Toddler Phone Calls Family And No One Else

A hobbyist built a toddler-safe telephone that can only call pre-set family contacts. An ESP32-S3 acts as a USB host for a commercial retro-style handset and runs a minimal SIP client connecting over WiFi to a VoIP account, in this case Twilio. There are no inbound calls, so there's no risk of scam calls. Each contact gets an arcade button that lights up based on that contact's time zone, and a text-to-speech voice announces network errors or when it isn't call time.

Source: https://hackaday.com/2026/11/03/toddler-phone-calls-family-and-no-one-else. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.

Recommended for you

Hacker News1 Hot5 min3 h ago

Quasi-Logarithmic Kitchen Timer

Like some of you, we have several kitchen appliances with integrated digital timers.

#hardware#embeddedSource

Hackaday1 Hot2 min9 h ago

Saving A Vintage High-Voltage Power Supply From The Scrap Heap

A Fluke Model 407 high-voltage power supply gets rescued from the scrap heap and diagnosed on video. Mr Carlson powers it up safely using an isolated transformer and a current-limited variac, avoiding the risk of full power on old components. The vacuum-tube-and-circuit-board unit shows no visible damage but its output misbehaves. Using the original schematics, he traces the fault to a single faulty capacitor in the feedback loop that keeps output voltage constant.

#hardwareSource

CNX Software1 Hot4 min5 h ago

SparkFun IoT RedBoard ESP32-P4 – Arduino UNO-like ESP32-P4 v3.x development boards with WiFi 6 or PoE options

SparkFun introduced two new development boards called IoT RedBoard, both based on the ESP32-P4 v3.x (ESP32-P4X) and compatible with the Arduino UNO R3

#iot#embeddedSource

XDA Developers1 Hot4 min18 h ago

The PlayStation 3 briefly made buying a console a way to buy a Linux computer

It was a little too good at what it did, though.

#linux#hardware#sonySource

Noted3 Hot4 min1 d ago

Someone Turned a Raspberry Pi Game Boy Into a DIY Cyberdeck

A maker transforms a Raspberry Pi gaming handheld into a DIY cyberdeck with GPS, Wi-Fi, a camera, and an ESP32. See the community build.

#iot#raspberry-piSource

XDA Developers1 Hot2 min1 d ago

You, too, can build this cute ESP32 internet radio controllable with just a dial

All of your fave tunes, all of the time.

#hardware#iotSource

Hacker News1 Hot6 min1 d ago

What I run on my $10 USD OpenStick, Linux, Homelab

What I run on my $10 USD OpenStick homelab

#hardware#self-hosting#homelabSource

Hacker News1 Hot3 min1 d ago

The $8 Linux Computer (2022)

An $8 Ox64 RISC-V single-board computer can run full Linux, not a stripped-down MMU-less kernel. It has three different RISC-V cores, but ethernet, wifi and SD card don't work yet. Flashing it is painful: it must be programmed over UART, not USB, and DevCube crashes on Wayland so you need Xorg. A CH340G USB-UART dongle failed the handshake, so the author used an RP2040 (Adafruit KB2040) running picoprobe as a serial bridge, then had to modify bflb-mcu-tool's uart interface file to strip DTR/RTS handling before it would flash the M0 core.

#hardware#embeddedSource