💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors
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This has now been updated to rev. 10. There are still some images left to change.
The gerbers has been updated and sent to manufacturer but it will take some days before they update.
Make sure it says rev5 before ordering.
@sundberg84 said in 💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors:
This has now been updated to rev. 10. There are still some images left to change.
The gerbers has been updated and sent to manufacturer but it will take some days before they update.
Make sure it says rev5 before ordering.
Hello,
Thanks for creating these PCBs, it's great to have a stable base to work upon!
I want to make a daughter board using the MYSX connector but the pin choices are a little inconvenient. Like A0 is used by the battery voltage measure circuit, D2 is used by the RFM69 radio. Could you share your reasons for using these pins and whethe it is possible to use different pins?
Finally, I couldn't find instructions for adding the flash memory. That is a great addition to this board!
Cheers,
Birla -
@sundberg84 said in 💬 Easy/Newbie PCB (RFM69 HW/W edition) for MySensors:
This has now been updated to rev. 10. There are still some images left to change.
The gerbers has been updated and sent to manufacturer but it will take some days before they update.
Make sure it says rev5 before ordering.
Hello,
Thanks for creating these PCBs, it's great to have a stable base to work upon!
I want to make a daughter board using the MYSX connector but the pin choices are a little inconvenient. Like A0 is used by the battery voltage measure circuit, D2 is used by the RFM69 radio. Could you share your reasons for using these pins and whethe it is possible to use different pins?
Finally, I couldn't find instructions for adding the flash memory. That is a great addition to this board!
Cheers,
Birla@prakhar-birla Hi!
The reason is that MysX is a fixed connector. This way you can make daughterboards. If the pins would be inconsistent it would not work. You can use these pins (A0 + D2) if you dont use it for radio or battery measurment.
I havent had time to make instructions for the flash memory, but there are several others on this site which have made that. Look around for @scalz work for example on openhardware.io
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@prakhar-birla Hi!
The reason is that MysX is a fixed connector. This way you can make daughterboards. If the pins would be inconsistent it would not work. You can use these pins (A0 + D2) if you dont use it for radio or battery measurment.
I havent had time to make instructions for the flash memory, but there are several others on this site which have made that. Look around for @scalz work for example on openhardware.io
Hey @sundberg84,
Thanks for the clarification! I checked the spec docs for the MYSX connectors but they didn't mention any fixed pins, just the purpose/pin type. Anyway, for different MCU it will inevitably be different pins. On Arduino Pro Mini since there are only two external interrupts there's no escaping D2, the analog pin on the other hand in an easy fix either use a different pin for battery measurement (A6/A7 is only a via away) or a different pinout on the MYSX.
I couldn't find any instructions for the flash memory, please share a link when you can. Also is it possible to add it without the footprint on the PCB?
PS. I just ordered a set of 10 PCBs through Open Hardware :)
Cheers
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Hey @sundberg84,
Thanks for the clarification! I checked the spec docs for the MYSX connectors but they didn't mention any fixed pins, just the purpose/pin type. Anyway, for different MCU it will inevitably be different pins. On Arduino Pro Mini since there are only two external interrupts there's no escaping D2, the analog pin on the other hand in an easy fix either use a different pin for battery measurement (A6/A7 is only a via away) or a different pinout on the MYSX.
I couldn't find any instructions for the flash memory, please share a link when you can. Also is it possible to add it without the footprint on the PCB?
PS. I just ordered a set of 10 PCBs through Open Hardware :)
Cheers
@prakhar-birla - well the idea with MysX is that the pin-order is fixed so you can attach any daugherboard to it. If you start mixing the pins around you will not be able to transfer a daugherboard from one motherboard to another since they will be different. Im not sure how MysX would translate to other MCU but other have digital and analog pins as well - so it would be most possible to connect MysX to other mcu.
About the external interrupt you are right, there are 2 on the atmega328. On my Nrf24l01+ version you can use D2 as an interrupt but since the RFM69 radio uses this pin you can not on this version. D3 is your only choise and if you need more you might have to create an external circuit.
As I said, I havent had time to look over SPI flash instructions yet. I havent even tried it - this is a user request from this forum. You can search this forum for more information - like this: https://forum.mysensors.org/topic/3160/ota-flash-types-for-mysensors/
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Hi @sundberg84, on Easy/Newbie PCB rfm69 version PIN3 of MysX connector is connected to 3.3V resp. to the output from voltage regulator. When I compare with Easy/Newbie PCB nrf24l01 version, MysX PIN3 is connected to input of voltage regulator (to 5V). Is this a mistake in design of Easy/PCB rfm69 version?
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Hi @sundberg84, on Easy/Newbie PCB rfm69 version PIN3 of MysX connector is connected to 3.3V resp. to the output from voltage regulator. When I compare with Easy/Newbie PCB nrf24l01 version, MysX PIN3 is connected to input of voltage regulator (to 5V). Is this a mistake in design of Easy/PCB rfm69 version?
