCNT) and allows it to timeout. After the one minute Alert period, power will be disabled for the specified number of seconds. Setting WDPWROFF to 0 configures it with the default 10 second power-off delay for use with normal watchdog timeout functionality.

After testing I’ll update the documentation on github.

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Product Choices


makerPower Solar Board

One makerPower Solar Board. Comes with a spare fuse and a 6-pin header.


Wiring Kit

This wiring kit includes nine 20 cm female-female Dupont wires, two 20 cm battery wires, and a header to make the temperature sensor remote.


9 Ah Battery

From the Crowd Supply Basics project.

One 9 Ah battery.



I currently design embedded systems. In the past I designed ASICs for computer graphics systems and computer servers as well as ASIC verification software.

Dan Julio

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