Search found 4413 matches

by uze6666
Sat Nov 17, 2018 12:13 am
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

Oh yes, of course, the schematic...that would help! :) Here's the latest schematic, PCB & BOM. I'm starting to build the latest rev, so hopefully moving the esp12 away will do the job. *praying* Edit: Important, I just realized the BOM is not up to date, some parts are wrong so don't use right away,...
by uze6666
Fri Nov 16, 2018 9:25 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

CunningFellow wrote:
Sun Nov 11, 2018 9:55 am
good work.

The other thing you can do aside from moving the noise radiator (ESP8266) further away is to lower the susceptibility of the audio amp.
Any concrete suggestions for that?
by uze6666
Sat Nov 10, 2018 3:48 am
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

Update time: unsatisfied with the previous revision I worked on yet another one and I really hope it's good this time. I moved the esp8266 much farther away from the amp since as Cunningfellow mentioned it indeed caused interferences in the lm386 when close. This time, i planned a header to be able ...
by uze6666
Sat Oct 27, 2018 4:37 am
Forum: Hardware
Topic: Uzenet
Replies: 217
Views: 26739

Re: Uzenet

Yes Lee is right, software reset is *essential* in this case. :)
by uze6666
Sat Oct 27, 2018 4:28 am
Forum: Hardware
Topic: Uzenet default parameters
Replies: 5
Views: 521

Re: Uzenet default parameters

Really happy to hear this! :D It's essential to use the software reset because the esp8266 reset pin is only connected to the 644! So as a design rule, insure the CH_PD pin is low when not needing the module (ie nothing to do by default) and high when required, to help save battery life on the porta...
by uze6666
Sat Oct 27, 2018 4:14 am
Forum: Hardware
Topic: Official parts list
Replies: 77
Views: 33039

Re: Official parts list

Parts going out of service is a bitch and just a fact life you have no idea! Here's some replacements: CAP ELECT 10UF -- 493-12962-3-ND CAP CER .33UF -- 445-173379-1-ND IC REG POS 1A 5V -- 296-47192-ND LED 3MM SHORT LENS GREEN DIFF -- 67-1056-ND -- This one is in stock now Post some pics of you boar...
by uze6666
Fri Oct 26, 2018 11:13 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

start by putting an LC filter between the ESP VCC and the rest of the circuit to see if the noise is conducted that way. What values would you recommend? Edit: I made a small breakout board with a separate regulator and plenty of caps (100nf, 220uf, 10Uf) to no avail, I still get dips in the voltag...
by uze6666
Fri Oct 26, 2018 9:11 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

The noise might be intentionally radiated from the antenna and not GND related. Your input to the Audio section - which I assume is an LM386 - looks like signal goes through an RC filter then a pot. This is possibly going to be a fairly high impedance point for noise to get in. Try adding a short 1...
by uze6666
Thu Oct 25, 2018 1:58 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 154
Views: 22329

Re: The quest to a portable Uzebox - update!

Another quick update. I reassembled the board in the case hoping the static would be less noticeable but alas no. Seems even a bit worst. :( Not to my standard of quality I'd say the least. So I'll need to do some hacking and testing trying to externalize the esp8266 to a breakout add its own regula...
by uze6666
Thu Oct 25, 2018 12:35 am
Forum: Hardware
Topic: Uzenet default parameters
Replies: 5
Views: 521

Re: Uzenet default parameters

For me the biggest concern is that pressing the reset button on the Uzebox, does nothing to the current state of the WIFI module. So you might set the defaults with a dedicated ROM, but most applications will use and set (as they should) the current state (or '_CUR' commands) to suit their needs. R...