Your Badger will come preloaded with MicroPython and a suite of examples, but for the all the latest features, tweaks and fixes, you should download yourself the newest version. You can also change how quickly you update the display - faster updates will mean less saturated blacks and more ghosting on your display, so you'll need to decide whether speed or quality is more important for your application (our demos use a variety of update speeds, so you can see how they behave). There are simple drawing and text functions to make it straightforward to display things on the display. The custom display drivers in our C++/MicroPython build let us do a bunch of cool stuff with the E Ink display. You'll need to plug your battery into an external LiPo charger (like a LiPo Amigo) to charge it. Unlike some of our other boards, Badger 2040 doesn't have battery charging circuitry onboard.Not all batteries have their connectors attached the same way up! ![]() If you've sourced a battery from elsewhere, check that the connector has the red wire going to + and the black wire going to - on our board.There's no battery protection included on Badger 2040, so you should only use it with LiPo batteries that include internal protection ( all ours do).and 3D printed a backplate, secured in place with M2 nuts and bolts (if you'd like to print one of your own, you can find the STL here!).Īlternatively, you could use a hard case LiPo with Badger 2040 - we really like this tiny Galleon one.Ī few more things you should consider if you're using a LiPo: We stuck our LiPo to the back of Badger with a Velcro square to stop it from rattling around. LiPos like these are squishy and vulnerable, so a solid enclosure or backplate to protect the battery from impacts and damage whilst being worn is essential. If the person wearing the badge is an adult who knows what they're doing with LiPo batteries, it's possible to power Badger from a LiPo battery (we like this 500mAh one). It's now in low power mode - perfect to supply the modest power needs of our Badger friend (you'll need to plug the power bank in to charge to reset it and return it to normal behaviour). Our fancy new USB-C power banks have a super secret low power mode - once you've plugged everything in, hold down the button until the blue LEDs light up one at a time. You'll need one that's capable of powering low powered devices - a lot of power banks will automatically shut off if really low amounts of current are being drawn. USB battery packs are probably a bit heavy for dangling round your neck, but they might be useful for powering Badger from your pocket or your bag, if you don't want to stick a battery pack to Badger itself. ![]() Once you're ready to stick the bits of Velcro down, press em down and then wait 10 minutes for the adhesive to set.If you have a on/off switch on your battery bank and want to be able to use it, make sure to position it where it's accessible.We've put our square in the middle of Badger, but if you wanted you could cut it in half and stick half at each end of the battery pack. If you're hanging Badger from a lanyard you'll want to make sure the battery pack is balanced in the middle to avoid your badge hanging lopsided.Before you start sticking things down, experiment a little bit with the positioning of the battery pack: If you have our Badger accessory kit, it will come with some Velcro for sticking the battery pack to the back of Badger. However, in our tests it keeps on truckin' down to an input voltage of 2.05V (without the LED), so if you want to use rechargeable batteries that should be fine. You'll need a battery holder with a JST-PH connector to be able to plug it in.Ģx AAA rechargeable (NiMH) batteries only put out 2.4V which is, strictly speaking, not enough for Badger. We like a 2 x AAA setup the best, as the battery pack sticks onto the back of Badger without being too heavy and unwieldy. The easiest way to supply your Badger with power is via some good old fashioned double or triple A batteries. A computer to program from (Windows, Mac or Linux/Raspberry Pi).Some sort of battery if you want to disconnect Badger from your computer and update the display on the go - we'll discuss a few options and their pros and cons!.This tutorial will show you how to plug things in, how to get to grips with the built in demo programs and how to start programming your Badger with MicroPython. We've designed it to be an friendly introduction into the myriad joys of eInk, but flexible and expandable enough to be of interest to intrepid RP2040 haxxors- lets take a look at what it can do. ![]() Badger 2040 is a low cost, RP2040-powered eInk/ePaper/EPD programmable badge.
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