Blue2monster

If you need to have a logic shifter for your I2C bus, this is all you need. This will autosense the data's direction and act seamlessly in your design.

still working on the SI4732 Radio Project PCB with #Meshtastic
functionality

we need to talk about that Ring Super Bowl ad

your decoupling capacitor of the ESP 32 ist toooo far away.

first PCBs of the year from @aisler.net are here! 🎉

(NNNI26 for €10 off this entire year!)

Can sit on your desk, act as an Emergency Radio and you can Monitor the air quality in your room

Lets call it a bike computer with entertainment... Do not know yet.

I tend to Stick to seeed xiao or adafruit qt pinout. This makes adding Modules more flexible. Check my pcb here:
Right now in the last step of schematic checks
bsky.app/profile/blue...

Had a similar idea.. Still using the esp32... But added an fm Radio and some other rf stuff

any Chance to Go big? how about the Release of ee02 for 13.3 inch

can't stop watching this clip of a tesla Optimus teleoperator taking his headset off before properly logging out the robot

Rendered PCB Photo of a DualBand FM Radio Reciver with SI4732 and SI4735 controlled by a HT-CT62 LoRa ESP32-C3 Chip

Rendered PCB Photo of a DualBand FM Radio Reciver with SI4732 and SI4735 controlled by a HT-CT62 LoRa ESP32-C3 Chip

Lots of Work and Brains went into this PCB KiCad Design.
Equipped with an SI4735 & SI4732 FM Receiver, I2S MAX98357 3Watt Amplifier, SI5331 VCO,LoRa, Wifi, BLE CT62 ESP32-C3, LSM6DSV Gyro+Acc, RV3028-C7 RTC and an BME690 Temp, Humid eCO2 Sensor. Ready to Mount an 1.28" or 1.8" Inch Touch Display.

May i have a Look on the other side

Looks awesome. 2 layer or 4 layers?

Wenigstens standest du nicht im Bild... Wie br24

devices.esphome.io/devices/guit...

Works perfect with esphome

GitHub - DIYables/DIYables-ESP32-WebServer Contribute to DIYables/DIYables-ESP32-WebServer development by creating an account on GitHub.

DIYables ESP32 WebServer (1.0.1) for esp32 by DIYables.io

➡️ https://github.com/DIYables/DIYables-ESP32-WebServer

DIYables ESP32 WebServer library with WebSocket support

#ArduinoLibraries #ArduinoLibs #esp32Libraries

0.645 x 0.645 mm is the size of this LDO!

It's half the size of the 0402.

Low Quiescent Current is here 340 nA

The Dropout Voltage of 140 mV and 300 mA output current isn't so important. An ultra-low current switching regulator would work too, but this LDO has a significantly lower PCB footprint.

GitHub - dabshield/DABShield: Library for DABShield Library for DABShield. Contribute to dabshield/DABShield development by creating an account on GitHub.

DABShield (2.0.7) by Adrian Verity

➡️ https://github.com/dabshield/DABShield

Library for controlling DABShield DAB/DAB+/FM digital radio shield

#ArduinoLibraries #ArduinoLibs

Have you ever used the autocomplete hotkey in KiCAD's PCB editor? Did you even know about it?

IMPORTANT AND DEEPLY EMBARRASSING CORRECTION: MAY 23rd and 24th!!!!!!!!!!

wenn ich das gewusst hätte... war heute schon in Pforzheim

This Device really got me thinking: WHY 2x ESP32?
The interesting part about it is: It is the same as Waveshare www.waveshare.com/product/ardu...

de.aliexpress.com/item/1005009...
Got one for 23 €
Finally:ESP32 for BT sink and another ESP32-S3 for Display. Both ESP32 on one USB Connector

Image of a rendered PCB for a FM Radio with SI4735 & SI4732 Chip and ESP33-C3 & LoRa in a compact Heltec HT-CT62

Image of a rendered PCB for a FM Radio with SI4735 & SI4732 Chip and ESP33-C3 & LoRa in a compact Heltec HT-CT62

Design of a PCB for a simple FM Radio takes longer than expected. More and more ideas come up. Dual FM Tuner. I2S Audio, Synth VCO, BME690 Air Quality and #LoRa or #Meshtastic support. Did I mention ESP32-C3? Or Seeed Xiao Bord support?

Josquin Debaz on Mastodon posts: "When we see an extremely DIY project, you always get someone who jokes "well, you didn't collect sand and grow your own silicon". [Patrícia J. Reis] and Stefanie Wuschitz @stefanie_wuschitz did the next best thing: they collected local soil, sieved it down, and fired their own clay PCB substrates over a campfire." They link an article: "PCBs The Prehistoric Way" https://hackaday.com/2025/09/18/pcbs-the-prehistoric-way/

Original post: piaille.fr/@josquindeba...

please never use the AMS1117 again. It is sooo power inefficent. Please replace with RT9013 or something else. 10mA Quiescent current for the AMS is just not acceptable.

thanks for that hint

do share the KiCad Files somewhere?

Awesome idea