emm...i don't say about Which country and which people，only told market info, i buy most form taobao and ask saler easy to get atmeal fake or different manufactured,forum most post about this fake , from alipexress? if you want get from china mouser and Digi-Key will be good choose for you,or use express transfer service with good B2c saler like szlcsc .... The third party is hard to trust.......same for me to buy amazon us or de .....

as chineses, i tell you ,the Official 328P in china market have made in china , Malaysia different manufactured ,price not same, manufactured in China only 6RMB[1dollar],Malaysia 8RMB [1.2dollar], so i think if you can run mysensors ok but only Different appearance，this is Official product.....as i know fake 328p can't run mysenors such as LGT ,but LGT different with 328P, it's only can compatible 328p some code ,but not same For example 16MHZ Built-in[also 32MHZ] ,different memory register,more hispeed adc 。and it can‘t run mysensors code , but very cheap and have better speed 、adc 、USB , it only 3RM[0.5dollar]in china ....., if only alone use, more use LGT...., if mysenors can run LGT, this will be good news ,!

WOW, nice work

few month ago ,i use tlv61220 step-up boost only for as312 is only 4ua， atmega328p ,battery cr2477 , then get 21ua ,
but now ,i give up boost , i test use ER14335 3.6v CR16340LIPO 【4.2V with diode 0.7V Step-down then 3.5V+- 】 ，same as312 get 18ua,:relaxed: ,ER14335 cost much but 1600mah ！ cr16340 750mah rechargeable best choose for me,,,,

@neverdie ASR6501 M0 with sx1262

this only 3RMB, from LGT-QQ chat group ,someone sleep and get 10UA, and LGT timer bester than atmega ..

@mfalkvidd OK， i resoved this problem with battery detect in void before ,thanks

@mfalkvidd yes, i get six nrf51822-qfahh node, last wek i found 2 nrf51 nodes low power together ,the gw can't process other node any more ,all log is Nack! Very bad with this .....

@mfalkvidd thanks , yes i use dc-dc ，emm, i mean when this nrf51 node battery go to low 2.1V ,this cause much Nack influence other sensor node, so Is there any way to solve this problem?

emm, i get nrf51 broad to run mysensor, but now i found a problem,when the battery low mcu always restart to connected mysensor gw,cause much Nack every senconds , and cause other normal sensor send data to gw Nack!
so i add

#define MY_NODE_ID 51  //Fallback NodeId
#define MY_TRANSPORT_WAIT_READY_MS  2000
#define MY_TRANSPORT_MAX_TSM_FAILURES 5
#define MY_SLEEP_TRANSPORT_RECONNECT_TIMEOUT_MS 1000
#define MY_TRANSPORT_UPLINK_CHECK_DISABLED
#define MY_PARENT_NODE_IS_STATIC
#define MY_PARENT_NODE_ID 0

but also much Nack! Fortunately other sensor work well

i don't know how to solve this problem ，did who know ? thanks!

node 60 is low battery with 2.1v down , if i use more nrf51 sensor ,when power all low ,this also cuase gw No response for other normal sensor!

@scalz
ok ,thanks , i follow your suggestion to Give it a try，，thank you ,:+1:

@Yveaux thank you ,

i create a pcb with bh1750fvi chip,

i use multimeter measure bh1750fvi v+ pin and gnd ,when power on battery from 2.9v drop 2.1v ,and 3-5 seconds ,up to 2.9v, use a new battery NANFU cr2032， also 3.1 drop to 2.7v，

sleep all is ok , when sleep 7.3ua

but, when down 2.4v bh1750 no work....so。。。i don't how to do,

@rozpruwacz yes,but new battery also drop 0.4-0.5v like this ,:disappointed_relieved: , this is new battery offer by Two weeks ago.， use it on si7021 node，work well, so 。。。。

i create a lightsensor sketch with bh1750fvi, i found when power with CR2032, voltage from 2.9v drop to 2.4 or lower, but bh1750fvi required 2.4V, so sensor node can't continue , but later 3-5 seconds voltage recovery to 2.9v

ATMEGA328P-U-TH+ nrf24l01-smd with Customized PCB, Are there any good suggestions for solving this problem? thanks!

@bearwithbeard
YEAH，because difficulty get dr5032FB in my region，more 20HZ with 3v like DRV5032AJD,DRV5032ZEDBZR ,DRV5032FA Available ，maybe other similar low power and low voltage chips ?

well,,i buy some hall effect sensor as EM-1781-T5,HAL2481L,ES248L, work well,but battery cost too much for me ,the EM-1781-T5 consume least,atmega328p 1MHZ with sleep nothing sensors 7.8ua，work with EM1781 sleep 16ua，when Magnetic near，cost 22ua, .......so ....i think Although it provides a more accurate and wider range of sensing, it consumes much more than a reed.

looks good ,
but sot23 maybe needs to be a specific direction. or TO-92s?

TSM:READY:UPL FAIL,STATP

I use nrf24l01+ SMD with 8266 mqttgateway and mini pro with nrf24l01+sdm for bh1750
when i connect mini pro and 8266 same power supply ， no problem !

but when nimi pro use another Power supply , then

TSM:READY:UPL FAIL,STATP

same problem mysensor 2.0 2.3 2.2 all the same !!

somebody now why? thanks.....