I see only one thread with ESP32-S2 in the Showcase forum, so here's another one.
This is a small breadboard friendly dev board I designed which is compatible with ESP32-S2 WROVER and WROOM. Many pins are not accessible to make it smaller. It includes a MCP1700 or MCP1702 voltage regulator which has a very low quiescent current, so the board only draws 26uA during deep sleep.
For reverse polarity protection it uses a cheap P-Channel MOSFET instead of a diode.
Capacitors and resistor use a 0805 footprint to make it easy to handsolder.
Schematic and PCB design can be accessed here: https://oshwlab.com/Miraculix200/s2-tiny
Small ESP32-S2 dev board for handsoldering
- lowtolerance
- Posts: 9
- Joined: Tue Dec 15, 2020 6:35 pm
- Location: Virginia Beach, Virginia, United States of America
Re: Small ESP32-S2 dev board for handsoldering
Very nice! I’m working on a couple of esp32-s2-based projects and its astounding how easy (and CHEAP!!) it is to make a custom pcb for these modules. I’m using the new MINI modules for one, and the PCB is only as wide as the module (<17mm), and the BOM for it is less than $2 USD, including the module
Re: Small ESP32-S2 dev board for handsoldering
Only about half pins exposed, and missing pins 19 and 20, so no possible to use native USB.lowtolerance wrote: Very nice! I’m working on a couple of esp32-s2-based projects and its astounding how easy (and CHEAP!!) it is to make a custom pcb for these modules. I’m using the new MINI modules for one, and the PCB is only as wide as the module (<17mm), and the BOM for it is less than $2 USD, including the module
- lowtolerance
- Posts: 9
- Joined: Tue Dec 15, 2020 6:35 pm
- Location: Virginia Beach, Virginia, United States of America
Re: Small ESP32-S2 dev board for handsoldering
The ESP32-S2-MINI modules definitely do expose pins 19 and 20chegewara wrote: ↑Mon Feb 15, 2021 7:51 pmOnly about half pins exposed, and missing pins 19 and 20, so no possible to use native USB.lowtolerance wrote: Very nice! I’m working on a couple of esp32-s2-based projects and its astounding how easy (and CHEAP!!) it is to make a custom pcb for these modules. I’m using the new MINI modules for one, and the PCB is only as wide as the module (<17mm), and the BOM for it is less than $2 USD, including the module
Re: Small ESP32-S2 dev board for handsoldering
hello,
I would like to ask questions. i built the circuit board as you showed, i used the same components. but the problem is when the ESP32 S2 tries to connect to the WLAN does not work. I also use a 18650 battery.
Have you tried to connect the board to WiFi? did that work for you?
Thanks
I would like to ask questions. i built the circuit board as you showed, i used the same components. but the problem is when the ESP32 S2 tries to connect to the WLAN does not work. I also use a 18650 battery.
Have you tried to connect the board to WiFi? did that work for you?
Thanks
Re: Small ESP32-S2 dev board for handsoldering
Can you check power source, especially voltage on 3.3V pin. Wifi is not tolerant and not accepting over-voltage.abdel1254 wrote: ↑Sun Jun 13, 2021 9:55 amhello,
I would like to ask questions. i built the circuit board as you showed, i used the same components. but the problem is when the ESP32 S2 tries to connect to the WLAN does not work. I also use a 18650 battery.
Have you tried to connect the board to WiFi? did that work for you?
Thanks
I did once it by accident and connected 5V to 3.3V. esp32 did work normally except that i had issue with connecting to wifi.
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