Tag Archives: Raspberry Pi

Experimenting with the Raspberry Pi500 on Battery Power

Two weeks of power (see writeup)

Did some testing with Winston KC9FVR’s Battery Box device running the Raspberry Pi500 and Monitor.

We maxed the RPi’s processes and ran up the power usage of the monitor/speakers to try for a worse case simulation, and found the unit had a theoretical 14.8 day capacity.  Better than two weeks with the RPi500 setup using everything we could coax it into consuming.

We might have got a bit more efficiency trying various combinations of USB power cables, rather than going through the AC outlet on the battery box.

I’m doing some calculating incorporating the KX3, as the radio draws 3/4 Amps RX to 2.1 Amps in TX flat out.  My best guess is the radio at full use plus the RPi500 setup would run off of KC9FVR’s battery box about 30 hours.

For a projected 8 hours max activation with everything running flat out, doing US Islands Activations or one of the [X]OTA events, a battery about 1/4 this size would work out.  Hmm…

73

Steve
K9ZW

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Raspberry Pi-500 and Monitor – Kept me Up Late fiddling!

RPi500 Kit and Monitor boxes

I had preordered the new Raspberry Pi500 “kit” and the matching Raspberry Pi Monitor from CanaKit back on December 12th, 2024.

https://k9zw.wordpress.com/2024/12/12/quiet-introduction-of-the-raspberry-pi500/

It just arrived, earlier than expected!

An absolutely sweet unit. Was a no-brainer to setup and get going.

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Quiet introduction of the Raspberry Pi500

Monday December 9th rather quietly the Raspberry Pi500 unit was announced:

Raspberry Pi 500 and Raspberry Pi Monitor on sale now

Raspberry Pi500 and Monitor (from their website)

I’ve always liked the Raspberry all-in-one format and have had an Raspberry Pi400 in the shack for evaluation.

Bang for the dollar and with an eye on aesthetics, the Pi500 is a winner out the gate.  Combined with the RPi-Monitor even more so.

The Pi500 features:

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Digital Interface for the KX3 – Digirig

Needed an excuse to try out a Digirig interface.

As a differentiating feature, Digirig only requires a single USB connection to the computer with all the digital goodness packed in a single small enclosure. The internals include a USB hub, audio codec, a fully featured serial CAT (Computer Aided Transceiver) interface, and potentially other modules such as GPS receiver for time synchronization.” from the Digirig website

Using it with my Elecraft KX3 seemed as good of an excuse as any.

Here is any example of a DigitRig in use with a KX3:

The unit and cables have been ordered, and my idea is to try things out with a Raspberry Pi SBC (single board computer).

The link for the device and cables is:  https://digirig.net/
This DigiRig/KX3 project will be stacked behind the PACTOR projects, so it might be a bit before updates.  Depends on how the PACTOR projects go, and my overall available time.

(I also ordered the cable set to hook to one of my cheapo HTs for VHF Digital at a later date.)

73

Steve
K9ZW

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Turing Pi – Lights On

Been working remote a couple days, being a bit under the weather. Over my working from home lunch hour, I finished assembly of the TuringPi Cluster.

Some pictures:

all assembled on the bench, will get an enclosure when they are ready

All parts in place! Yeah!!

Lots more —
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Turing Pi Physical Build

Today was a rainy Saturday, and I had been promising myself that I would start building the Raspberry Pi Turing Pi v2 Cluster when weather kept me inside.

There was another post explaining what this project is all about https://k9zw.wordpress.com/2023/03/29/k9zw-shack-computer-cluster-turing-pi-2/

For now I will let the pictures to the talking:

The components

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