Hardware

@tbowmo said in Laundry sensors: Just need to make something durable so that the sensor isn't destroyed if someone decides to overfill the basket, and force the drawer in. You just need to put it recessed inside an enclosure, it doesn't need a very wide aperture. For using above the table except if you have a low ceiling it won't do the job properly, in theory it's up to 2m but with daylight I couldn't detect non-reflective things further than 1m. If you have a relatively dark room you can measure further but it must be dark with a very reflective surface to really reach the claimed 2m. There's a VL53L1X with twice the range that is more expensive (close to 10$ with shipping it seems) and that will likely use way more power. I've never tried it, but I think I will soon as I really want to buy one now :D

@ashokgowtham No, there is no available parameters like RSSI in NRF24. I've just done repeating tests like opening/closing a switch with ack enable in the same conditions for the different throughputs. And after three weeks of use, i can confirm that I've no errors at all at 2Mbps. As i said this throughput improve transmissions with a lot of wifi interferences around.

Radar doesn't go through metal, so aluminium foil should already do the trick

Switch to tantalum if you have space, much better for battery powered as a decoupling cap, low leakage. Choose a cap with voltage 3x to 4x of input voltage.

I have now been running the gateway for more than half a year, and unfortunately the gateway runs regularly (about once every 2 weeks), so I am going to replace the gateway for a W5100 ethernet adapter. I used it in a second gateway, and this gateway is stable, I haven't had any crashes in about 4 months.

@ayo I have this problem too, I can't get the radio modules work, the modules are nRF24L01 and I have tested with two arduino nano and two Arduino mega2560, but there is no result. The transmitter and receiver can not contact each other.

A really impressive project based with DIN interface. Do you also integrate in DIN format the system to put a mysensors controller as well such as a RPi , etc... ?

@yveaux In my outdoor tempsensor everything was working for a while. And to avoid any problems with the initial setup I put a Nano on a breadboard with only the nrf24 connected. The first setup could have had some issues that I don’t know of, but strange that my test setup have the same problems? That should have avoided any hidden problems to test everything again in a new setup. And Arduino runs on 5V and nrf24 on 3.3V. Is there any other way to check the function of a nrf24? Maybe some other sketch that is not mysensor but able to verify the nrf24 works. I need to try to narrow down the problem because it seems strange that all 4 are broken.

@sweetpants :+1: Thanks for the positive feedback.

https://forum.mysensors.org/topic/9305/mysensors-smart-watch might be of interest

@neverdie ASR6501 M0 with sx1262

IIrc, in the USA, the frequency hopping would make the 27dbm legal. Otherwise not. In answer to your question, the higher priced module above claims to do fec. Although I think it's normally done at the phy layer, which they aren't . Maybe if you turned off crc and did promiscuous Rx....

thank you guys for explaining this, some times asking question is easy then googling around and finding contradicting answers. :+1:

@alowhum "WRITE LINE The minimum amount of data that can be written to the panel is one line. The actual number of data bytes written depends on the horizontal resolution of the panel itself. Therefore, a panel with a resolution of 400 × 240 will require a 400/8 = 50 bytes of data (plus overhead)" https://www.sharpsma.com/documents/1468207/1485747/Memory+LCD+Theory%2C+Programming%2C+and+Interfaces Remembering just 50 bytes for a 400 x 240 display doesn't sound particularly bad to me. I guess in the worst case, if you didn't want that burden in your MCU, you could dedicate a cheap, tiny slave MCU to mange it for you. For instance, maybe the main MCU just does println's, and the slave MCU handles the scrolling. I doubt it would be necessary, but one could fallback to that if push ever came to shove.

@idanronen yes, good point, but as @Anticimex mentioned, signing has to solve this issue.