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adafruit

@adafruit@mastodon.cloud

Limor "Ladyada" Fried - Adafruit is a USA Manufacturer, open-source hardware, certified Minority and Woman-owned Business Enterprise (M/WBE) Teaching, sharing, #engineering #DIY #electronics #opensource #opensourcehardware #hardware #python #circuitpython #arduino, #raspberrypi #art #hacking... account is managed by @ladyada @ptorrone no bots, all toots are from either ladyada or pt, blame them :)

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adafruit, to random
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Desk of Ladyada - DS2484 Testing, RP2040 Adalogger bringup & IrDA https://youtu.be/Ivm_0VRW-Bg

adafruit, to random
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Coming soon - RP2040 "Bones" AdaLogger

We decided to take a look back at our RP2040 "Bones" boards, and found that we somehow neglected to make one for SD card interfacing. so here it is! with a micro SD socket, we connect all the SPI/SDIO pins so either interface can be used. We still have space for all the classic "Bones" elements: RP2040 with 8 MB Flash, USB C, battery charging, neopixel and Stemma QT I2C port.

adafruit, to random
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USB C plug breakout prototype testing

We finally got our USB C plug breakout prototypes put together and now its time to test! of course we love to use our own breakouts when verifying functionality so here we're using our switchable USB adapter to check functionality: power, ground, D+ and D-. if a device enumerates we know its good! we tested the CC line by plugging it into an apple wall adapter: they're picky about having a 5.1K resistor on the CC pin.

video/mp4

adafruit,
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that worked too - so now we're good to book final PCBs.

adafruit, to random
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10% discount code, code is: uhid http://www.adafruit.com ends at midnight NYC time

adafruit, to random
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WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/2jDJdR5wA-E

adafruit, to random
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WE ARE LIVE! SHOW AND TELL! https://youtu.be/Eo3y5NlQS6o

adafruit, to random
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Prototype board with the DS2484

We had a customer request for an I2C to 1-Wire converter: handy for when you don't have a spare GPIO, or maybe you can't do fast pin toggling, or maybe you have a single board computer or desktop that you want to connect to 1-Wire devices like the DS18B20. so we spun up a prototype board with the DS2484 (https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS2484R-T/5020823)

video/mp4

adafruit,
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the latest version from Analog Devices. here i'm testing out my code: with multiple DS18B20's, some TO-92's (https://www.adafruit.com/product/374) and a wired sensor (https://www.adafruit.com/product/381) that i can dunk in a teacup to verify it reports the temperature right.

adafruit, to random
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Desk of Ladyada - DS2484 Testing & Round Touch Screen Samples https://youtu.be/MUO_OD5AN08

Ladyada tests electronics like CH9328 and HX711, while also developing a DS2484 breakout for easier I2C sensor connection on SBCs without GPIO. Also featured are new round touchscreens and a RP2040 Feather Adalogger. Plus, a quick dive into 1-Wire interface chips.

adafruit, to random
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10% discount code, code is: barrel http://www.adafruit.com ends at midnight NYC time

adafruit, to random
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WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/b-oeWFktD_o

adafruit, to random
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SHOW and TELL 5/29/2024 https://youtu.be/t6kl6fvgyBI

adafruit, to random
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Desk of Ladyada - HDC3022 + RGB LCD Shield revision
https://youtu.be/sXuS6K62gw4

Memorial Day weekend edition: improving libraries and revisions. We successfully coded the HDC3022 temperature+humidity sensor with Arduino and GPT-4's help. The RGB LCD Shield kit, previously DIP-based, now features almost entirely SMT components. Additionally, we're updating our RGB LCD Shield and Plate to SMT, seeking compatible tactile switches for a seamless transition.

adafruit, to random
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10% discount code, code is: pixelt http://www.adafruit.com ends at midnight NYC time

adafruit, to random
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ASK AN ENGINEER 5/22/2024 LIVE! https://youtu.be/sJcif2nuwd0

adafruit, to random
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SHOW and TELL 5/22/2024 https://youtu.be/SmsUMfGLSGs

adafruit, to random
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Desk of Ladyada - desk plant health monitoring with sproutsense https://youtu.be/mPxiROA_Xrs

adafruit, to random
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Switchable USB doo-hickey

We don't know what everyone calls these things, but basically we wanted a way to easily monitor or detach the power/ground/data pins on a USB connection for power monitoring or data sniffing. we're using the S&K SDA04H1SBD (https://www.digikey.com/en/products/detail/c-k/SDA04H1SBDR/10063882) which is rated for 100mA at 5V, so it's not for high current devices, but we like the look of just having 4 compact switches side-by-side and there's lots of microcontroller boards that use under 100mA. Coming soon!

adafruit, to random
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DS2484 I2C to 1-Wire converter

In theory, there's a lot of 1-Wire devices out there, but in reality almost everyone uses 1-Wire for DS18b20 temperature sensors. the long wire lengths and ease of 'chaining' by sharing a single bus wire makes it perfectly fine for this purpose. you can bitbang 1Wire on most microcontrollers, and some SBCs like Raspberry Pi have kernel module support. (https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing)

adafruit,
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But there might be chips without the 1-Wire capability, or maybe you want to use 1-Wire devices on your desktop computer or other SBC with I2C but no 1W.

by special request! this is a DS2484 (https://www.digikey.com/short/5f85v4tf) Stemma QT board that uses the newest I2C-to-1W controller chip, with ESD protection and support for split supplies.

adafruit,
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you can easily connect it to an existing I2C bus and then use the screw terminals to attach multiple DS18b20's - this library looks promising (https://github.com/pilotak/DS248X) for Arduino. Coming soon!

adafruit, to random
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10% discount code, code is: trrs http://www.adafruit.com ends at midnight NYC time

adafruit, to random
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WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/FuGx2bqP_K4

adafruit, to random
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SHOW and TELL 5/15/2024 https://youtu.be/wXdIm9QDh4g

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