Hi folks,
I think what I have is a fairly simple question, yet I've spent so much time Googling, that I've completely lost track of what is what.
I'm looking for an affordable voltage regulator to power an ESP32 from a number of AA or AAA batteries.
I have bought a pair of these (Dutch webshop, but English page, the PCB is only marked "S08 v5.0") and they are great, except for two things: a) they're relatively expensive (€3.00, the ESP32's they'll power are cheaper when ordered from China) and b) with a minimum input voltage of 2.5V they don't allow for the option to power the ESP32 off of a single AA-battery.
I also found the Pololu 3.3V Step-Up Voltage Regulator U1V10F3 (which is also a down regulator when the input voltage exceeds 3.3V according to the description), which would solve the second problem, but that is fairly expensive again at $6.95 a piece.
So basically my questions:
I'll happily purchase from AliExpress or an equivalent Chinese vendor and wait for month. I'll probably need quite a few to automate/create sensors for a ton of things in my home, so little savings add up
Thanks in advance for your time!
I think what I have is a fairly simple question, yet I've spent so much time Googling, that I've completely lost track of what is what.
I'm looking for an affordable voltage regulator to power an ESP32 from a number of AA or AAA batteries.
I have bought a pair of these (Dutch webshop, but English page, the PCB is only marked "S08 v5.0") and they are great, except for two things: a) they're relatively expensive (€3.00, the ESP32's they'll power are cheaper when ordered from China) and b) with a minimum input voltage of 2.5V they don't allow for the option to power the ESP32 off of a single AA-battery.
I also found the Pololu 3.3V Step-Up Voltage Regulator U1V10F3 (which is also a down regulator when the input voltage exceeds 3.3V according to the description), which would solve the second problem, but that is fairly expensive again at $6.95 a piece.
So basically my questions:
- If you were to source a 3.3V voltage regulator for a microcontroller to be powered of batteries, what'd you buy?
- What would you use if the 'single AA-battery'-option wasn't a requirement?
- Would you know of a cheaper option for where to buy the "S08 v5.0" regulator PCD I've previously bought for €3.00/p?
- Would you know of an option that could supply either 3.3V or 5V?
- Can you help me to better search terms that would aid my hunt for this part? I've mostly used 'voltage regulator', 'voltage converter', 'buck boost converter', etc., but maybe I'm way off base here.
I'll happily purchase from AliExpress or an equivalent Chinese vendor and wait for month. I'll probably need quite a few to automate/create sensors for a ton of things in my home, so little savings add up
Thanks in advance for your time!