Shared Projects by Telanoc

Simple interface to run my Anet A8 using ESP3D and an ESP-01 module. A TTL gate keeps startup serial data out of the printer. Requires removing 2 zero ohm resistors and installing a 6 pin header on the Anet controller in the BLE/USB position. You will also need to add code to the ESP3D sketch’s setup() function to set GPIO 0 as an output and write a logic LOW to that pin in order to enable transmit data to go out of the ESP-01 to the printer. This board should plug in to the connector next to the LCD connector. Power should be taken from the 12v board power (or a separate wall-wart might be used). Given the various problems an Anet A8 has, I didn’t want to stress its on-board voltage regulators with an ESP8266. This is revision 2 of this board, which uses a Recom R78E3.3-1.0 switching regulator. I also brought out GPIO2 to a header so the reset functionality of ESP3D can be used.

Schematic and board files (Eagle 7.x format) are at https://github.com/telanoc/anet_esp3d_board

Simple interface to run my Anet A8 using ESP3D and an ESP-01 module. A TTL gate keeps startup serial data out of the printer. Requires removing 2 zero ohm resistors and installing a 6 pin header on the Anet controller in the BLE/USB position. You will also need to add code to the ESP3D sketch’s setup() function to set GPIO 0 as an output and write a logic LOW to that pin in order to enable transmit data to go out of the ESP-01 to the printer. This board should plug in to the connector next to the LCD connector. Power should be taken from the 12v board power (or a separate wall-wart might be used). I wasn’t sure if the on-board regulators would handle the extra load of an ESP8266.

Later edit, after getting boards built and tested: Going from 12v to 3.3v generates a lot of heat. I recommend to either use an external 5v supply (not 12v) or replace the regulator at U1 with a Recom R-78E3.3-1.0 (though the pinout will be different!! Watch how you wire it!)

License: Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)

Board and schematic (eagle format) are at https://github.com/telanoc/anet_esp3d_board

Just a small dual linear power supply using LM78Lxx and 79Lxx chips. Very flexible… just use a center tapped transformer with enough voltage for your regulators, and appropriate capacitors.

Interface board to easily use an ESP-01 with RGB LED strips. I use this for a TIX clock. Board (and LEDs) powered with 5v DC. A 3.3v regulator powers the ESP-01. I also use a mosfet level converter for the data line, though I don’t know if it’s absolutely necessary… better safe than sorry though.

U1 - TPS732xx (whichever one is 3.3v)
Q1 - BSS138 mosfet
R1,2,4 - 10k
R3 - 300-500 (not critical)
C1 - 10uf
C2 - 0.1uf (I've used 1uf for both and it works)

Light bar for under my desk cupboards. I have a bunch of super bright white LEDs that I need to use up and these will help throw light around the desk.

With a 12v supply and 47 ohms for the resistor, I was reading 8ma current draw, and the LEDs were pretty bright.

Apparently there’s a bug with the board outline code so it displays funny on the web site - the 9 boards I ordered all came out fine.