Controlling your World the Easy Way

For single channel conversions I like the MCP3221 because it does what it says on the datasheet. No surprises. You can scale the input with a resistor divider and the resistor values don't have to be particularly low in order for the converter to still work correctly. For more channels I like the AD...

I have noticed that loading microPython is not always easy. If someone has a bullet proof setup for Windows, please post it.

When you want the LEDs completely off, make the pin an input. That's guaranteed to turn them off.

I never noticed this till now.

Yes, the regulator is the limiting device. However, for higher voltages heat dissipation will enter into the picture as well.

I don't use Eagle. I have attached a simplified drawing that shows the board dimensions, hole and pin positions.

It would be great if you were to share the footprint with others.

Daniel

I will investigate and see if I can replicate the issue. It seems to be an error in the hardware support for the ESP32 code. Please make sure that you installed the ESP32 compilers and tools correctly. This video explains how its done https://www.youtube.com/watch?v=DgaKlh081tU Daniel I replicated t...

The Rev1 and Rev0 versions of the ESP32 has a couple of issues with the ADC. There is a topic on noise pickup https://forum.ezsbc.com/viewtopic.php?f=12&t=8816 that describes that issue. In addition to that issue the ADC is not as linear as it should be but the non-linearity is repeatable and ca...

I've not heard of this before from a customer but there's a first time for everything. There are two devices involved in communication between the programming environment and the ESP32. They are the ESP32 and the USB to Serial converter and potentially the 3.3V LDO that powers the ESP32. If the LDO ...

Can you provide a little more detail? On which port did you send the command?
The ESP32 is not a USB master so you need to send the commands on a serial or SPI port.

The reason why you get the message is that the code is being compiled for the wrong board. Make sure that the board is set to "ESP Dev Module" before you try to compile the code. Once you select the ESP32 as the target the Arduino environment should compile the correct version of WiFi.cpp ...

Here's two videos that describe how to get BLE to work on the ESP32 using the Arduino environment. https://www.youtube.com/watch?v=2mePPqiocUE https://www.youtube.com/watch?v=osneajf7Xkg&t=1s There are many useful links in the comments to the videos. The code is here: https://github.com/SensorsI...

EZsbc_ESP32_Pinout.jpg This is the correct pinout and functions for the new board. The schematic is attached. Thanks to Geoff Bunza for the photo and pinout diagram. The Schematic is no longer correct for all boards. Boards shipped after January 24 use a new voltage regulator. The HT7333A regulator...

The ESP32 module does not ship with the AT command interpreter from the factory. It seems to just report the free memory and status when it boots up. In fact, till fairly recently their wasn't an AT interpreter available. The official version can be found here: https://github.com/espressif/esp32-at ...

analogWrite is not implemented in the Arduino environment. There is a much better set of PWM controllers available. The code below demonstrates how to get PWM output on a pin. // Code for PWM drive of a small motor // ESP32 does not support analogWrite but has ledcWrite instead // There are 16 PWM c...

The Arduino Wire library works on the ESP32. The SCL pin defaults to IO22 and the SDA pin defaults to IO21. External pull-up resistors to 3.3V are necessary for the bus to behave correctly. 2.2k Ohm is the proper value to ensure correct timing with the specified capacative load. With short wires on ...