ESP12F Minimum Serial Wiring
Re: ESP12F Minimum Serial Wiring
Finally got it booted, wasn't giving it enough power Scotty. Even the AA batteries that were powering a D1 mini aren't powering this thing. Still haven't found the boot baud...
Re: ESP12F Minimum Serial Wiring
I have confirmed that even the first schematic I posted is perfectly stable with a good power supply. I still haven't been able to boot with the serial adapter power or 2x Energizer Ultimate Lithium batteries that run at 3.4v. Still seeing a huge voltage drop on the batteries. Not seeing a ton of amperage, but not sure its reading right. Seeing 200mA draw max.
Edit: Seeing overheating with first schematic, recommend this minimum wiring:
v3.3:
-VCC
-EN (w/ 10k resistor)
GND:
-GND
-IO15 (w/ 10k resistor)
Edit: Seeing overheating with first schematic, recommend this minimum wiring:
v3.3:
-VCC
-EN (w/ 10k resistor)
GND:
-GND
-IO15 (w/ 10k resistor)
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- Posts: 3
- Joined: Thu Jul 22, 2021 5:20 am
Re: ESP12F Minimum Serial Wiring
I have the similar problem as you did in the first place.
Successfully flash the FW, but couldn't get into the RPEL.
I tried the minimum wiring as you recommended with the breadboard power supply, but still no luck.
Could you please share your HW setup to make it work?
Thanks~
Successfully flash the FW, but couldn't get into the RPEL.
I tried the minimum wiring as you recommended with the breadboard power supply, but still no luck.
Could you please share your HW setup to make it work?
Thanks~
PsuFan wrote: ↑Sat Oct 19, 2019 2:23 pmI have confirmed that even the first schematic I posted is perfectly stable with a good power supply. I still haven't been able to boot with the serial adapter power or 2x Energizer Ultimate Lithium batteries that run at 3.4v. Still seeing a huge voltage drop on the batteries. Not seeing a ton of amperage, but not sure its reading right. Seeing 200mA draw max.
Edit: Seeing overheating with first schematic, recommend this minimum wiring:
v3.3:
-VCC
-EN (w/ 10k resistor)
GND:
-GND
-IO15 (w/ 10k resistor)