Hello, We have designed a custom PCB based around the P1, and we notice the P1 is slower (many times significantly slower) than a Photon in acquiring and connecting to the same Wifi network. Is this difference to be expected? Side by side comparison video of P1 on custom PCB vs. Photon on breadbo…

It looks like @peekay123 tried to answer this, but in the wrong thread: [image] Multiple photon inter communication General @htferreira , some obvious questions: Which version of firmware are you running? Are the Photon and P1 running the same user code? Was the PCB desi…

OMG! It’s a good thing there are smarter people than me in the Community! :flushed:

The things I would investigate would be: Antenna (have a tried a known-good antenna with a u.fl connector?) Power supply (using a scope to look at ripple, voltage, current spikes, etc.)

Hi, Interference with other hardware is most likely the cause. I noticed the same when I connected a Sparkfun sound detector to the Photon. It even didn’t connect to the WiFi anymore or took a long time. The sound detector contains an opamp which picked up the WiFi signal and multiplied it causing…

Thank you lloydo, peekay123, bko, and lucb. In answer: Firmware: 0.4.7 User Code: same for Photon and P1 (with exception of P1 spare pins used on P1) Question: if in SYSTEM_MODE(AUTOMATIC), does user code run prior to WiFi acquisition? PCB Design: no copper under P1 recommended keep out zone: […

Generally you should have no traces above this either - the antenna needs separation from conductive things otherwise it will couple and that’ll reduce performance. I can see you have a trace on the top and possibly a bit of a web connecting two fills on the bottom too. If you have ground fills top…

Yes, a power trace runs above the P1. 3.3V Power routing is on top layer with 15.7 mil trace width, 3.3V net running from 3.3V regulator output to C21 and C24 then to remainder of P1 VCC pins. Bottom layer is ground plane. Bypass caps are C21, C24, C23, C17, C18, C27, C19, and C20 (C19 and C20 si…

Re-post of question to Particle team: If multiple WiFi credentials are stored in the P1, how does the P1 go about acquiring a specific SSID? Does the P1 assign any certain priority to each SSID based on when the SSID was stored in memory?

The most recently added credential is tried first, then older ones.

Thanks, mdma. How long will the P1 try each credential before trying the next stored credential?

P1 vs. Photon Wifi Acquire Time

General

lloydo December 24, 2015, 4:42pm 2

It looks like @peekay123 tried to answer this, but in the wrong thread:

Topic		Replies	Views
Question about Photon P0 & P1 General	22	8809	April 22, 2015
Wifi connect taking a long time Firmware	8	2445	March 23, 2016
[Solved] P1 Consistent Wifi Failure Hardware	1	1170	October 31, 2016
My Photons are experiencing inconsistent Wi-Fi connection behavior Troubleshooting	27	6997	May 8, 2017
P1 setup fails on App, CLI + interactive Listen mode Troubleshooting	11	1668	April 30, 2019

P1 vs. Photon Wifi Acquire Time

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