ESP-01s on Serial2

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Tom Lake

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Jan 23, 2026, 8:19:10 AM (5 days ago) Jan 23
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I have an  ESP-01s and would like to use it on Serial2. I see the eight holes for it on the mainboard, unlike the four holes shown in the instructions. Is it mounted on the back of the board (the same side as the Due) or front? Which way does it go? Pointed up or down? I'd guess on the back and pointed up but I want to make sure.
Also, once I have it soldered in, how do I specify the WiFi network and password or don't I need to? How do I connect a terminal to it?

I apologize if all this is covered somewhere but I couldn't find anything but a single mention of it in the Startup Options page on the Website. Other than mentioning the
 ESP-01s, it's not even listed in the assembly manual.

Chris Davis

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Jan 23, 2026, 8:43:29 AM (5 days ago) Jan 23
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It hasn't been added to the manual yet, so you get to be the first to test it.  Yes, it is would the oriented the only way it could fit (on the back pointed up) and you can use the setup instructions on the website for adding the ESP-01s to the Altair-Duino Pro or Experimenter.

Chris Davis

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Jan 23, 2026, 11:48:07 AM (5 days ago) Jan 23
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Tom Lake

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Jan 24, 2026, 1:41:14 AM (4 days ago) Jan 24
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I have an ESP-01s and I have a programmer for it but what file do I need to send it to program it? I don't see any that look like they'd be suitable.

Chris Davis

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Jan 24, 2026, 8:43:10 AM (4 days ago) Jan 24
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Chris Davis

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Jan 24, 2026, 8:43:49 AM (4 days ago) Jan 24
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