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We made an open source ESP8266 dev board for makers
61–70 of 145 posts
Re: We made an open source ESP8266 dev board for makers
#62Earlier quoted context omitted.
Test and measurement supersedes intentional emission. If it were the other way no development boards would get sold, especially necessary things like low volume engineering samples. Should a one-off need certification before it can be transferred to the company that contracted the work to build it? No. If you have never sought certification know that it is quite expensive. What seems to matter the most is if anyone a…
If it’s sold as a kit(eg. Devboard) or battery powered it doesn’t need to be certified. You also can get pre-certified boards, the wroom-02 being the pre-certified esp8266.
I've seen certified development boards also, but what most don't realize is you can't combine certified parts to make a certified product. So depending on your product there is literally no benefit to getting it certified.
There are things that are battery powered that need to be certified and things that are not kits that don't need to be, though, so I'm not sure I can agree with that wording.
Re: We made an open source ESP8266 dev board for makers
#63Earlier quoted context omitted.
A digital device is defined as: > (k) Digital device. (Previously defined as a computing device). An unintentional radiator (device or system) that generates and uses timing signals or pulses at a rate in excess of 9,000 pulses (cycles) per second and uses digital techniques; ... https://www.govinfo.gov/content/pkg/CFR-2009-title47-vol1/pd... This has Wi-Fi, so it's an intentional radiator, so it's not a digital devi…
Test and measurement supersedes intentional emission. If it were the other way no development boards would get sold, especially necessary things like low volume engineering samples. Should a one-off need certification before it can be transferred to the company that contracted the work to build it? No. If you have never sought certification know that it is quite expensive. What seems to matter the most is if anyone a…
> Test and measurement supersedes intentional emission.
On what authority are you claiming this? The language LeifCarrotson quoted refers only to digital devices, and the language I quoted above says plainly that a digital device must be an unintentional radiator.
To be clear, I believe selling their dev board is fine, but it's fine in the same way that driving 60 mph in a 55 zone is fine. Anyone selling an intentional radiator dev board that could reasonably be considered to be a complete device in itself is taking a small risk of FCC action, especially if (as here) they're pushing the limits of "dev board". Note that the Raspberry Pi developers do seem to get certs.
https://www.raspberrypi.org/documentation/hardware/raspberry...
Re: We made an open source ESP8266 dev board for makers
#64Earlier quoted context omitted.
If it’s sold as a kit(eg. Devboard) or battery powered it doesn’t need to be certified. You also can get pre-certified boards, the wroom-02 being the pre-certified esp8266.
I've seen certified development boards also, but what most don't realize is you can't combine certified parts to make a certified product. So depending on your product there is literally no benefit to getting it certified. There are things that are battery powered that need to be certified and things that are not kits that don't need to be, though, so I'm not sure I can agree with that wording.
I think battery-powered unintentional radiators can sometimes avoid testing, but battery-powered intentional radiators definitely don't. The statement about kits is also wrong, per pdabbadabba's comment below.
An intentional radiator module can get a module certification. In that case the final system still needs verification (the same kind of testing that an unintentional radiator gets), but doesn't need certification. When you see a label on the outer device that says "Contains FCC ID XXX-XXXX", that's the module's ID.
https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm...
Re: We made an open source ESP8266 dev board for makers
#65I have an interest in electronics and would call myself a "maker" (well, I have a growing box filled with various arduinos and microcontrollers)... but after scouring the repo and the website, I can't figure out what this is, or what I could do with it! What is an "ESP8266 board"? Is that something that is so common it doesn't need explaining? Of course I will google it [and probably buy one], but just pointing out t…
Esp8266 is a microcontroller which is incredibly popular in the maker/hacker movement for it's low cost and wifi integration. You can add a relay to this microcontroller and put it on your wifi network and use it to switch appliances on/off from the internet quite easily. If you read hackaday, you'll run into esp8266 projects regularly. It's a bit harder to get started with than your average arduino project. If you w…
that's a helpful info for newbies. thanks for sharing
Re: We made an open source ESP8266 dev board for makers
#66Pretty rad! I could see lots of applications. Available on amazon you say? 19.99 you say? https://www.amazon.com/dp/B08GY2GTW5?ref=myi_title_dp I'm curious about availability. Are they ready to ship? Awaiting preorders? EDIT: Oh I see 18 in stock. Probably remains of a small run to gauge interest. I hope it takes off. I'm going to make it 17. :-)
we have more stock, just waiting to transfer to Amazon
Any plans to make it available in Canada?
Re: We made an open source ESP8266 dev board for makers
#67Who has used RS232 voltage for serial in the last 10 years? I'd rather a few MOSFETs to cut the power to everything for lower power. I guess there is a specific market for this and it is not me. I have at least 20 of Esp8266 and esp32 boards around the house. A bit of fun to design and produce though. I would not bother with the ESP8266 anymore considering the marginal cost of the esp32 and it is a much better device…
Isn't the esp8266 much lower power than the esp32?
No the ESP32 uses less power. In deep sleep it uses about a quarter of the current. It also has an extra low power processor (ULP) core than can run in a sleep state and do IO without even waking up the Tensalica cores. The ESP32-S2 actually has a Risk-V core that runs as a ULP. As I said, it's better in every way.
Re: We made an open source ESP8266 dev board for makers
#68Just curious not really familiar with electronics but what can i build using this
I combined an ESP8266 with a 4x20 LCD display.
As the device has onboard WiFi I can poll a remote site to get data and display it, updating every few minutes. I use that to show the next departure-times at the tram-stop round the corner from my house.
Sure I could use an app, or even walk there and wait, but it's nice to know when to leave - especially in winter-time!
Re: We made an open source ESP8266 dev board for makers
#69I built something like this but more special-purpose. It just switches a USB-A power source on/off. I wanted it to control my 5-volt fish-tank lights. I didn't want to use a 120VAC smart switch for each light because I prefer to use a single USB hub to power them all, and a bonus feature was being able to PWM the lights so the fish aren't freaked out when the lights suddenly turn on 100% in the morning. I ordered PCB…
I made lights using ws2812b leds and simulated sunrise, sunset, and a dim blue throughout the night. I used ws2812b leds, wemos d1, and a level translator since the d1 has 3.3v gpios but ws2812b technically requires a 5v signal.
That sounds awesome, can you do a write-up about it please?
Re: We made an open source ESP8266 dev board for makers
#70Just curious not really familiar with electronics but what can i build using this
Given all the air quality issues in CA right now, I've been planning to put together an air quality + temp + humidity sensor that I can run off a battery and connect to my wifi. I already bought the sensors which I have connected to a Raspberry Pi just to play around with them, but of course a RPi won't last long on a battery. I really want something I can just toss in the corner of a room and easily move around.
I've mostly been looking at the ESP32, though (newer, also has bluetooth and 2 cores, and is lower power), and some of the ARM Cortex-M-based microcontrollers.