Skip to main content

Things I Learned: The Pico-W Receives Wi-Fi More Reliably With Its Legs Pointed Up

 I don't use the nascent straight key mode of the Project TouCans 20 meter ham radio as much as I could because the onboard Pico-W that serves as the control center and keyer of the rig, historically, has had unreliable Wi-Fi performance. (Alas, I partially blame the Windows laptop that sends the straight key signals as well.) Sadly, this can result in the key being stuck down which requires me to lower the radio and reset the keyer.

While I've marveled at the fact that a laptop could be 20 feet from the Pico-W and have just adequate communications, and a signal level that showed as medium to weak. That's all, apparently, been fixed with a simple flip of the Pico-W. Literally.

The Pico-W had power supply connection issues when mounted in a plug board directly on the rig like so:


It's not too, too hard to see why. The battery leads are smallish, and were by no means a compression fit into the plugboard. I fussed fussed with this configuration, but to no avail. Also? This is the configuration that had weak Wi-Fi signal. Note that the legs are down, into the plugboard, pointed at the rig.

I finally switched back to a legs up Pico-W configuration yesterday. It's reminiscent of the early prototype picture shown below. (I think these are also the first labeled pictures of TouCan Wireless. I need to pick up my documentation game a bit.)



Pico-W taped to side of rig housd in pineapple can. The Pico-Ww is also taped to the relay used for keyer control
Pico-W with legs out of plugboard. The Pico-W is taped to the relay used for keyer control.
Pico-W and relay next to the original battery pack which used 2 AA batteries. All are taped to the side of the rigs battery case, a Progresso soup can.
Another view. This time, the Pico-W is obscured by the relay, but you get a better look at the original battery pack that held 2 AA batteries.

While cleaning a room, we found the supply of 3M double sided foam tape I forgot I owned! We'll be cleaning up the battery, relay, and Pico-W mounts later today. I'll keep you posted on the results! Maybe we'll even add a separate USB-C adapter supply for the Pico-W!

Comments

Popular posts from this blog

More Cowbell! Record Production using Google Forms and Charts

First, the what : This article shows how to embed a new Google Form into any web page. To demonstrate ths, a chart and form that allow blog readers to control the recording levels of each instrument in Blue Oyster Cult's "(Don't Fear) The Reaper" is used. HTML code from the Google version of the form included on this page is shown and the parts that need to be modified are highlighted. Next, the why : Google recently released an e-mail form feature that allows users of Google Documents to create an e-mail a form that automatically places each user's input into an associated spreadsheet. As it turns out, with a little bit of work, the forms that are created by Google Docs can be embedded into any web page. Now, The Goods: Click on the instrument you want turned up, click the submit button and then refresh the page. Through the magic of Google Forms as soon as you click on submit and refresh this web page, the data chart will update immediately. Turn up the:

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

Now available as a Kindle ebook for 99 cents ! Get a spiffy ebook, and fund more physics The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems , there seem to be fewer explanations of the procedure for deriving the conversion, so here goes! What do we actually want? To convert the Cartesian nabla to the nabla for another coordinate system, say… cylindrical coordinates. What we’ll need: 1. The Cartesian Nabla: 2. A set of equations relating the Cartesian coordinates to cylindrical coordinates: 3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system: How to do it: Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables. The chain

The Valentine's Day Magnetic Monopole

There's an assymetry to the form of the two Maxwell's equations shown in picture 1.  While the divergence of the electric field is proportional to the electric charge density at a given point, the divergence of the magnetic field is equal to zero.  This is typically explained in the following way.  While we know that electrons, the fundamental electric charge carriers exist, evidence seems to indicate that magnetic monopoles, the particles that would carry magnetic 'charge', either don't exist, or, the energies required to create them are so high that they are exceedingly rare.  That doesn't stop us from looking for them though! Keeping with the theme of Fairbank[1] and his academic progeny over the semester break, today's post is about the discovery of a magnetic monopole candidate event by one of the Fairbank's graduate students, Blas Cabrera[2].  Cabrera was utilizing a loop type of magnetic monopole detector.  Its operation is in concept very sim