I2C Multiplexer pHAT for Raspberry Pi

by 8086

This pHAT allows you to connect multiple I2C devices with the same address onto a single I2C bus.

It's a tidy and compact way of connecting an I2C multiplexer IC (TCA9548A) to a Pi - ideal for coupling with a Pi Zero W for a neat remote monitoring and graphing setup (though it's also compatible with all models of Pi with a 40 pin GPIO).

The EEPROM automatically loads the correct i2c-mux overlay and turns it into 8 individual I2C buses (/dev/i2c-3 to /dev/i2c-10) allowing direct communication with the I2C devices as normal (via i2cdetect / i2cget / i2cset / Python SMBUS, etc).

For each multiplexed output there are 4 pins:

  • SDAx
  • SCLx
  • GND
  • V

The "V" output can be altered from the default 3.3 volts to 5 volts by cutting the PCB trace between V and 3v3 and bridging V to 5v. The 3.3v supply is taken directly from the Pi 3v3 rail so care should be taken not to overload it.

Please note: product colour may vary, some production runs have been on a green PCB, but there is no functional difference :-)

43 customer reviews

3 months ago
Exactly what I was looking for. Device I ordered recently came without battery dueto shipping restrictions
by lee about LiPo Battery Pack via REVIEWS.io
4 months ago
It is a huge battery, but it is perfect for a wireless keyboard. With a slighlt longer spacers it fits perfectly under the PCB, and it last for months with a single charge.
by Roland about LiPo Battery Pack via REVIEWS.io
7 months ago
Perfect just wish i had an option to get the smaller connector that fits devices like the heltec lora v3 boards..
by David about LiPo Battery Pack via REVIEWS.io
7 months ago
Perfect just wish i had an option to get the smaller connector that fits devices like the heltec lora v3 boards..
by David about LiPo Battery Pack via REVIEWS.io
8 months ago
I bought it to add power to the Pico lipo when not connected to anything else. Works as it should. Easy plug and play
by Frederick about LiPo Battery Pack via REVIEWS.io
a year ago
Quick and safe delivery - a compact, powerful, and reasonably priced battery perfect for my 1974 Texas Instruments calculator!
by Adam about LiPo Battery Pack via REVIEWS.io
a year ago
Small, light, worked perfectly (likely more than 30mins of usage) with a MLX90640 connected to a PyGamer
by Andrea about LiPo Battery Pack via REVIEWS.io
3 years ago
It works and it's good value. Well packaged and delivered, decent capacity. More suited - combined with a Pi Pico W - to uses with one/two days autonomy than weeks and weeks, but YMMV obviously.
by Matthew about LiPo Battery Pack via REVIEWS.io
3 years ago
An excellent buy, built-in battery protection circuity is great for peace of mind.
by Tristan about LiPo Battery Pack via REVIEWS.io
3 years ago
Reliable keeps a good charge and fantastic form factor for any small project. I use mine on my Badger 2040!
by Michael about LiPo Battery Pack via REVIEWS.io
3 years ago
A perfect companion for my badger and for any other microcontroller projects
by Eric about LiPo Battery Pack via REVIEWS.io
3 years ago
I got this LiPo battery for my Badger 2040 Badge. It is much better than the original twin AAA cell device that came with the Badger. I have 3D printed the back for the Badger and the LiPo now fits inside and makes it completely self contained. It comes c/w a built in over discharge detector which is brilliant. Can really recommend getting this typeof cell if you buy a Badger 2040. Bill
by Bill about LiPo Battery Pack via REVIEWS.io
3 years ago
Used a couple of these for custom lights in a Christmas Manger display, worked perfectly.
by John about LiPo Battery Pack via REVIEWS.io
4 years ago
It's a battery. It works. Comes with some charge and fits Adafruit Feather boards nicely (connector is a genuine one).
