RUSTY ESP12E-DHT21

2 layer board of 1.60x2.50 inches (40.64x63.50 mm).
Shared on March 15th, 2016 05:03.

This is a DHT 21 (11/22) [I use AM2301] sensor powered by a ESP8266 (12-E). It is meant to be run off of 2 AA batteries, hence the reason for the U1V10F3 3.3v pull-up from Pololu. It includes deep-sleep circuit and the necessary reset/flash (burn) buttons. It also includes battery level detection (though the resistor size likely needs to be adjusted.) Here is a component list: R1= 1M R2= 220k R3= 10k R4= 10k R5= 10k R6= 10k R7= 10k R8= 10k R9= 470 C1= 0.1mF

The headers for the DHT 21 (11/22) are in the upper right corner.

This is an untested REV A board

Purpose: Interior low-power temperature/humidity sensor powered by 2-AA batteries.

This is my 1st EagleCAD/PCB project

Order board. Download. Permalink. Embed order link.