@ferro - Hi no - the RFM version is 3.3v only. nrf24 data pins are 5v tolerant but the rfm radio isnt so thats why.
Controller: Proxmox VM - Home Assistant
MySensors GW: Arduino Uno - W5100 Ethernet, Gw Shield Nrf24l01+ 2,4Ghz
MySensors GW: Arduino Uno - Gw Shield RFM69, 433mhz
RFLink GW - Arduino Mega + RFLink Shield, 433mhz -
@ferro - Hi no - the RFM version is 3.3v only. nrf24 data pins are 5v tolerant but the rfm radio isnt so thats why.
@sundberg84 - ok thanks, it makes sense ;). I was asking because I connected your Dimmable Led Strip daughterboard via MysX to this Easy PCB. Dimmer daughterboard is providing 5V on PIN3 (when LM2940CT voltage regulator is used on it). This would bring 5V to output of voltage regulator on Easy PCB so I disconnected PIN3 connection between dimmer daughterboard and Easy PCB. I connected PIN3 from dimmer board by wire to >3.3V power input of Easy PCB instead. Other option I'm thinking of would be not using voltage regulator on dimmer daughterboard at all but use its 12V raw voltage provided by dimmer board via MysX PIN1 (+ raw jumper on Easy PSB) and use voltage regulator (LE33) on Easy PCB only.
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@njwyborn - you are correct, thanks for noticing! Its been corrected!
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Hi, I've lipo battery pack with 4,2v maximum voltage (3,6v nominal). Can I safely use it with this board? Do I need any modifications?
@emdzej - I'm not sure but it's designed for 3.3v. you have to check the rfm radio for Max input voltage on VCC and io. I think it's 3.3v so you might have to regulate down your lipo battery to this.
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Has anybody any experience with pcbway? I ordered via the link provided here (7 weeks ago) and only received a message from paypal. I haven't gotten a tracking number and pcbway says they can't help me without an ordernumber (which I don't have).
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I ordered the 3rd of september (paypal mail says this: tirs. 03. sept. 2019 13:04:13 CEST (UTC+2)), are there any orders around that time?
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Could you add a 5 pieces option? The reason is the danish customs slaps an additional "fee" of ~24eu on imports over 12eu from china.
PCBway let's you choose 5 pieces on their website.
I tried using the gerber files but before I can upload them there is a host of settings which I don't know how to set.
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Could you add a 5 pieces option? The reason is the danish customs slaps an additional "fee" of ~24eu on imports over 12eu from china.
PCBway let's you choose 5 pieces on their website.
I tried using the gerber files but before I can upload them there is a host of settings which I don't know how to set.
@kiesel - the number is set to 10 and this is nothing I can change, sorry. You can PM me about which setting you need to set and I can help you.
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So I have made the adjustment for low power/battery mode (removed the LED, voltage regulator and sleeping most of the time).
Im having a hard time to trust my Multimeter at this point... showing 5.1uA in sleep() mode while sending shows almost 2mA! This cant be right???
At the moment im all out of boosters... I was sure I had more so I didnt order.
What I have done now is uploaded a sketch sleeping 15min, running the vcc check (since I dont have a booster) and reporting it back to me. Lets see what happens...
@sundberg84, I know this is already an old topic, but I was sure that I did read somewhere a sleep consumption of 5µA, so I'm not completely insane :-)
I've had recently a question about this in the battery powered topic : https://forum.mysensors.org/topic/4796/battery-powered-sensors/248, because my setup with a modified pro mini (no led and no power regulator) and a connected RFM69HW only, was consuming a 133µA at sleep state.
@Yveaux pointed me to the fact that in the beginning of the site article https://www.mysensors.org/build/battery, it was mentioned that a 120µA was to be expected.So how did you get this 5µ sleep consumption?
Is it the build quality of the pro mini?
I did a test with only a pro mini and the sketch of lowpowerlab and was also measuring 133µA. -
@sundberg84, I know this is already an old topic, but I was sure that I did read somewhere a sleep consumption of 5µA, so I'm not completely insane :-)
I've had recently a question about this in the battery powered topic : https://forum.mysensors.org/topic/4796/battery-powered-sensors/248, because my setup with a modified pro mini (no led and no power regulator) and a connected RFM69HW only, was consuming a 133µA at sleep state.
@Yveaux pointed me to the fact that in the beginning of the site article https://www.mysensors.org/build/battery, it was mentioned that a 120µA was to be expected.So how did you get this 5µ sleep consumption?
Is it the build quality of the pro mini?
I did a test with only a pro mini and the sketch of lowpowerlab and was also measuring 133µA.@evb - Hi, to be hones I don't even remember. I dont have any exact equipment to measure except a normal multimeter, so that can be that my reading is way off, or it was without the radio? Sorry, no documentation about this and no memory at this point. But here is the battery of my EasyPCB RFM + Dallas temp sensor. I changed the batteries 3 months ago as you see and currently is about 87%.