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Using these BAT0004 LP503562 1200 mAh LiPo Battery Packs with the Adafruit MagTag. Note: This 1200 mAh variant is not the size used in the reserved space on the MagTag PCB. I wanted longer life for our MagTag's between recharge events. So am using these variants and a custom case 3D printed case. This item is the type of battery recomended by Adafruit i.e. a PKCELL LiPo Tests confirmed the anticipated extended device powered time was achieved. The increase being inline with the increased capacity of the battery. In my case from around 7, to over 28 days of custom MagTag application use. The devices come individually boxed in small cardboard boxes. The battery is within a small plastic bag in the cardboard box. The outer carton which contained 4 batteries, was very well packed. Shipping was by specialist carrier, as you would expect with a LiPo battery.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Small, compact and light – perfect for the portable device I'm using it in. So far so very good.
by Nick about LiPo Battery Pack via REVIEWS.io
4 years ago
working well, made it portable with longer pin, so can be use on any pico board.
by Valerio about LiPo Battery Pack via REVIEWS.io
4 years ago
Well made, with protection circuitry. Very quick delivery. I bought 2 for a remote humidity project and they are performing flawlessly!
by Garry about LiPo Battery Pack via REVIEWS.io
4 years ago
Fits all Adafruit Feather boards great. Be careful pulling it out as the connector is very stiff and it feels like the wires might pull out of the white connector end.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Fits all Adafruit Feather boards great. Be careful pulling it out as the connector is very stiff and it feels like the wires might pull out of the white connector end.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Does what it says on the tin, great for pairing with the Ada fruit boards with power connectors already attached and peace of mind knowing there are some safety circuits already on the battery
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Bought to go with the Adafruit LiIon/LiPoly Backpack Add-On, and am happy with it so far.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
It's a battery, there's not a lot more to say. I'm using it to power a Raspberry Pi Pico, and it does the job nicely.
by Ed about LiPo Battery Pack via REVIEWS.io
4 years ago
Came well packaged and arrived really quickly. Exactly what I needed for my project and I’ll definitely be using this site again.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
Great little battery, comes pre terminated and holds charge very well. Works great with the lipoly back pack on my sfx soundboard.
by Anonymous about LiPo Battery Pack via REVIEWS.io
4 years ago
This battery is an excellent size and capacity and as far as I can tell performs fine.
by Martin about LiPo Battery Pack via REVIEWS.io
5 years ago
It gets shipped with a cool 'explosive' notice on it, so you know it REALLY means business.
by Sean about LiPo Battery Pack via REVIEWS.io
5 years ago
Very small and so excellent for any costume/fancy dress project or indeed anything small
by Stephen about LiPo Battery Pack via REVIEWS.io
5 years ago
I used this for a project which needed to be mobile and it works perfectly, long battery life haven’t really needed to charge it yet
by Anonymous about LiPo Battery Pack via REVIEWS.io
6 years ago
OK a bit larger than I need but should be fine for the higher current draw from Arduinos coupled with Lo Ra Radio and GPS
by David about LiPo Battery Pack via REVIEWS.io
6 years ago
Quick delivery, thanks for selling these batteries with the connector ready to use with the Adafruit compatible feather boards.
by Anonymous about LiPo Battery Pack via REVIEWS.io
6 years ago
Holding charge nicely. Bought to use with the Adafruit Feather Huzzah - it's well-constructed with a decent length lead and a connector that snaps easily and snugly into place on the Huzzah. Bought for using with work kit and will be buying one of these myself for home use :-)
by John about LiPo Battery Pack via REVIEWS.io
7 years ago
Great - does just what you expect. Fast, efficient delivery from Pimoroni.
by Richard about LiPo Battery Pack via REVIEWS.io
7 years ago
Quick delivery, well packed and easy to fit. Operates correctly too! (Always a bonus)
by Steve about LiPo Battery Pack via REVIEWS.io
7 years ago
fast, efficient, good tracking, and the battery did exactly what I wanted it to do!!
by Andre about LiPo Battery Pack via REVIEWS.io

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