EasyEDA User sonyvaioman
sonyvaioman
Public Project: 1 Footprint Package: 18 Likes: 2 Favorites: 4 Views: 1566

ESP12 RPi Board

1 year ago  

License: CC-BY-SA 3.0

Status: In Progress

Fork
Open in Editor

esp12 rpi zero hat

ESP12Schematic

ESP12Schematic

ESP12Board

ESP12Board

BOM

IDValueQty.PackageComponentsManufacturer PartSupplierSeeedStudio
1Raspberry Pi B+ 40P GPIO Header1HDR2X20HDR
2ESP8266-12E/ESP-12E1LGA22-2.0-24X16MMU1ESP8266-12E/ESP-12ESeeedStudio317060015
30.1u2C0805C1,C7
4200R6R0805R1,R2,R3,R4,R5,R6
50R2R0805R7,R13
610k1R0805R8
7Stereo_TS1JACK_3.5_PJ313D-SMTU2
8270R2R0805R9,R10
933n2C0805C2,C3
10150R2R0805R11,R12
1110u4C0805C4,C5,C6,C8
12BAV992SOT23D5,D6
13AMS1117_SOT2231SOT223U3
140R/NC1R0805R14
15SIP21HDR1X2P1

Comments

sonyvaioman

For ESP8266
Populate R1, R2, R5 and R6.

If using 1 bit mode with /HOLD populate R7 (you may want to put a value there, e.g. 200R). If using 4 bit mode, populate R3 and R4.

If using 1 bit mode you can re use GPIO27 as the enable pin for the ESP8266 so populate R14. Otherwise populate R13 and use GPIO6.

R8 is an optional 10K pullup for RST, as only using the internal pullup can lead to stability issues.

For Power, C1 0.1uf and C8 10uf should always be populated. If using the RPi's 3V3 supply put a wire / jumper across the two pin header at the bottom. If using a regulator populate the SOT223 (e.g. with AMS1117 or LD1117S33) and populate C6 10uf and C7 0.1uf.

For Audio
The audio uses GPIO12 and GPIO13 to which you need to remap PWM0/PWM1. See https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi-zero
You probably want to use components with good tolerances here unless you don't care about audio quality. Although it might not matter as not much care was taken with the routing, its just an easy 'add on'.

Populate R9,R10 with 270R. C2,C3 with 33nf. R11, R12 with 150R. C4, C5 with 10uf. Then populate the PJ313D audio jack.
The two BAV99 SOT23 dual diodes are protection for the RPi's GPIO and are optional but very strongly recommended as its a few cheap diodes vs a potentially dead Pi.

framboise314

Hello Sony
I'm a french blogger and i like your project. I would like to write an article about it for EasyEDA and publish a translation for my french readers on www.framboise314.fr
The blog receives between 5000 and 6000 visits / day actually.
Of course there will be links to this EasyEDA page and credits to you as I usually do on framboise314
I have some questions for the article
Do you agree this ?
Who are you what is your job ?
Did you test the board, what is the range of the wifi link ?
have you one or more photos of the board with its components
did you buy the components all in the same store or in many different stores ?

Hope to read you soon
best regards
François
https://www.facebook.com/Framboise314
https://twitter.com/framboise314

my direct mail address is [email protected]

Add Comment