Upstairs, downstairs
May 4, 2016

It turns out that tinkering and development is hard when the signals to be measured are located far from my desk and electronics workbench. The meter cabinet is located downstairs next to the front door, while my lab / playground is three half flights up (we live in a split-level house).

While bringing a laptop down for software development and upload would be easy, taking the scope down there and leaving it all hooked up for days on end… not fun.

Fortunately, there are ways to improve on this. One is to create a path for accessing the console during development with Thorsten von Eicken’s ESP-Link. The other trick is to use the JEM prototype board interactively, to peek and poke at its input pins and try and debug as much as possible that way.

Which is exactly what I’ve been doing lately:

It doesn’t remove the need to move the unit occasionally - to make hardware changes to it for example - but it should go a long way to making remote development possible!

For comments, visit the forum.

Going 32-bit, at last
Apr 27, 2016

Given last week’s mishap, and the resulting damage to the main metering JeeNode, it’s time to start creating a new setup. While I’m at it, I’ll throw a few new measurements into the mix and will also try to improve on the robustness and autonomy of it all:

This is just a start, there are lots of different angles, each of them probably a project in itself. Here’s a mounting plate, as first step:

The first priority is to replace that broken JeeNode setup, so that the readout works again and can be saved at the central “hub”.

For comments, visit the forum.

Water damage
Apr 20, 2016

We recently had a small water leak in the kitchen - leading to a 3-hour server outage for JeeLabs. Very early in the morning, so very few people will have noticed it - other than an ever-vigilant fellow named Ard…

Some “interesting” things happened, so I thought it’d make a nice topic for this blog:

As always, the articles in this week’s series will be published on three successive days.

For comments, visit the forum.

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