search

jeelabs / esp-link

esp8266 wifi-serial bridge, outbound TCP, and arduino/AVR/LPC/NXP programmer
Other
2.82k stars 720 forks source link

Wiring of "GPIO2: optionally connect green LED to 3.3V (indicates wifi status)" #491

Open tonertiffi opened 4 years ago

tonertiffi commented 4 years ago

HI, i like the idea off the led to indicate status,but to get my head around the wiring.

Using a ESP-01

I assume the statement means the following GPIO2>>>>>green led (-) leg>>>>(+)leg to 3.3v. No resistor Can anyone clarify that.

If anyone has a wiring diagram

mr-sneezy commented 4 years ago

Add a resistor or else you rely on the ESP-01's own current limiting on the GPIO2 pin, if it has any. Anything from 250ohm to 500ohm betweeen the +3.3V supply pin and the +leg will be fine.

tonertiffi commented 4 years ago

Hi Attached drawing I assume that’s what you referring to. Been allot off work to design the circuit, also very expensive to print it in South Africa, around 120$ so it is very important that I get it right 1st time. Thank you for your help, much appreciated. Sent from Mailhttps://go.microsoft.com/fwlink/?LinkId=550986 for Windows 10 From: hassio scottmailto:hassio.scott@outlook.com Sent: 29 April 2020 09:52 To: jeelabs/esp-linkmailto:reply@reply.github.com; jeelabs/esp-linkmailto:esp-link@noreply.github.com Cc: Authormailto:author@noreply.github.com Subject: RE: [jeelabs/esp-link] Wiring of "GPIO2: optionally connect green LED to 3.3V (indicates wifi status)" (#491) Hi Thank you for the reply. Could I wire it up as per diagram? [cid:image001.jpg@01D61E0D.6ACF31A0] Sent from Mailhttps://go.microsoft.com/fwlink/?LinkId=550986 for Windows 10 From: Martinmailto:notifications@github.com Sent: 29 April 2020 09:45 To: jeelabs/esp-linkmailto:esp-link@noreply.github.com Cc: tonertiffimailto:hassio.scott@outlook.com; Authormailto:author@noreply.github.com Subject: Re: [jeelabs/esp-link] Wiring of "GPIO2: optionally connect green LED to 3.3V (indicates wifi status)" (#491) Add a resistor or else you rely on the ESP-01's own current limiting on the GPIO2 pin, if it has any. Anything from 250ohm to 500ohm betweeen the 3.3V pin +leg will be fine. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#491 (comment)>, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AJSHUP7IMFERUCHQRDHXYGLRO7LLHANCNFSM4MTPESKA.

connection

mr-sneezy commented 4 years ago

The LED part of the circuit is fine above.