stefschin/brewpiless-32-pcb

PCB board to test BPL firmware with ESP32

brewpiless-32-pcb's Issues

BOM?

Would love a hands down bill of materials for this. Just got my 5 PCB's that I ordered!
The smaller ones look like 2.54mm (0.1")spacing but are the larger ones 5.08mm (0.2") or 3.96mm (0.156")?

Devkitc V4 power from 5v pin hangs on boot

I haven't built this board but I have tried to run BrewPiLess on a Devkitc V4 board and it runs fine if I power it from the built in USB port but if I power from the 5V pin, it doesn't like it. I sometimes get it to run long enough to bring up BrewPiLess but it crashes within 30 seconds. Other times it won't connect at all. Any ideas on a source for boards can be powered through the 5V pin?

A few observations since using the board

• I've been using the I/O extra header for DHT22 humidity sensors. The header has a 3.3V supply. Unfortunately, the DHT is not stable on 3.3V with cable length >1m, cable length required to reach chamber. I will probably look to optimize cable length or move DHT sensors to 4xRelay header w/5V supply. This would be a shame as the 4 x relay header could be used for auto-spunding, humidity control and chamber light etc.
• Onboard support for a ADS1115 breakout board. I don't have issues with the onboard ADC but developer notes results are non-linear and do require calibration. ADS1115 would be recommended if auto-spunding.
• Header for BMP280 (Chamber Humidity sensor alternative) supported in 4.2

EDIT: In addition to the I/O extra header I'd probably just add an additional 4-pin header with 5V. Chamber / room humidity.

EDIT 2: You already have a I2C Header for BMP280.

Burned my OLED

I finally got around to hook up my board on the test bench but the first thing that happened was that I burnt my OLED.
Apparently there are 2 versions of 4-pin OLEDS, I had this pinout:

vcc-gnd-scl-sda

Checking on some 7 pin ones I noticed they had vcc and gnd switched and so does some other 4-pin versions to.
So just a heads up, might need to mention that it should be a 4-pin with the correct order 😅

gnd-vcc-scl-sda

PCB

hi
can you please release the PCB for brewpiless.
txh remo

Buzzer polarity

I believe the buzzer according to the images on pcbway is the wrong polarity.

Rotary Switch

Really liking the BrewPiLess-32-PCB, in the early stages on setup. I've built the OLED binary.

I haven't had much luck with the rotary switch. I realize web interface is easier but I like the idea of a fall back.

I thought the KY-040 would be a safe bet but it would appear to require 5V instead of the reserved 3.3V output on the PCB. Powering the KY-040 with 5V doesn't work around the issue.

What rotary switch do you recommend?

Edit: Perhaps rotary is not a default option in the code... I will look into this.