Good work! My first 240x240 display was a Palm Treo 750 and 320x240 apps were unusable because 80 pixels were out of sight, haha
Add your contacts, social links and donation button
Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
131–136 of 136 posts
Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
#132Earlier quoted context omitted.
Look into the low-power mode of whatever microcontroller you're using... I did an AT-Tiny85 project, and it burned through the battery. I then switched to low power for a while, and it draws micro-amps (!) when in low-power mode, so the battery would have lasted hundreds of times longer. Oh... umm... the display, yeah. Maybe have an on-button for the display to power it up only when you want it?
As long as the microcontroller has a sleep mode, you can use a relay (for-real or solid-state) to toggle the power for the display.
Great idea, thanks!
Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
#133There is a weird spot in the display market that is painful as a embedded developer: Displays under 400x240 pixels, usually the gfx buffer can be managed in the ram of the MCU. Nothing fancy needed, can get decent framerate on SPI bus running at 16 MHz. Anything above this range gets super ugly: no good displays exist and if they do, they're expensive or outdated (800x480 resolution is basically impossible to obtain)…
Does this help? https://www.buydisplay.com/5-inch-tft-lcd-module-800x480-dis...
Have you used it?
Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
#134I like this Pi, but the fact that they didn't put full-sized HDMI ports on it pisses me off to an unreasonable degree.
Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
#135Earlier quoted context omitted.
You can get those on banggood and aliexpress for incredibly cheap as well. You can look into nordic stuff as well for bluetooth related microboards to develop on. If you're just starting out I can recommend looking at m5 which has nice little kits to get started. It's a bit pricier though. https://m5stack.com
The M5 kits caught my eye at MicroCenter a few weeks back when I was doing some holiday shopping, I couldn't tell if they were just toys or actually useful. Any pointers on them?
M5Stack is an AWS partner for a new “AWS IoT EduKit” so I imagine you will be seeing more projects using them in IoT roles. The getting started guide has some examples.
https://aws.amazon.com/about-aws/whats-new/2020/12/introduci...
Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display
#136Earlier quoted context omitted.
You need to do that 7 days a week? Did you do that before the pandemic as well? I assume you'd go out and meet some people? Sports? Other out-of-house activities, that's all time you can use as "you" time now.
HN comment Two small kids here, I’ll try to explain my experience. First off, there was very little time for socializing before the pandemic. One evening a week to grab dinner with a friend was the gold standard and achieved at the cost of putting more childcare on my partner. My partner also got an evening a week for friends, so I’d have extra kid duty that day. The pandemic has made life harder for me and my family…
Ha! It says “HN Comment” at the top because that was the title of the Notes app entry where I wrote it! I find myself making lots of little mistakes like that these days.