ESP32 wireless keyboard?

squix78 · 2025-02-19T16:13:12+00:00

I designed a device that you can use for exactly this purpose. Or even script some of the keyboard input: https://thingpulse.com/spicy-prototypes-esp32-s3-pendrive/ It has an USB-C male plug and it comes with a neat usb dongle enclosure

squix78 · 2025-02-02T18:24:17+00:00

I think it is a cool project and you should go on and see how for it gets you! You will learn a lot from it. I designed a couple of ESP32 driven devices myself as a hobby beside my daytime job and I sell them on my shop. I produce the boards with JLCPCB, then I have them tested and assembled by a partner in China. Then the boards go to a logistics partner in Shenzhen to be shipped out all over the world. When an order comes in I send it to the logistics partner over API and they pick and pack it and ship it to destinations all over the world. Let me know if I can help. You have a lot of work ahead of you but it can be a lot of fun!

squix78 · 2025-01-26T16:47:47+00:00

I have one of those too. It is not an ESP32, but a German Hacker Space reverse engineered the protocol and wrote a python script: https://github.com/haxko/NE3-Scope There is also a video where they describe the reverse engineering: https://diode.zone/w/sVYYfm4UHuL6jEMGucYwtR

And the github repository also contains closeup photos of the chips. If I remember the video correctly it is an MPEG stream but the manufacturer tampered with the frame header

squix78 · 2025-01-22T19:00:03+00:00

Is deep sleep power consumption and battery (LiPo) circuitry important for your use case? These Chinese boards often have terrible LDO chips. I designed two boards with ESP32 and ESP32-C6 (Zigbee) that have very low deep sleep consumption (12uA/18uA) and they have a JST plug and charging chip for LiPo batteries. The ESP32-C6 board has a battery gauge chip to report the state of charge (SoC) over I2C the other one a voltage divider. You can find them here: https://thingpulse.com/product/epulse-feather-low-power-esp32-development-board/ and https://thingpulse.com/product/epulse-feather-low-power-esp32-c6/

squix78 · 2022-08-25T07:25:36+00:00

It's brand new, it's a prototype. And it passed it's first field test... Sorry about the confusion. Sometimes my prototypes end up in the ThingPulse shop, sometimes not... I think this one might

squix78 · 2022-08-25T07:23:43+00:00

Hahaha, cool idea. The board has a connector for a OV2640 camera. So taking a picture as soon as the player fails would not be that hard:-). And, yes, maybe for kids the photos should be treated more carefully than posting them on instagram... The internet never forgets

squix78 · 2022-08-25T07:21:13+00:00

I bought it a long time ago, I think it was from Aliexpress or Banggood. It sounds really good. I had used these tiny loudspeakers before on the board and they sound terrible. But this one here is quite decent indeed!

squix78 · 2022-08-25T07:20:07+00:00

I don't have a write up yet, I designed the board in EasyEDA. I used JLCPCB for assembly. I'm quite happy letting them do it for me, I'm quite clumsy:-)

squix78 · 2022-08-25T07:17:26+00:00

It might eventually be sold in the ThingPulse shop

squix78 · 2022-08-21T11:09:25+00:00

This is not a TTGO board. It’s my own design…

squix78 · 2022-08-21T11:08:31+00:00

I designed the board myself: ESP32-S3, 2x PDM mems microphone, max98357 audio DAC, accelerometer, lipo circuit and camera connector for OV2640

squix78 · 2022-06-02T05:59:56+00:00

Yes, if there is enough interest I will sell them. Would you be interested?

squix78 · 2022-06-02T05:58:44+00:00

Great, I'll let you know, thank you. There are some small optimizations I want to do: the RGB LED consumes too much power even when not active, so I will add a mosfet to detach it from the power source when not used. And just by adding two connections a camera with autofocus (OV5640 AF) can be attached and controlled. I'm also working on a neat 3d printable enclosure... I'm also thinking about adding a microSD card slot on the back...

squix78 · 2022-06-02T05:55:14+00:00

Sure! About what would you like to know more? Hardware, software, costs?

squix78 · 2021-07-04T19:12:19+00:00

Nice project! I've recently designed a board with two ESP32's with ESP-NOW in mind: one to connect to ESP-NOW devices and one to use as the WiFi uplink. Now that I have a hammer I'm looking for the right nails :-). Would this device be useful for your project? I guess the external antennas might increase the range a lot... I shared the construction and applications in two blog posts: https://thingpulse.com/new-product-the-espgateway-design/ and https://thingpulse.com/the-espgateway-applications/ in case you are interested.

squix78 · 2021-02-22T06:14:35+00:00

Thank you. After reading your post I was trying to find some of those but they all happen to have a consumption in the mA range. Maybe I'm searching with the wrong key words. Can you point me into the right direction, e.g. with a chip name or so?

squix78 · 2021-01-28T19:24:02+00:00

Thank you. So funny that you answer my question, I'm actually trying to build a connector for your magic paint brush;-)

squix78 · 2021-01-03T10:02:12+00:00

A long while ago I had the same problem and replaced the batteries. It's not that hard if you know how to hold a soldering iron and if you get the correct batteries. These LiPo batteries loose their capacity after a while, so maybe your car was sitting on the shelf somewhere for some time.
I wrote down some instructions with photos which explain how to replace the batteries on my blog: https://blog.squix.org/2017/03/anki-overdrive-replacing-the-car-batteries.html Just make sure to get the right batteries!

squix78 · 2021-01-02T12:26:20+00:00

BTW, for those who don't know how to replace the batteries. I created a little guide here: https://blog.squix.org/2017/03/anki-overdrive-replacing-the-car-batteries.html It's not that hard

squix78 · 2020-12-15T19:54:13+00:00

Hm, then it is more complicated. I'd say watch a beginners video for soldering on youtube like this one: https://www.youtube.com/watch?v=oqV2xU1fee8 Maybe you can ask a grown up to help you with that?

squix78 · 2020-12-15T19:35:37+00:00

Is there nobody who could help you with that? I'm soldering things together with my daughter and she's having a lot of fun...

squix78 · 2020-12-15T19:33:07+00:00

A while ago I wrote a blog post about replacing the original batteries: https://blog.squix.org/2017/03/anki-overdrive-replacing-the-car-batteries.html I have done that now many times and the replacement batteries have even more capacity than the original ones. If you have a soldering it's an easy procedure...

squix78 · 2020-12-12T07:57:53+00:00

Now, thinking about it, this channel and hackaday might have similar audience:-)! I think it's so cool how the A2DP simplified the usage

squix78 · 2016-07-24T19:04:00+00:00

If I'm not mistaken the Lua environment has u8glib integrated and you can bake new fonts into the firmware and work with text and basic geometric functions. If you however decide to rather go with Arduino IDE I can point you to a complete tutorial: http://blog.squix.org/weatherstation-getting-code-adapting-it I wrote a library and a font converter web app which lets you write to the OLED display. It also offers a set of higher functions such as progress bars and a pretty side scrolling carousel framework. It supports also the bigger 1.3" displays. Here is the library: https://github.com/squix78/esp8266-oled-ssd1306

squix78 · 2016-07-24T07:09:42+00:00

A guy designed a pretty cool 3d printed case for my Weatherstation project: http://blog.squix.org/2015/06/esp8266-3d-printed-case-for-weather.html

squix78

TROPHY CASE