Member #500723

Member Since: December 18, 2013

Country: United States

  • I have 3 of these from Decembr 2017 and one just this week. They all 3 still only show 512K available. When the site says the NEW ones are 1Mb. What is up? Am I missing something?

  • Just got my little ESP8266 wifi modules. Powering these things up properly is an understatement. Very finicky. Even after finally uploading a sketch successfully, the only light I ever see on both boards mind you, is the blue LED during sketch upload. NO RED power light ever comes on.

    I have powered these from use of the suggested USB to TTL cable that Sparkfun supplies. Using the VCC into a 3.3V voltage divider = NO GO Powered from a wall wart via regulated 5V with a 3.3V voltage divider = NO GO The only thing making these work, is using the 3.3V from a powered up Arduino Uno which is powered via a USB cable. = STILL NO RED LED

    Also, when uploading a sketch, I have to remove power and the serial connection before uploading a new sketch every time. Not a big deal, but thought Id make note of it. Im using the following pinout and all works. Have been able to create an access point, scan for wifi access points, and send data to an MQTT server. So once you get this lil guy running, you will be pleased!

    -- ESP8266 module -- 3v3 --> 3v3 from Arduino Uno EN (chip select) --> 3v3 from Arduino Uno GND --> GND from Arduino Uno GPIO0 --> GND from Arduino Uno Rx --> Tx of USB to TTL cable Tx --> Rx of USB to TTL cable

    • please note, I have a 16V 470uF cap on my power ahead of the power going to the ESP8266.

    Has anyone else had the same issue of NO RED LED? If so, did you fix it? Do these just not have one, despite the doc saying they do?

    Thanks and good luck!

  • I am very interested in this product, but am not 100% sure which external antenna combination I need to purchase. Obviously I need a U.FL connector type, but you guys only provide 1 option, and I dont want a sticky pad antenna. And to confuse matters more, there is the RP SMA vs. SMA antenna. Any help would be greatly appreciated.

    Thank you!

  • I couldnt find a reliable source on how much current each wire within the ribbon cable can carry. Im using one lead to send +5V to another board. And a second lead for ground. The other leads will transmit varying levels of voltage back to a mainboard via pots. If you could please tell me the current carry load of this ribbon cable that would be appreciated. Also, once calculated, could you please post the data with the part on the site for others?

    Thank you!

  • Thanks!

    Im wanting to use just two of the rotary switches for selecting up to 100 different voltages. The voltages would be sent to my Arduino. The sketch on the Arduino would have a list of samples to play based on the decade selection of 1 - 100. So I dont need much current. The voltages would be a max of 5V.

  • How would I go about setting this up to be a decade voltage box?

    I assume I need to set it up similarly to a voltage divider circuit then?

  • Nevermind. Found some here:

  • I am curious where I can pick up just the 1-pole 10-position rotary switches?

  • The datasheet doesnt show any dimensional information.

    What is the width of the square leads on the connector end?

  • I couldnt agree more. I think I am going to hold off on purchasing this item now.

    I was going to grab this board in lue of the fact that almost every other arduino board on this site is not being sold now. :(

    Thanks for your information.

No public wish lists :(