Earlier quoted context omitted.
> (~10.7cm) Maybe also X cm x Y cm
Looks confusing imo. Exact dimensions are mentioned here though https://docs.paperd.ink/docs/hardware/hardware/#dimensions
Also nice to know: 400 x 300 px found on the block diagram.
Show HN: Paperd.ink – an open-source e-paper development board
31–40 of 69 posts
Re: Show HN: Paperd.ink – an open-source e-paper development board
#32Looks like a nice case. How does it compare to the Inkplate? They offer colour and touchscreen versions with bigger screens for barely any more money (though you pay extra for a case).
Re: Show HN: Paperd.ink – an open-source e-paper development board
#33> paperd.ink has a 4.2” e-paper display If your target market is the whole world, please also provide dimensions using the metric system. For most of the world, inches don't mean anything. 4.2” is approx. 10.7 cm.
I'm a staunch metric supporter, but to be fair I have never encountered a country that measures screens as anything other than inches.
Probably because diagonal is the only supplied value. That is mostly used for comparing screen sizes and little else. At least in my metric world.
You could probably measure screen sizes in fractions of blue whales and it would work out exactly the same for most folks.
Re: Show HN: Paperd.ink – an open-source e-paper development board
#34> failing to achieve our crowdfunding target goal (we had ~40%)
Fwiw what I've heard regarding crowdfunding isn't so much that you put your product on a crowdfunding website to raise money, as much as you already have a marketing plan with enough people on your email lists etc who're willing to pay money, and once the Kickstarter/indigogo is live, these people come to the site. That's also how apparently those "2000% funded in 2 days!" stuff happens, which isn't surprising if you look at how shady some of them look.
Re: Show HN: Paperd.ink – an open-source e-paper development board
#35Sorry for nitpicking, but why MicroUSB instead of USB-C in new projects?
Anecdotally, I'll note that some USB-C stuff is rather power-hungry, compared to MicroUSB gadgets. I have a portable solar panel that easily charges my Kindle over MicroUSB, but struggles to make headway with many of my USB-C devices. I don't know if this is due to USB-C itself consuming power somehow, or if the higher amount of power that USB-C can supply means that USB-C devices put less effort into keeping power requirements low.
Re: Show HN: Paperd.ink – an open-source e-paper development board
#36It looks like a lovely project - and congratulations on the grant! How much did they cost backers to buy? It's such a shame that eInk screens are so expensive.
Thanks! We're selling the dev board for 89USD along with a free 3d printed enclosure and free shipping. Edit: typos
That's a very fair price, just ordered one :)
Re: Show HN: Paperd.ink – an open-source e-paper development board
#37(OP here) Update: We sold out the first batch of paperd.ink! Thanks to each one of our supporters, we managed to pull this off because of you. As next step, we would love to talk with the users once they have paperd.ink in their hands. And for those who missed out, you can drop your emails or keep a track of our social media to be updated. Thanks again!
PS: I will reply to the pending comments shortly. Sorry things have been busy here (our website crashed twice in the last 5 hours).
Re: Show HN: Paperd.ink – an open-source e-paper development board
#38>powered by an ESP32 module Immediate questions raised include "Which one?" and "Why aren't you telling me which one in the first place?!". Particularly so for a product that is supposed to be open source. There's major differences between ESP32 modules. E.g. only some of them are on RISC-V CPUs. The others use a CPU which is less common and less well-supported by open toolchains.
Seems to be ESP-S3, ESP32-D0WDQ6 specifically.
Re: Show HN: Paperd.ink – an open-source e-paper development board
#39> failing to achieve our crowdfunding target goal (we had ~40%) Fwiw what I've heard regarding crowdfunding isn't so much that you put your product on a crowdfunding website to raise money, as much as you already have a marketing plan with enough people on your email lists etc who're willing to pay money, and once the Kickstarter/indigogo is live, these people come to the site. That's also how apparently those "2000%…
That seems to be one strategy. For us, we had about 500 people who filled our very first user research form and we kept a target of minimum 300 orders to be able to manufacture the units and at least break even. Turns out, not even half of the 500 folks read our crowdfunding launch email. We didn't have any money to spend on paid promotion. So we then did everything, from posting on relevant social media channels to trying to get articles written about us by blogs to cold emailing people who I thought would like the product - and one of them did who offered us the FOSSUnited grant! I guess whatever works best for your product/campaign.